BM12V vs Projecta BM500
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
BM12V
Monitor your vehicle's battery in real-time via Bluetooth. Test cranking and charging systems to ensure your battery is in optimal condition. View all data directly on your mobile device.
- Real-time voltage monitoring
- Bluetooth connectivity
- Cranking system testing
- Charging system testing
- Mobile data display
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Battery Monitor BM12V is an application for vehicle battery,which can let them know the real-time voltageof car battery. It helps users to know the battery fully by testing cranking and charging system voltage. All of the datas can be showed on mobile through bluetooth.
Projecta BM500
This kit allows users to monitor their battery systems, displaying key information like current, voltage, state of charge, and remaining time. It is compatible with various battery types and voltages, offering accurate measurements for a comprehensive understanding of battery health.
- Real-time current monitoring up to 500A
- Supports 12V, 24V, or 48V DC battery systems
- Compatible with AGM, GEL, and LFP batteries
- Displays voltage, SOC, and time remaining
- Accurate current (+/- 0.4%) and voltage (+/- 0.3%) measurements
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TBB'battery monitor kit is composed by a battery shunt and a monitor which allow the user to fully understand his/her battery. Here is some quick facts of this kit: 1) Measurement current is up to 500A 2) Is able to work with battery (or battery bank) 12Vdc, 24Vdc or 48Vdc 3) Compatible with AGM, GEL or LFP battery 4) An elegant design monitor to display battery information such as current, voltage, SOC, time remaining etc. 5) The monitor could be installed at any location where with easy access to users 6) Measurement accuracy: Current: +/- 0.4% Voltage: +/- 0.3%
Screenshots
Verdict
The clearest difference is update cadence: BM12V at every 3 weeks against Projecta BM500's every 7 months. BM12V also leads on review sentiment (23% vs 0%). Projecta BM500's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BM12V ships an update every 3 weeks, Projecta BM500 every 7 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | BM12V | Projecta BM500 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 23.1% of reviews โ better | 0.0% of reviews |
| Update frequency | Every 3 weeks โ better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 11 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | ไฟๅ ้น | TBB Power Co., Ltd |
Customer experience
BM12V
Projecta BM500
In-app purchases
BM12V
No in-app purchases
Projecta BM500
No in-app purchases
Questions
Is BM12V free?
Is Projecta BM500 free?
Do BM12V or Projecta BM500 have ads?
Which is updated more often, BM12V or Projecta BM500?
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