# Time Calculation vs iEventTimer

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.

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.

## The numbers

| Metric | Time Calculation | iEventTimer |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/time-calculation/id1449412502/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/ieventtimer/id1570311911/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 0 MB | 6 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [Anian Schleyer](https://appshunter.io/developer/1570311913) |

## What reviewers say

### Time Calculation

[App page](https://appshunter.io/ios/app/time-calculation/id1449412502)

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.

**Highlights:** Add and subtract hours and minutes, Automatic minute rounding, Copy calculation results, View calculation history, Formula input navigation, Delete formula history

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### iEventTimer

[App page](https://appshunter.io/ios/app/ieventtimer/id1570311911)

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.

**Highlights:** 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

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Time Calculation free?

Time Calculation costs $1.99, with no in-app purchases.

### Is iEventTimer free?

iEventTimer costs $0.99, with no in-app purchases.

### Which has better reviews, Time Calculation or iEventTimer?

iEventTimer is rated higher. Time Calculation averages 2.0 out of 5 from 1 ratings, while iEventTimer averages 4.4 from 5 ratings.

### Do Time Calculation or iEventTimer have ads?

Neither Time Calculation nor iEventTimer shows ads.

### Which is updated more often, Time Calculation or iEventTimer?

Time Calculation ships an update every 42 months, and iEventTimer every 5 weeks. Most recently, Time Calculation was updated on November 2, 2026 and iEventTimer on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*