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Flutix is a demo application built using Flutter and the MVVM architecture. It allows users to purchase cinema tickets using a dummy API, as well as top up their e-wallet within the app.
The application also provides detailed movie information, including ratings, thumbnails, titles, and ticket prices.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Wound up on this app development project!🚀
NEW CASE STUDY!
🙌 E-Strum: App + Device for Tracking Light Availability at Home
ABOUT THE APP:
Scheduled and unscheduled power outages in Ukraine made it hard for people to plan their day. The client wanted a hardware device paired with a mobile app that detects light presence in a room and builds analytics from it — so people could plan around real outage patterns, not guesswork.
THE CHALLENGE:
- Take E-Strum from concept to a working hardware + software product:
- Ship secure OTA firmware updates (CI/CD, embedded flashing code, secure distribution server).
- Handle high device load without degrading service.
THE PROCESS:
- Ran discovery first - locked requirements before build, since hardware mistakes are far costlier to fix late than software ones.
- Tackled the riskiest unknowns early - OTA firmware and device-connection logic went first, ahead of UI work.
- Split hardware and backend workstreams in parallel, with device registration/events as the shared contract between them.
THE RESULTS
- Rolled out OTA firmware updates to 1,000+ connected devices with zero manual re-flashing required 💯
Kept backend response times under 300ms even as concurrent connected devices scaled past 1,200 🙌
Held device-connection success rate at 97%+ on first attempt under real-world Wi-Fi conditions 🧠
