Battery Master 12V vs Battery Asst
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Battery Master 12V
This tool detects and tests lead-acid batteries, assessing CCA and health. It calculates remaining battery life based on temperature and CCA data. Users can also test cranking and charging systems, with all results shareable and printable.
- Lead-acid battery detection
- Test battery CCA and health
- Calculate available use life
- Test cranking system
- Test charging system
- Share and print test results
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Battery Master is the detection tool for lead acid battery. By installed on battery, it can intelligently test battery CCA and health condition, calculate battery available use life based on temperature and CCA data sheet. When phone is close to device, the app will automatically obtain battery test result. Also, user can alternatively test battery health, cranking system and charging system. All saved history test results can be shared and printed out.
Battery Asst
Monitor your car battery's voltage in real time. This practical app displays the starting and charging system voltages, providing a comprehensive understanding of your car battery's condition directly on your mobile device via Bluetooth.
- Real-time car battery voltage display
- Monitor starting system voltage
- Monitor charging system voltage
- Bluetooth data transmission
- All-round battery condition understanding
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1. Battery Asst is an application assistant specially designed for car batteries. It is a practical APP that allows users to view the voltage of the car battery in real time. 2. It can monitor the voltage of the car's starting system and the charging system in real time, helping users to understand the characteristics of the car battery in an all-round way. 3. Transmit data to mobile phone via bluetooth for real-time viewing
Screenshots
Verdict
The clearest difference is rating: Battery Asst at 4.0 against Battery Master 12V's 3.4. Battery Asst also leads on review sentiment (20% vs 0%) and iOS requirement (9.0 vs 15.6). On price, ratings volume, update cadence and ads 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.
Battery Asst holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews point the same way: 0% of Battery Master 12V's written reviews are positive against 20% of Battery Asst's.
Battery Master 12V ships an update every 6 weeks, Battery Asst monthly. The most recent releases landed on October 17, 2026 and October 30, 2026 respectively.
| Parameter | Battery Master 12V | Battery Asst |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) | 4.0 (8 ratings) — better |
| Positive reviews | 0.0% of reviews | 20.0% of reviews — better |
| Number of ratings | 5 | 8 — better |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Leagend Optoelectronics Co., Ltd. | 婷 赵 |
Customer experience
Battery Master 12V
Battery Asst
In-app purchases
Battery Master 12V
No in-app purchases
Battery Asst
No in-app purchases
Questions
Is Battery Master 12V free?
Is Battery Asst free?
Which has better reviews, Battery Master 12V or Battery Asst?
Do Battery Master 12V or Battery Asst have ads?
Which is updated more often, Battery Master 12V or Battery Asst?
Other comparisons
