Comparison

Zen Battery vs Battery Testing

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zen Battery

This app provides detailed battery information for your iPhone and iPad, including remaining hours for various activities. Customize the visual display with fluid animations and color options. Receive alerts when your device is fully charged.

Highlights
  • Battery life estimation for music, video, calls, and internet
  • Customizable 'Zen' display modes
  • Interactive fluid battery animation
  • Adjustable liquid color and battery design
  • Full charge warning sound
  • Widgets for quick battery status
Features
Read full description

Here you have the definitive battery application for your iPhone and iPad from Shinobit! A quick glance will let you know how many hours you have left for listening to music, watching videos, talking on the phone and surfing the Internet. If you want your battery to be even more "Zen", touching the screen once will hide the icons, leaving only the time and the battery charge percentage on the screen. Touching the screen a second time will only leave the battery. Touching a third time brings back all the data you had at the start. Move the device to see how the fluid moves around inside the battery, tilt it and you will see how it moves from one side to the other. You can change the color of the liquid inside the battery and the battery design that best suits your personality. Once the battery is charged, the application will make a warning sound. A subscription is required to unlock the full features of Zen Battery. Subscription Details: * Monthly Subscription * Annual Subscription with a 3-day free trial. All plans offer all premium features with the flexibility to cancel anytime. - Payment will be charged to your iTunes Account at confirmation of purchase. - Your subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase. The times and percentages are displayed with 5-percent increases. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

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.

Highlights
  • Monitor device runtimes
  • Estimated and raw battery data
  • Check battery health
  • Identify battery issues
Features
Read full description

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).

Screenshots

Zen Battery4 screens
Battery Testing4 screens

Verdict

The call

The clearest difference is review sentiment: Zen Battery at 89% against Battery Testing's 23%. Zen Battery also leads on ads (none vs shown) and rating (4.7 vs 4.5). Battery Testing's advantage is monetization model (free with in-app purchases vs subscription) and update cadence (fortnightly vs every 18 months). On price, ratings volume, in-app purchases and 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Zen Battery sells 3 in-app purchases, starting at $1.99 per month and Battery Testing sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Zen Battery holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 8.1K and 12K respectively. Written reviews point the same way: 89% of Zen Battery's written reviews are positive against 23% of Battery Testing's.

UpkeepUpdate frequency

Zen Battery ships an update every 18 months, Battery Testing fortnightly. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
Zen Battery versus Battery Testing: the parameters behind the verdict, then further details
ParameterZen BatteryBattery Testing
PriceFreeFree
Rating4.7 (8.1K ratings) — better4.5 (12K ratings)
Positive reviews89.0% of reviews — better23.1% of reviews
Number of ratings8.1K12K — better
Update frequencyEvery 18 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size117 MB61 MB
Age rating4+9+
DeveloperShinobit LLCBinh Tran

Customer experience

Zen Battery

All ratings8,117 ratings
Positive93.2%
Neutral3.8%
Negative3.0%
Written reviews264 reviews
Positive89.0%
Neutral4.5%
Negative6.4%

Battery Testing

All ratings12,278 ratings
Positive88.6%
Neutral5.7%
Negative5.8%
Written reviews355 reviews
Positive23.1%
Neutral7.3%
Negative69.6%

User reviews

Zen Battery

From 8.1K App Store ratings

What we love

  • 👍 Reliable battery monitoring
  • 🚀 Accurate battery percentage display
  • 💡 Customizable battery color
  • 👍 Simple and easy to use
  • 👍 Large, clear battery visualization

Room to improve

  • 🔋 High battery consumption
  • 🐛 Inconsistent battery percentage accuracy
  • 🔋 Drains device battery quickly
  • 🔒 Subscription-based model

Battery Testing

From 12K App Store ratings

What we love

  • 👍 Useful for testing battery health
  • 🙂 Provides detailed battery information
  • 💡 Helpful for refurbished/older devices

Room to improve

  • 🔋 Inaccurate battery health readings
  • 📺 Excessive ads interrupting testing
  • 🐛 Inconsistent and unreliable results
  • 🤔 Unclear what the scores represent

Bugs and requests

Zen Battery

Reported bugs

2 issues
  • App freezes or crashes
  • Ads break app functionality

Requested features

4 requests
  • 12-hour clock option
  • Battery saver mode
  • Widget support
  • Ability to disable ads

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

In-app purchases

3 purchases

Zen Battery

Subscriptions2
  • Monthly Subscription3 Days trial$1.991 Month
  • Yearly Subscription3 Days trial$9.991 Year
One-time1
  • Lifetime$19.99
1 purchases

Battery Testing

One-time1
  • Remove Advertisements$1.99

Questions

Is Zen Battery free?
Zen Battery is free to download, with in-app purchases available.
Is Battery Testing free?
Battery Testing is free to download, with in-app purchases available.
Which has better reviews, Zen Battery or Battery Testing?
Zen Battery is rated higher. Zen Battery averages 4.7 out of 5 from 8.1K ratings, while Battery Testing averages 4.5 from 12K ratings.
Do Zen Battery or Battery Testing have ads?
Battery Testing shows ads; Zen Battery does not.
Which is updated more often, Zen Battery or Battery Testing?
Zen Battery ships an update every 18 months, and Battery Testing fortnightly. Most recently, Zen Battery was updated on September 28, 2026 and Battery Testing on September 30, 2026.

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