Time Calculation vs iEventTimer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time Calculation
Easily add and subtract time in hours and minutes without manual rounding. Copy calculation results and review past formulas with a history feature. Includes navigation and deletion tools for formula input.
- Add and subtract hours and minutes
- Automatic minute rounding
- Copy calculation results
- View calculation history
- Formula input navigation
- Delete formula history
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Time Calculation is an application that makes it easy to add and subtract time. With this application you can easily calculate hours: minutes without having to perform troublesome calculations to round up or round down minutes by yourself every 60 minutes. You can copy the calculation result.You can also check the calculated results and the formula history. Please input hours and minutes in the order "hour", ": (colon)", "minute". ■ "Arrow" button You can move the cursor position when entering calculation formula. Please use it when modifying the formula. ■ "DEL" button Delete one letter at the position of the cursor of the calculation formula you are entering. If the cursor is at the back, you can delete the previous character. ■ "AC" button Delete all entered calculation formula and calculation result. ■ "Copy" button When calculation is completed, a square "Copy" button is displayed to the left of the calculation result. By tapping "Copy" button, you can copy the calculation result and paste it as text data to other application. ■ "Clock" button You can see 10 histories of calculation results and calculation formulas. When it reaches more than 10, it will be deleted from the old history. In addition, you can delete the history by tapping "Trash can button" next to each history.
iEventTimer
This utility app helps you track upcoming events with customizable countdowns and notifications. It syncs across Apple devices and offers widgets for at-a-glance updates. Enjoy an ad-free experience with automatic event date loading from the web.
- Countdown timers for events
- Customizable notifications
- Home and Lock Screen widgets
- Live Activities support
- Automatic web event date loading
- iCloud sync across devices
- Ad-free experience
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Never miss an event with iEventTimer. iEventTimer is available for iPhone, iPad, Apple Watch and Mac, so you can always check the countdown to the next event, wherever you are. Notifications: Receive daily and hourly notifications (optional, configurable) leading up to an event on your iPhone, iPad, Apple Watch and more. Mute events that you don't want to receive notifications for. Widgets: Check the timer at a glance from your Home and Lock Screens and stay up-to-date with the latest event announcements. Live Activities on the Lock Screen and Dynamic Island are also supported. Automatic updates: iEventTimer loads event dates from the web, so you never have to remember to add an event. If you want, you can also add custom events to count down to, and sync them to all of your devices via iCloud. Customization: From the amount of notifications to the colors of app and widgets, you can customize iEventTimer to fit your preferences, adding your personal touch. Ad free experience. iEventTimer is not and never will be showing you ads in the app.
Screenshots
Verdict
The clearest difference is review sentiment: iEventTimer at 100% against Time Calculation's 0%. iEventTimer also leads on rating (4.4 vs 2.0) and update cadence (every 5 weeks vs every 42 months). On ads, in-app purchases, monetization model 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
Time Calculation costs $1.99 and iEventTimer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iEventTimer holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: iEventTimer has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Time Calculation's written reviews are positive against 100% of iEventTimer's.
Time Calculation ships an update every 42 months, iEventTimer every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Time Calculation | iEventTimer |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 2.0 (1 ratings) | 4.4 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 42 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Kei Suefuji | Anian Schleyer |
Customer experience
Time Calculation
iEventTimer
In-app purchases
Time Calculation
No in-app purchases
iEventTimer
No in-app purchases
Questions
Is Time Calculation free?
Is iEventTimer free?
Which has better reviews, Time Calculation or iEventTimer?
Do Time Calculation or iEventTimer have ads?
Which is updated more often, Time Calculation or iEventTimer?
Other comparisons
