Battery Master 12V vs AOD Battery
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.
AOD Battery
This utility app displays your phone's battery percentage on the inline widget area. It's especially useful for iPhones with Always-On display to quickly check power levels. Refresh the widget by tapping it if the percentage appears outdated.
- Always-On Display battery percentage
- Inline widget display
- Quick refresh by tapping widget
- iPhone compatibility
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AOD Battery lets you add the phone battery percentage on the inline widget area. Highly recommend using the app with iPhones with Always-On display to get the most benefits. Q&A Q: The battery percentage shown on the widget does not match the actual battery percentage. A: The widget can take longer to show the latest battery percentage. You can quickly refresh the percentage by clicking the widget. Q: The battery percentage shown on the devices is widely different than the actual battery percentage. A: The widget can take some time to update to show the latest battery percentage. The difference may be more significant in quick charging/discharging events.
Screenshots
Verdict
Battery Master 12V and AOD Battery both sit at 3.4 stars, but that hides the real split: 50% of AOD Battery's written reviews are positive against 0% of Battery Master 12V's. AOD Battery also leads on update cadence (every 4 days vs every 6 weeks). Battery Master 12V's advantage is in-app purchases (none vs 2). On price, rating, ratings volume 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. AOD Battery sells 2 one-off in-app purchases. Battery Master 12V asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.4 for Battery Master 12V against 3.3 for AOD Battery. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews are what separate them: 0% of Battery Master 12V's written reviews are positive against 50% of AOD Battery's.
Battery Master 12V ships an update every 6 weeks, AOD Battery every 4 days. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.
| Parameter | Battery Master 12V | AOD Battery |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) — better | 3.3 (3 ratings) |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 6 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 39 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Leagend Optoelectronics Co., Ltd. | MAPLEFORM TECHNOLOGY INC. |
Customer experience
Battery Master 12V
AOD Battery
In-app purchases
Battery Master 12V
No in-app purchases
AOD Battery
- 10-day TrialFree
- AOD Battery$4.99
Questions
Is Battery Master 12V free?
Is AOD Battery free?
Which has better reviews, Battery Master 12V or AOD Battery?
Do Battery Master 12V or AOD Battery have ads?
Which is updated more often, Battery Master 12V or AOD Battery?
Other comparisons
