I will build a mobile app for your iot or connected device


Über diesen Service
I'm Timo, founder of merkaio. I build mobile apps that talk to real hardware,
not just to an API.
Most app developers stop at the cloud. With IoT, the hard part starts exactly
there: connecting to the device itself, in the field, often without internet.
What I build:
- BLE & NFC provisioning: scan a QR code, connect via Bluetooth, configure your
sensor on site. No internet needed.
- Real-time data: live sensor values via MQTT or WebSocket, not pull-to-refresh.
- Push alerts: critical alarms that reliably reach the lock screen.
- Offline-first: technician and field-service apps that work without a signal and
sync later.
- White-label: your branding, your app, your customers.
One codebase, both platforms: React Native for iOS and Android at once.
I don't just hand over code. I handle the full release: Apple/Google signing,
store assets and the review process, so your app actually gets approved.
Typical stack: React Native, react-native-ble-plx, MQTT.js, offline sync.
You work directly with the engineer who builds it. You own the source code.
Message me before ordering so we can scope it properly. Visit merkaio.com!
Lerne Timo Wevelsiep kennen
Production Ready IoT and IIoT Platforms: Built, Deployed and Operated
- AusDeutschland
- Mitglied seitOkt. 2019
- ⌀ Antwortzeit1 Stunde
- Letzte Lieferung1 Jahr
Sprachen
Deutsch, Englisch, Niederländisch, Spanisch, Französisch, Italienisch
Mein Portfolio
FAQ
Should I contact you before ordering?
Yes. IoT apps vary a lot in scope, especially around hardware. A short call confirms the right package, timeline and price. For Standard or Premium I send a custom offer.
Can the app connect to my device via Bluetooth (BLE)?
Yes. BLE is a core part of what I do, pairing, configuration and live data from your device, using react-native-ble-plx.
Does the app talk to the hardware directly or via the cloud?
Both are possible. Direct via BLE/NFC for on-site setup without internet, or via the cloud (MQTT/REST) for remote monitoring. Often a combination of both.
Can it work offline?
Yes. I build offline-first apps for technicians in the field, they work without a signal and sync once back online.
Why React Native instead of native Swift/Kotlin?
One codebase for iOS and Android, faster delivery, lower maintenance, native performance for IoT use cases. I can do fully native where a project truly needs it.
Do you handle the App Store / Play Store release?
Yes. Signing, store assets and the review process are included, your app gets published, not just handed over as code.
Do I own the source code?
Yes. You receive the full source code and repository. No vendor lock-in.
Can you also build the platform or dashboard behind the app?
Yes, that's a separate gig (custom IoT platform & dashboard). Together they cover your full stack, device to app to platform.
102 Bewertungen für diesen Service
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| (1) | ||
| (0) | ||
| (0) | ||
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Zusammensetzung der Bewertung
- Kommunikation
- An einen Freund weiterempfehlen
- Dienstleistung wie beschrieben
Sortieren nach:
J 
johnpccd

Deutschland
Timo and Robin provided detailed and prompt consultation on cloud architecture related topics and went above and beyond to help me meet my requirements and save costs.
Bis zu 50 $
Preis
1 Tag
Dauer
Hilfreich?R 
razvanteodorisp
Wiederkehrender Kunde

Rumänien
timo is just an amazing guy, he helped us save around $1000 per month in unused server resources, and everything is running a lot faster now. we also had some database issues which he fixed incredibly fast. i will definitely work with him on all of my future projects, 5/5 stars!!
400 $-600 $
Preis
6 Tagen
Dauer
Hilfreich?D dnlnrx
Wiederkehrender Kunde

Deutschland
Wie immer, perfekte schnelle und zuverlässige Leistung. Absoluter Profi!
Hilfreich?D 
davidwebb836
Wiederkehrender Kunde

Vereinigte Staaten
Amazing work and great communication
Hilfreich?B 
babasanfoor
Wiederkehrender Kunde

Israel
Great seller Honest on top of all Great communication and great delivery Listens to issues that come up and there when you need him! My 3rd order, and Will order again
Hilfreich?
102 Bewertungen für diesen Service
| (101) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Zusammensetzung der Bewertung
- Kommunikation
- An einen Freund weiterempfehlen
- Dienstleistung wie beschrieben
Sortieren nach:
J 
johnpccd

Deutschland
Timo and Robin provided detailed and prompt consultation on cloud architecture related topics and went above and beyond to help me meet my requirements and save costs.
Bis zu 50 $
Preis
1 Tag
Dauer
Hilfreich?R 
razvanteodorisp
Wiederkehrender Kunde

Rumänien
timo is just an amazing guy, he helped us save around $1000 per month in unused server resources, and everything is running a lot faster now. we also had some database issues which he fixed incredibly fast. i will definitely work with him on all of my future projects, 5/5 stars!!
400 $-600 $
Preis
6 Tagen
Dauer
Hilfreich?D dnlnrx
Wiederkehrender Kunde

Deutschland
Wie immer, perfekte schnelle und zuverlässige Leistung. Absoluter Profi!
Hilfreich?D 
davidwebb836
Wiederkehrender Kunde

Vereinigte Staaten
Amazing work and great communication
Hilfreich?B 
babasanfoor
Wiederkehrender Kunde

Israel
Great seller Honest on top of all Great communication and great delivery Listens to issues that come up and there when you need him! My 3rd order, and Will order again
Hilfreich?

