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I need a mobile app that helps field technicians working on biomass boilers get instant, reliable answers to technical questions and an automated diagnostic of common faults. The goal is for someone standing in front of the boiler—often with limited connectivity—to open the app, select the symptom or scan sensor data, and immediately receive a clear cause-and-solution path they can act on. Core requirement • Build an automated diagnostics tool tailored to the main biomass boiler models in the market, covering ignition failures, feed-system jams, combustion efficiency drops, sensor misreads and similar issues. The logic should combine decision-tree questioning with rule-based or ML-driven analysis so the app can suggest the most probable fix and the parts or adjustments needed. Key expectations • Native or cross-platform mobile development, whatever lets the technician work offline and sync later when a signal is available. • Friendly interface with large touch targets, dark-site readable colours, and easy symptom navigation. • Admin console (web or in-app) where I can update fault trees, add boiler models, and push new troubleshooting data without redeploying the whole build. • Lightweight data logging so we can track which faults occur most often and refine the diagnostic engine. Nice to have (future phase, keep architecture flexible): interactive troubleshooting guides and a live chat hand-off to human experts if the automated flow cannot resolve the issue. Deliverable for this project 1. Fully functional APK/IPA (or TestFlight build) demonstrating the automated diagnostic journey for at least two biomass boiler models. 2. Source code with clear documentation, build/run instructions and comments on the diagnostic logic. 3. Brief deployment guide so I can publish updates myself. If you have previous experience with field-service apps, IoT data, or rule-based/ML troubleshooting engines, mention it up front—those projects align perfectly with what I want here.
Project ID: 40586261
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156 freelancers are bidding on average €719 EUR for this job

Hi there, We understand you need a mobile app for field technicians to diagnose biomass boiler issues instantly, with a focus on reliability and offline functionality. Our team at Webbook Studio has experience with mobile development, including a music voting mobile app built with React Native and a furniture shopping app developed with Flutter. We've also worked with rule-based systems and can apply similar logic to create an automated diagnostics tool for biomass boilers. We'll deliver a fully functional mobile app with a user-friendly interface, allowing technicians to select symptoms or scan sensor data for immediate troubleshooting. One question: Have you considered any specific ML algorithms or data analysis tools for the diagnostic engine, or would you like us to suggest options based on our experience? Feel free to message us to discuss the details! — Webbook Studio
€350 EUR in 10 days
9.2
9.2

Hello , Nice to meet you! I will design and develop mobile application with web admin panel according to your requirement , ping me on chat so we can discuss this more. I am expert and 9 years experienced Android /iPhone app developer with backend work that you are looking for. I will provide you perfect product as you want so you would be happy with it. I am always ready to discuss about your project in detail as well as start from right now. The following are my services that i provide :- 1. Daily or Weekly update. 2. Clean and Robust code. 3. Responsible for communication for more than 15 to 20 hours each day. 4. Free Bug-Fix support for 1 year after completion. 5. Source code delivery. You can have a look at my profile by this link : https://www.freelancer.com/u/shyamvijaywargiy Let's contact me to discuss further details with me. Thanks Shyam
€250 EUR in 25 days
9.0
9.0

Good to see this project, I will deliver a cross-platform app (Flutter) with full offline diagnostic capability for at least two biomass boiler models, covering ignition failures, feed jams, and combustion efficiency drops. The diagnostic engine will combine decision-tree questioning with rule-based analysis, and the architecture will support ML expansion later. A web admin console will let you update fault trees and add boiler models without redeploying. On a similar field-service build, caching the entire diagnostic logic locally cut average resolution time significantly for technicians in low-connectivity environments. Questions: 1) Which two boiler models should launch first, and do you have existing fault documentation for them? Send me a message and we can go over the details. Best regards, Kamran
€282 EUR in 13 days
8.6
8.6

Hi — Elias here from Miami. I see you're looking to develop a mobile app for technicians working with biomass boilers, aiming for instant and reliable diagnostics. A common issue in systems like this is ensuring the app can manage various data inputs while maintaining reliability. The workflows for technicians can be complex, requiring seamless user roles and real-time updates to provide the right information. My approach would be to build a robust backend that supports real-time data processing and integrates smoothly with existing systems. This will enhance scalability and maintainability, allowing for future updates without major overhauls. I've worked on similar diagnostic tools, focusing on intuitive interfaces and reliable data handling. This experience helps me identify potential challenges early in the development cycle. A few questions to better understand the scope: Q1 – What specific data sources will the app need to integrate with for diagnostics? Q2 – Are there specific user roles or permissions required for different types of technicians? Q3 – How do you envision offline functionality for technicians working in remote areas? Happy to discuss the details and suggest the best technical approach. Looking forward to hearing from you.
€500 EUR in 5 days
8.6
8.6

I propose a tailored mobile app for biomass boiler technicians, utilizing decision-tree questioning and ML-driven analysis for swift issue resolution. The solution features offline functionality, seamless sync capabilities, and an intuitive interface. Admin console allows easy updates, with scalability for future enhancements. Deliverables include a diagnostic app, source code, and deployment guide. Let's collaborate for lasting support in field service tech.
€675 EUR in 5 days
8.8
8.8

Hello, Your project for a mobile app providing instant, reliable diagnostics for biomass boiler technicians in the field, even with limited connectivity, is compelling. I excel at building offline-first solutions that leverage rule-based or ML-driven analysis to offer clear, actionable cause-and-solution paths from symptoms or sensor data. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas
€458 EUR in 7 days
8.4
8.4

Hello, With a wealth of experience in mobile app development and a profound comprehension of PHP, I am proficient at creating feature-rich, intuitive, and efficient apps that work well offline, a critical requirement for your biomass boiler diagnostic app. My expertise empowers me to deliver native or cross-platform functionality, aligning perfectly with your project needs. I understand the limitations faced by field technicians like limited connectivity and low lighting conditions, and thus, will design an interface explicitly tailored for dark-site visibility with large touch targets aiding easy navigation to even improve the workflow in challenging scenarios. Additionally, my proficiency in Android and Mobile App Development guarantees that the administration console you need, particularly for updating fault trees and troubleshooting data, is seamless, user-friendly, and absolutely achievable placing you in full control of app updates without any hassle. With deep knowledge in data logging, my solutions will not only deliver on all core requirements but also provide you with valuable insights through lightweight data tracking on common faults occurring enabling continuous optimization of the diagnostic engine. Though initially a nice-to-have feature, I strongly believe future-proofing is essential; thus I am more than ready to take up and incorporate interactive troubleshooting guides as well as a live chat system should human inte Thanks!
€700 EUR in 8 days
8.6
8.6

Hello, I can help with your "Biomass Boiler Diagnostic App" project. I develop clean, maintainable PHP backends — core PHP and Laravel/Symfony, MySQL schema design, and well-structured REST APIs. For work involving php, mobile app development, iphone, android, mobile app testing, mobile development, technical documentation, mobile app audit, I pay close attention to validation, security, and readable code, delivering in small, testable milestones. You'll get clean commits and clear documentation. Could we discuss the specifics before I firm up the timeline? ⭐ 5.0/5 from a recent client: "They delivered the project well ahead of the committed delivery date. It was an experienced team, and I would be happy to hire them again." Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
€600 EUR in 14 days
8.0
8.0

Hi, Offline-first is the part that decides the architecture here. The fault trees, boiler models and troubleshooting data all need to live on the device in a local store, with a sync layer that reconciles logged faults when a signal returns. That means the admin console writes to a versioned dataset the app pulls and caches, so you push new models without a rebuild. One question: do you already have the fault logic for the first two boiler models written down somewhere, or do we build the decision trees with you from technician notes? I haven't shipped a biomass tool, but in 15 years of full-stack work, as CTO I've led 50+ products, including offline-capable mobile apps with sync. Since we're new to each other, we can scope the first milestone around the two-model diagnostic build so you release on delivered work. Which two models come first? Adil
€275 EUR in 7 days
7.6
7.6

⭐⭐⭐⭐⭐ Create a Mobile App for Biomass Boiler Diagnostics ❇️ Hi My Friend, I hope you're doing well. I reviewed your project needs and see you're looking for a mobile app for biomass boiler diagnostics. You have no need to look any further as Zohaib is here to help you! My team has completed over 50 similar projects in mobile app development. I will build a user-friendly app that provides instant answers and diagnostics for field technicians, even with limited connectivity. ➡️ Why Me? I can easily create your mobile app as I have 5 years of experience in mobile app development, focusing on offline functionality, user interface design, and diagnostic tools. My expertise includes working with decision trees, rule-based logic, and machine learning. I also have a strong grip on other relevant technologies, ensuring your project is in safe hands. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. Looking forward to connecting with you! ➡️ Skills & Experience: ✅ Mobile App Development ✅ Cross-Platform Solutions ✅ User Interface Design ✅ Offline Functionality ✅ Diagnostic Tool Creation ✅ Decision Tree Logic ✅ Machine Learning Integration ✅ Data Logging ✅ Admin Console Development ✅ Technical Documentation ✅ Problem-Solving Skills ✅ Field-Service Experience Waiting for your response! Best Regards, Zohaib
€350 EUR in 2 days
7.8
7.8

Hi! Went through this carefully — solid project, and the offline-first + admin-managed fault trees combination is exactly the kind of thing we enjoy building. A few things worth clarifying before quoting: How is the diagnostic data structured today — do you have existing fault trees, manuals, or sensor specs we'd import, or does that logic need to be built from scratch? And on the "ML-driven" side: are you thinking true ML models trained on fault data, or would smart rule-based logic with weighted probabilities cover what you need for now? (The latter is faster to ship and easier to maintain in the field — worth discussing.) For the app itself we'd go React Native or Flutter for cross-platform with solid offline support, SQLite locally for the diagnostic engine, and sync to a backend when connectivity returns. The admin console would be a lightweight web panel so you can push fault tree updates without touching the app build — that part is straightforward to architect cleanly from day one. One honest note on budget: 98 bids averaging 749 EUR tells you the market agrees this sits at the top of your range or beyond, especially with the offline engine, two boiler models, admin console and full docs. Happy to scope a focused MVP that fits the budget and leaves room to grow. What's the timeline pressure, and how much of the diagnostic content is ready to hand over? Gustavo & the DoTheCode team
€750 EUR in 15 days
7.8
7.8

Hello!, This is James from Hollywood... I read your Biomass Boiler Diagnostic App description carefully, and I understand the main goal is to give field technicians instant, reliable diagnostics on-site so they can troubleshoot faster with less guesswork. That’s the kind of practical app I like building. I’ve got around 15 years of experience with PHP, mobile development, iPhone, Android, testing, and technical documentation, so I can handle both the app logic and the real-world usability side. I pay close attention to details others usually miss, because in a technician app, accuracy and speed matter more than flashy features. My approach would be: 1. Clarify the diagnostic flow and key boiler fault scenarios 2. Build the core mobile UX for quick field use 3. Connect backend logic/API for reliable data handling 4. Test on real devices and edge cases 5. Deliver clean documentation so it’s easy to maintain Could you please clarify the following questions to help me better understand the project? 1. What specific boiler diagnostics should the app support first, and do you already have the fault logic or manuals? 2. Should technicians work fully offline in the field, or is constant connectivity assumed? 3. Do you want this as a native app, cross-platform app, or is there already a PHP backend to integrate with? If helpful, I can share relevant work examples from similar field-service and mobile systems I’ve built.
€650 EUR in 6 days
6.8
6.8

Hello! As per your project post, you are looking to build an Biomass Boiler Diagnostic App that helps biomass boiler technicians quickly identify faults, receive accurate troubleshooting guidance, and work efficiently even in low or no connectivity environments. The application will combine structured diagnostic workflows, offline capabilities, and an easy to manage knowledge base to reduce downtime and improve field service operations. My focus will be on delivering a cross platform mobile application with an intelligent diagnostic engine, decision tree and rule based fault analysis, optional ML driven recommendations, offline first architecture with automatic synchronization, boiler model management, sensor data support, technician friendly UI, fault history logging, searchable knowledge base, and an admin dashboard for managing diagnostic rules, boiler models, and troubleshooting content without requiring application updates. I specialize in Flutter, React Native, Python, Node.js, AI powered diagnostic systems, offline mobile applications, REST APIs, PostgreSQL, cloud architecture, and enterprise field service solutions. My focus will be on building a scalable and maintainable platform that delivers fast, reliable diagnostics. I would be happy to discuss your requirements and help build a robust diagnostic platform that enables technicians to troubleshoot biomass boilers quickly and accurately in the field. Best regards, Nikita Gupta
€500 EUR in 28 days
7.0
7.0

Hi I’ll design a clean, intuitive diagnostic app interface for your biomass boiler system with responsive layouts, clear data visualization, and a user-friendly experience tailored for efficient troubleshooting. Tejal
€500 EUR in 8 days
6.9
6.9

Hi I understand you are looking for a hands-on Biomass Boiler Diagnostic app that works reliably on both iPhone and Android, with thorough mobile testing and clear technical documentation, so your diagnostics are practical in the real world rather than theory-only. I’m an AI and web developer who builds user-focused applications and connects systems with clean, maintainable workflows. For mobile diagnostics work, my approach is to turn requirements into repeatable checks, validate the full user journey on both platforms, and provide an audit-friendly handoff with what to maintain and why. For your project, I would start by auditing the existing app behavior (or defining the expected flow if it’s not built yet), then map each diagnostic screen/state to specific inputs and outputs. Next I would implement/adjust the mobile logic in PHP-backed services as needed, run focused device testing on iOS and Android to catch edge cases, and finish with technical documentation and an app audit summary so the diagnostic process is transparent and maintainable. Best, Justin
€500 EUR in 7 days
6.5
6.5

Your offline-first requirement is the critical constraint. If the diagnostic engine relies on a live API or cloud ML inference, technicians lose functionality the moment they step into a basement with no signal. That kills adoption. Quick questions - are you planning to pre-load all fault-tree logic into the app bundle, or will you need periodic background syncs to pull updated diagnostic rules? And do the boilers expose sensor data via Bluetooth/serial, or will technicians manually input readings? Here is the architectural approach: - MOBILE APP DEVELOPMENT: Build a React Native app with SQLite for local fault-tree storage and Redux-Offline for sync queue management, ensuring full diagnostics work without connectivity. - PHP: Develop a Laravel admin API with versioned diagnostic rule endpoints so you can push updates to the fault trees without forcing app redeployment. - MOBILE APP TESTING: Implement automated UI tests using Detox to validate symptom flows across Android/iOS and simulate offline scenarios before field deployment. I have built similar field-service tools for HVAC diagnostics and industrial equipment monitoring where offline reliability was non-negotiable. Let's schedule a 20-minute technical call to map your boiler models to the decision-tree structure before I scope the build.
€450 EUR in 21 days
6.7
6.7

Leveraging my extensive experience in web and mobile app development, I am confident I can create the Biomass Boiler Diagnostic App you are seeking. With a strong emphasis on delivering reliable, user-friendly, and high-performing solutions, I am certain I can meet your core requirements and exceed your key expectations. Having worked on similar field-service apps, I'm well-versed in building native or cross-platform applications that work offline yet seamlessly sync when necessary. Additionally, my proficient skills in PHP align perfectly with your need for an admin console which allows easy troubleshooting data updates without redeploying the whole build. Moreover, my familiarity with IoT data and rule-based/ML troubleshooting engines provide me with a unique perspective to build an interactive troubleshooting guide and integrate possible live chat functionalities in future phases. I prioritize clear communication, timely delivery, and long-term client relationships --consider this as a sign of my commitment to our project's success. With me, it's not just about building the app, but about creating a tested, well-documented solution that you can easily maintain. Chat with me now to discuss further!
€250 EUR in 10 days
6.6
6.6

Hello, Should the diagnostic logic start as rule-based decision trees for this phase, with ML layered in later once you've got real fault data logged? Love this field-ready diagnostic concept! I'd build it offline-first from the ground up, since that's the real make-or-break for a technician standing next to a boiler with no signal. One thing I'll plan for carefully is keeping the fault-tree engine flexible enough that you can add new boiler models through the admin console without ever needing a redeploy. I've worked on field-service and rule-based troubleshooting apps before, happy to share examples in chat. Happy to hop on a quick call or chat to walk through the fault-tree structure for your first two boiler models.
€250 EUR in 4 days
6.0
6.0

I’ve built field-service apps that work offline and sync data seamlessly when connectivity returns, so I know how important this is for techs working in tough environments like boiler rooms. Combining decision trees with rule-based and ML logic for diagnostics is doable—one project I did helped onsite engineers quickly isolate machine faults using sensor input and symptom selection, reducing downtime by 30%. For your app, starting with two biomass boiler models lets us focus on solid, actionable diagnostics covering ignition, feed-system, combustion, and sensors. I suggest a clean UI with large buttons and dark-readable colors to keep things clear onsite. The admin console can be a lightweight web app for updating fault trees and models without forcing app redeployment, which matches your need for agility. Two quick questions: 1. Do you have existing fault trees or sensor data samples to build initial logic from? 2. Would you prefer native builds for optimal offline use, or cross-platform for faster iterations? I’ll deliver a working APK/IPA with the core diagnostic flows, full source with documentation, and a deployment guide so you can keep updates moving after launch. Ready to get this moving and streamline your field techs’ troubleshooting fast.
€250 EUR in 7 days
6.0
6.0

The offline-first part is what will make or break this app. If a technician loses signal in a plant room halfway through a diagnostic, the decision tree, fault logic, and any scanned sensor data still need to work locally and sync cleanly once a connection returns. I'd build the diagnostic engine so the troubleshooting rules are separated from the mobile app itself, allowing you to add new boiler models and update fault trees through the admin console without publishing a new APK or IPA every time. For sensor-based diagnostics, I'd keep the rule evaluation on-device so responses remain immediate, even with limited connectivity. The data logging can be lightweight, recording fault patterns for later analysis without slowing the technician's workflow. I've also worked on PHP-based backends alongside mobile applications, so keeping the diagnostic data and admin tools maintainable fits well with this project. One question: how will sensor data be provided—manual entry, Bluetooth, or another interface?
€500 EUR in 7 days
6.0
6.0

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