Boltcard NFC Programmer vs IoT sensors
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Boltcard NFC Programmer
This tool allows you to program blank NFC cards to function as personal Boltcards, enabling a contactless payment experience for the Lightning network. It requires prior setup of a Boltcard instance on GitHub.
- Program NTAG424DNA NFC cards
- Create personal Boltcards
- Contactless Lightning network payments
- Compatible with Lightning PoS terminals
- Works with Breez wallet PoS App
Read full descriptionHide full description
Quickly program a blank NFC card (NTAG424DNA) to act as your own personal Boltcard. A contactless / paywave like experience for the Lightning network. Before programming your NFC card you must set up your own https://github.com/boltcard/boltcard The boltcard can be used with Lightning PoS terminals that have NFC support, or Breez wallet PoS App.
IoT sensors
Read full descriptionHide full description
IoT sensors is a development app for visualisation of sensor data sent as JSON over BLE, TCP or UART. The sensor type is detected automatically, showing appropriate UI elements. Sensors can be shared with other clients by enabling bridge mode. – Thingy:91 temperature, pressure, humidity, air resistance, ambient light, accelerometer, impact, LED control – compass with 3D calibration, gravity, gyroscope, battery state of charge – JSON format for sensor data – connectivity: BLE, TCP, UART – bridge TCP to BLE or UART requires g_relay, gncom or compatible server, and allows multiple clients to share a single sensor – compatible with sensor samples from nano RTOS – new sensors can be added on demand
Screenshots
Verdict
The clearest difference is device support: IoT sensors at 4 against Boltcard NFC Programmer's 2. Boltcard NFC Programmer's advantage is iOS requirement (12.4 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Boltcard NFC Programmer ships an update every 5 weeks, IoT sensors monthly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | Boltcard NFC Programmer | IoT sensors |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 23 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ones and Zeros Technology Limited | Georgi Valkov |
In-app purchases
Boltcard NFC Programmer
No in-app purchases
IoT sensors
No in-app purchases
Questions
Is Boltcard NFC Programmer free?
Is IoT sensors free?
Do Boltcard NFC Programmer or IoT sensors have ads?
Which is updated more often, Boltcard NFC Programmer or IoT sensors?
Other comparisons
