Comparison

Zen Flip Clock vs Calculator for iPad +

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

Head to head
About

Zen Flip Clock

This app offers a minimalist clock experience with multiple themes and powerful focus tools. It functions as a fullscreen desk clock and includes a Pomodoro timer, stopwatch, and hourly chime to help manage time and improve productivity.

Highlights
  • Multiple clock themes (flip, digital, minimalist)
  • Fullscreen desk clock functionality
  • Pomodoro timer for focused work sessions
  • Stopwatch for timing tasks
  • Hourly chime for routine building
  • Time usage statistics
  • Home and lock screen widgets
Features
Read full description

Zen Flip Clock A minimalist flip clock, desk clock, and focus timer designed to make time clear, simple, and easy to follow. Choose from multiple clock themes, including flip clock, digital clock, and minimalist styles. Use it as a fullscreen clock for studying, working, focusing, or as a clean nightstand clock. Open the app and start right away. Why Zen Flip Clock More than just a clock, Zen Flip Clock is a simple tool for focus and time management. From study sessions and focused work to everyday timing, it helps you stay aware of your time and make every minute count. Key Features Multiple Clock Themes Choose from flip clock, digital clock, and minimalist clock designs. Use your favorite theme as a desk clock, fullscreen clock, or nightstand clock for work, study, and everyday use. Pomodoro Timer Stay focused with the built-in Pomodoro timer. Perfect for studying, reading, working, and other tasks that require concentration. Count Up Timer Track elapsed time for studying, workouts, meditation, reading, and everyday activities. Hourly Chime Stay aware of time with hourly chimes and customizable reminders. Build better routines for work, study, and daily life. Focus Statistics Track your focus time and usage to better understand how you spend your time. Personalization Multiple Themes Switch between a variety of minimalist clock themes, from classic flip clock designs to clean digital styles. Smooth Animations Enjoy clean, natural, and fluid clock animations designed for a calm visual experience. Home & Lock Screen Widgets View the time at a glance with Home Screen and Lock Screen widgets without opening the app. Easy Controls Swipe left for Pomodoro Swipe right for Count Up Timer Tap to open Settings Whether you need a flip clock for your desk, a fullscreen digital clock for studying, a Pomodoro timer for focused work, or a simple nightstand clock, Zen Flip Clock keeps time clear and focus simple. Make time visible. Stay focused. Contact & Legal ▸ Bug Reports & Feedback: minimalsoftwarestudio@gmail.com ▸ Terms of Use: https://minimalsoftwarestudio.feishu.cn/docs/doccnK7LrYMwBFdr7SRl4qQv2lb

About

Calculator for iPad +

This app offers a scientific calculator experience designed for iPads. It provides unlimited access to all content and features through a monthly subscription. Pricing may vary by region, and subscriptions can be managed through account settings.

Highlights
  • Scientific calculator functionality
  • Unlimited access to content
  • iPad optimized interface
  • Subscription management
  • Auto-renewing subscription option
Features
Read full description

Redefining the new generation of calculators for the iPad SUBSCRIPTION PRICING AND TERMS This calculator offers an auto-renewing subscription to provide you with unlimited access to the calculator. the price is $2.99/month for unlocking all content and features. This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Read more about our terms and conditions here: Terms of service: https://weibo.com/5580956204/I55tg3VVB Privacy policy: https://weibo.com/5580956204/HB9vBf59c Email: From2019219@gmail.com

Screenshots

Zen Flip Clock4 screens

Verdict

The call

The clearest difference is monetization model: Zen Flip Clock at free with in-app purchases against Calculator for iPad +'s subscription. Zen Flip Clock also leads on ads (none vs shown) and rating (4.7 vs 4.3). On price, ratings volume, in-app purchases and iOS requirement 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 Flip Clock sells 3 in-app purchases, starting at $0.99 per month and Calculator for iPad + sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Zen Flip Clock holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 6.2K and 3.6K respectively. Written reviews point the same way: 72% of Zen Flip Clock's written reviews are positive against 61% of Calculator for iPad +'s.

UpkeepUpdate frequency

Zen Flip Clock ships an update every 2 weeks, Calculator for iPad + every 4 weeks. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
Zen Flip Clock versus Calculator for iPad +: the parameters behind the verdict, then further details
ParameterZen Flip ClockCalculator for iPad +
PriceFreeFree
Rating4.7 (6.2K ratings) — better4.3 (3.6K ratings)
Positive reviews71.5% of reviews — better60.5% of reviews
Number of ratings6.2K — better3.6K
Update frequencyEvery 2 weeks — betterEvery 4 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.015.0
Further details — not scored
Size104 MB19 MB
Age rating4+4+
DeveloperChaoyang Minimal Software StudioBeijing Free Calculator Technology Co., Ltd.

Customer experience

Zen Flip Clock

All ratings6,186 ratings
Positive91.3%
Neutral3.9%
Negative4.8%
Written reviews688 reviews
Positive71.5%
Neutral11.8%
Negative16.7%

Calculator for iPad +

All ratings3,614 ratings
Positive83.2%
Neutral4.4%
Negative12.4%
Written reviews1,142 reviews
Positive60.5%
Neutral6.7%
Negative32.8%

User reviews

Zen Flip Clock

From 6.2K App Store ratings

What we love

  • 🚀 Amazing app
  • 👍 Aesthetic and minimalistic
  • 👍 Useful for studying and productivity
  • 👍 Simple and easy to use
  • 👍 Great for a desk clock

Room to improve

  • 🐛 Time display issues
  • 🐛 Widget not working as expected
  • 🐛 Pomodoro timer resets when switching apps
  • 🔋 High battery consumption
  • 💰 Paid features required for full functionality

Calculator for iPad +

From 3.6K App Store ratings

What we love

  • 👍 Functional and easy to use
  • 🚀 Fast calculations
  • 💡 Helpful for school/homework
  • 🎨 Customizable design

Room to improve

  • 🔍 Too many ads/in-app purchases
  • 🐛 Inaccurate calculations
  • 💰 Subscription model for basic features
  • 🔒 Privacy concerns with permissions

Bugs and requests

Zen Flip Clock

Reported bugs

5 issues
  • Time display inaccuracies
  • Widget freezing and displaying incorrect time
  • Pomodoro timer not working as expected
  • Compatibility issues with latest iOS updates
  • App crashing or becoming unresponsive

Requested features

8 requests
  • Add alarm functionality
  • Implement live activities support
  • Allow custom pomodoro timer durations
  • Provide more theme/color options
  • Add world clock/timezone support
Show 3 more
  • Enable screen lock/password protection
  • Improve widget behavior and reliability
  • Introduce a timer mode (countdown)

Calculator for iPad +

Reported bugs

3 issues
  • Buttons not responsive
  • History/calculation display issues
  • Conversion feature not working properly

Requested features

4 requests
  • Fraction support
  • Memory function
  • Handwriting recognition improvements
  • No ads for paid users

In-app purchases

3 purchases

Zen Flip Clock

Subscriptions2
  • Monthly Pro3 Days trial$0.991 Month
  • Yearly Pro7 Days trial$4.991 Year
One-time1
  • Lifetime Pro$9.99
2 purchases

Calculator for iPad +

Subscriptions1
  • Monthly VIP$2.991 Month
One-time1
  • Calculator permanent purchase$9.99

Questions

Is Zen Flip Clock free?
Zen Flip Clock is free to download, with in-app purchases available.
Is Calculator for iPad + free?
Calculator for iPad + is free to download, with in-app purchases available.
Which has better reviews, Zen Flip Clock or Calculator for iPad +?
Zen Flip Clock is rated higher. Zen Flip Clock averages 4.7 out of 5 from 6.2K ratings, while Calculator for iPad + averages 4.3 from 3.6K ratings.
Do Zen Flip Clock or Calculator for iPad + have ads?
Calculator for iPad + shows ads; Zen Flip Clock does not.
Which is updated more often, Zen Flip Clock or Calculator for iPad +?
Zen Flip Clock ships an update every 2 weeks, and Calculator for iPad + every 4 weeks. Most recently, Zen Flip Clock was updated on October 22, 2026 and Calculator for iPad + on October 21, 2026.

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