Battery Testing vs Battery Day
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Battery Testing
This app helps you understand your iOS device's battery performance. It identifies battery runtimes and provides data to help you determine if your battery needs replacement. Monitor your device's battery health and runtime with detailed insights.
- Monitor device runtimes
- Estimated and raw battery data
- Check battery health
- Identify battery issues
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BatteryTesting is a well-designed battery benchmarking app for iOS devices. It's also the perfect test for your iOS battery, no matter if it’s brand new or gently used. Did you ever wonder why your device's battery is always running low? With BatteryTesting and its technique to identify battery runtimes, you will always know what's wrong with your battery. ►WHAT IT DOES The application will display your device's runtimes adjusted accordingly or even show you further data on your battery (depending on the iOS version). ►KEY FEATURES • Monitor your device's runtimes • Estimated, and calculated raw data • Easily to check your battery's health ►SUPPORT The main objective of BatteryTesting is to give users an overview of their device's runtimes. If you are unsure about a battery replacement, feel free to send us an e-mail or tweet us (@BatteryTesting).
Battery Day
This app provides an at-a-glance estimate of your device's battery discharge time. It offers various widgets, gauges, and charts to visualize battery level history and predict remaining usage. The app requires active widget usage to record battery consumption.
- Battery discharge time estimation
- Variety of widgets, gauges, and charts
- Battery level history visualization
- Battery usage prediction
- Color-coded battery usage indication
- Requires active widget for data recording
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Battery Day estimates the time of your battery discharge on your iPhone, iPad and Apple Watch. Get your battery remaining time at a glance thanks to a variety of widgets, gauges and charts. Visualize your battery level history with a chart including battery level prediction and color for battery usage indication. In order for the app to record your battery usage, Battery Day must be active as a widget.
Screenshots
Verdict
The clearest difference is price: Battery Testing at Free against Battery Day's $2.99. Battery Testing also leads on rating (4.5 vs 4.0) and update cadence (fortnightly vs every 5 months). Battery Day's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support 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
Battery Testing is free to download; Battery Day costs $2.99 up front. Battery Testing sells 1 one-off in-app purchase. Battery Day asks for nothing beyond the download.
Battery Testing holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Battery Testing has 12K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 23% of Battery Testing's written reviews are positive against 33% of Battery Day's, so the app with the better star average is not the one people write more warmly about.
Battery Testing ships an update fortnightly, Battery Day every 5 months. The most recent releases landed on September 26, 2026 and September 3, 2026 respectively.
| Parameter | Battery Testing | Battery Day |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (12K ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 23.3% of reviews | 33.3% of reviews — better |
| Number of ratings | 12K — better | 1 |
| Update frequency | Fortnightly — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 61 MB | 3 MB |
| Age rating | 9+ | 4+ |
| Developer | Binh Tran | Eliott Morgensztern |
Customer experience
Battery Testing
Battery Day
Bugs and requests
Battery Testing
Reported bugs
2 issues- App crashes or stops responding during testing
- Incorrect device information detection
Requested features
3 requests- Provide more detailed battery health metrics
- Improve accuracy of battery testing
- Reduce ad interruptions during testing
Battery Day
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Battery Testing
- Remove Advertisements$1.99
Battery Day
No in-app purchases
Questions
Is Battery Testing free?
Is Battery Day free?
Which has better reviews, Battery Testing or Battery Day?
Do Battery Testing or Battery Day have ads?
Which is updated more often, Battery Testing or Battery Day?
Other comparisons
