Comparison

Zen Battery vs Smart Battery Widget

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

Smart Battery Widget

Monitor your device's battery, storage, and network activity with real-time data and smart estimations. View key metrics and usage predictions directly on your home screen with customizable widgets.

Highlights
  • Battery monitoring and usage estimations
  • Storage monitoring and capacity estimations
  • Network activity and speed monitoring
  • Customizable home screen widgets
  • Lock screen widgets
  • Real-time data display
Features
Read full description

Understand your battery. Know your storage. Keep track of your data. Smart Battery Widget combines AI-powered resource insights, practical usage estimates, and beautifully designed widgets to help you understand your iPhone and iPad at a glance. ■ AI INSIGHTS, POWERED BY APPLE INTELLIGENCE
Make sense of your device’s recent battery, storage, and network activity with Resource Insights. Get short, relevant observations based on recorded metrics, with practical suggestions when the data supports them. See whether network findings relate to Wi-Fi, cellular, or both. Insights focus on meaningful findings, keeping your summary clear and useful. AI analysis runs privately on your device. ■ BATTERY ESTIMATES FOR EVERYDAY ACTIVITIES
Go beyond a battery percentage. Explore estimates of how much usage time your current charge could provide for everyday activities. Check your battery level, review recorded battery history, and keep useful estimates within reach through your widgets. ■ SEE WHAT YOUR STORAGE CAN HOLD
Turn available space into something easier to understand. Explore estimates of how many photos, videos, audio files, or podcasts could fit on your device. View total, used, and free storage to help plan your next download or recording. ■ FOLLOW YOUR WI-FI & CELLULAR USAGE
Monitor uploads, downloads, and current transfer speeds in the app. Review network activity and track usage against your data package allowance. ■ WIDGETS THAT KEEP YOU INFORMED
Choose the information and layout that suit your day: • 3 battery widgets showing battery status and usage estimates
 • 3 storage widgets showing available space and storage estimates
 • 4 network graph widgets for data activity 
• 2 data package widgets for tracking your allowance
 • 2 Fusion Widgets combining battery, storage, and network metrics
 • 2 sets of Lock Screen widgets for battery level and history, plus available storage and graphs Designed for iPhone and iPad. Some widgets require an in-app purchase. PLEASE NOTE: 
AI insights require iOS 26 or later on a supported device with Apple Intelligence enabled and its model ready. Resource metrics remain available without Apple Intelligence. Battery and storage estimates are approximate; actual results vary. AI-generated insights may be inaccurate. Widget refresh timing is managed by iOS. We’d love to hear your ideas:
 smartbattery@smartbits-studio.com

Screenshots

Zen Battery4 screens
Smart Battery Widget4 screens

Verdict

The call

The clearest difference is monetization model: Smart Battery Widget at free with in-app purchases against Zen Battery's subscription. Smart Battery Widget also leads on update cadence (every 3 months vs every 18 months). Zen Battery's advantage is review sentiment (89% vs 58%) and rating (4.7 vs 4.3). On price, ads, 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 Smart Battery Widget sells 2 one-off in-app purchases. 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 4.3. That said, the two scores are not equally well evidenced: Zen Battery has 8.1K ratings behind it against 190, so its average is the more settled of the two. Written reviews point the same way: 89% of Zen Battery's written reviews are positive against 58% of Smart Battery Widget's.

UpkeepUpdate frequency

Zen Battery ships an update every 18 months, Smart Battery Widget every 3 months. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Zen Battery versus Smart Battery Widget: the parameters behind the verdict, then further details
ParameterZen BatterySmart Battery Widget
PriceFreeFree
Rating4.7 (8.1K ratings) — better4.3 (190 ratings)
Positive reviews89.1% of reviews — better58.2% of reviews
Number of ratings8.1K — better190
Update frequencyEvery 18 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.0 — better
Further details — not scored
Size117 MB22 MB
Age rating4+4+
DeveloperShinobit LLCElham Madh Farimani

Customer experience

Zen Battery

All ratings8,117 ratings
Positive93.2%
Neutral3.8%
Negative3.0%
Written reviews267 reviews
Positive89.1%
Neutral4.5%
Negative6.4%

Smart Battery Widget

All ratings190 ratings
Positive83.7%
Neutral5.3%
Negative11.1%
Written reviews79 reviews
Positive58.2%
Neutral15.2%
Negative26.6%

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

Smart Battery Widget

From 190 App Store ratings

What we love

  • 🎨 Beautiful and modern UI design
  • 👍 Simple and intuitive user interface
  • 📊 Useful widget functionality for monitoring battery, storage, and data
  • ⚡ Lightweight app with minimal resource usage
  • 🆓 No ads or intrusive monetization

Room to improve

  • 🐛 Battery estimation features frequently broken or showing zero values
  • 🐛 Widgets not displaying correctly or updating in real-time
  • 🐛 Data accuracy issues across multiple features
  • 🐛 iOS compatibility problems (iOS 16, 17, and newer versions)
  • 🐛 iPad version not functioning properly

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

Smart Battery Widget

Reported bugs

14 issues
  • Battery consumption estimations showing zero or stuck values
  • Widgets not appearing in widget menu or home screen
  • Fusion widget displaying as blank white block
  • Widget not updating in real-time without opening app
  • Storage widget showing incorrect capacity values
Show 9 more
  • Data widget not resetting after manual reset
  • Cellular data percentage meter glitched
  • Game category mislabeled as 'Call' in battery widget
  • iPad version showing blank boxes or no values
  • App freezing or unable to navigate between pages
  • Widget showing previous data plus new data combined
  • Battery percentage not updating on widget
  • Inaccurate data usage compared to system stats
  • App crashing or not loading after recent updates

Requested features

11 requests
  • Clear mode support for iOS 26 widgets
  • Apple Watch app support
  • Auto-reset of data package on fixed monthly date
  • Real-time network speed monitoring widgets
  • Show which apps/processes are using network
Show 6 more
  • Customizable widget colors to match home screen theme
  • Daily data limit option in addition to monthly
  • Permanent dark theme option
  • Notification alerts for data package limits
  • Continuous real-time updates during charging
  • Better iPad compatibility and functionality

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
2 purchases

Smart Battery Widget

One-time2
  • Lock screen widgets$1.99
  • Fusion Widget$1.99

Questions

Is Zen Battery free?
Zen Battery is free to download, with in-app purchases available.
Is Smart Battery Widget free?
Smart Battery Widget is free to download, with in-app purchases available.
Which has better reviews, Zen Battery or Smart Battery Widget?
Zen Battery is rated higher. Zen Battery averages 4.7 out of 5 from 8.1K ratings, while Smart Battery Widget averages 4.3 from 190 ratings.
Do Zen Battery or Smart Battery Widget have ads?
Neither Zen Battery nor Smart Battery Widget shows ads.
Which is updated more often, Zen Battery or Smart Battery Widget?
Zen Battery ships an update every 18 months, and Smart Battery Widget every 3 months. Most recently, Zen Battery was updated on November 10, 2026 and Smart Battery Widget on November 7, 2026.

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