Apps for hardware and connected devices
The half your electronics people can't do.
If you make a device, you already know the problem: your engineers build good hardware, and then the app is quoted by a studio that has never seen a schematic and needs a spec you don't have time to write. I read the schematic. I've spent thirteen years on the other side of it.
This is for you if
- You manufacture an instrument, controller or device that needs a phone app
- You have equipment in the field and no way to see or control it remotely
- You need one person who can talk to both the firmware engineer and the app store
What you get
- ✓ Native iOS and Android apps for BLE and Wi-Fi devices
- ✓ Core Bluetooth, custom GATT services, pairing and reconnection that survives real use
- ✓ Live control and telemetry over WebSockets
- ✓ ESP32 firmware where it makes sense to write it
- ✓ Web dashboards for the people who don't want an app
- ✓ Honest advice on which off-the-shelf hardware to use instead of building
What I don't do
- — Custom PCB design and layout
- — EMC testing, CE certification, design for manufacture
- — Volume manufacturing or supply chain
- — Safety-critical or certified embedded systems
If your project needs something on this list, I'll say so on the first call and point you to someone who does it.
Proof I can do this
I've built the whole chain myself — sensor, control logic, relay output, local display, and both a WebSocket web interface and a native iOS app over BLE. Small systems, but complete ones, and one of them has run unattended through several winters.
Smart LED matrix
An ESP32 BLE peripheral with a custom GATT service and a native iOS app for real-time control.
See the project →How we'd work together
01Free project review
Free · 2 working daysSend me what you want built. You get a price range, a timeline, a technical approach and an honest market check — including whether something off the shelf already does the job.
02Intro call
Free · 30 minYou describe what you have and what you need. I tell you straight whether I'm the right person, and roughly what it costs. No deck, no pitch.
03Blueprint
€1,200 · 1 weekA fixed-price week that removes the unknowns: technical approach, what talks to what, the risks worth worrying about, and a fixed quote for the build. Yours to keep, even if you hire someone else.
04Build
Fixed price, quoted after the reviewFixed scope, fixed price, in phases you can stop between. Code lives in your repository from day one. You see something working every week.
05Care plan
Monthly, agreed up frontThe part most people skip. OS updates, store policy changes, certificate renewals, crash reports, small improvements — and one person who answers the phone when something breaks.
I won't be the cheapest quote you get. If cheapest is what you need, I'll say so on the first call rather than waste your time.
Priced in euro. I invoice as a registered sole proprietor (FOP) in Ukraine, so no VAT is added by me — an EU business client handles it as a normal non-EU supplier invoice.
Tell me what you're trying to do.
Send it over and I'll come back with a price, a plan and an honest market check — free, within two working days. Or book a call if you'd rather talk.