# Repeat Timer vs コラッツ計算機｜数列シミュレーター

The clearest difference is update cadence: コラッツ計算機｜数列シミュレーター at weekly against Repeat Timer's monthly. Repeat Timer's advantage is iOS requirement (18.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Repeat Timer sells 4 in-app purchases, starting at $1.99 per month and コラッツ計算機｜数列シミュレーター sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Repeat Timer ships an update monthly, コラッツ計算機｜数列シミュレーター weekly. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Repeat Timer | コラッツ計算機｜数列シミュレーター |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (543 ratings)](https://appshunter.io/ios/app/repeat-timer/id443410415/reviews)** | — |
| Number of ratings | **543** | — |
| Positive reviews | 44.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Subscription | — |
| Size | 89 MB | 5 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Foobar Creative](https://appshunter.io/developer/464777525) | [Kenji Yanase](https://appshunter.io/developer/1865920313) |

## What reviewers say

### Repeat Timer

[App page](https://appshunter.io/ios/app/repeat-timer/id443410415)

This app provides a flexible repeating timer for work and relaxation. Set custom durations and repeat counts, and receive notifications for each cycle. It integrates with widgets, Siri, and Apple Watch for seamless use.

**Highlights:** Customizable duration and repeat count, Background notifications, Home and Lock Screen widgets, Siri and Shortcuts integration, Apple Watch companion app, Quick entry for common timers

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Repeat Timer Premium Monthly | $1.99 | per month |
| Repeat Timer Premium Weekly | $1.99 | per 7 days |
| Repeat Timer Premium Annual | $14.99 | per year |
| Premium Upgrade | $49.99 | one-time |

**What reviewers like**

- 🚀 Excellent repeat timer
- 👍 Simple and easy to use
- 👍 Versatile for various use cases
- 👍 Good notification sounds
- 👍 Helpful for productivity and exercise

**What reviewers complain about**

- 🔒 Limited free version, requires subscription for full features
- 🐛 Notifications/alarms not always reliable
- 🐛 Occasional crashes or freezes
- 🔋 Drains battery when running in background
- 🔒 Lack of customization options in free version

**Reported bugs**

- Timers not working consistently in background
- Apple Watch integration issues
- Inconsistent behavior when setting longer timer durations

**Requested features**

- Ability to set custom intervals (e.g. 8 seconds)
- Option for alternating interval lengths
- Vibration mode for silent notifications
- Ability to pause/resume timers
- More timer sound options


### コラッツ計算機｜数列シミュレーター

[App page](https://appshunter.io/ios/app/id6766773009)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $0.49 | one-time |


## Frequently asked questions

### Is Repeat Timer free?

Repeat Timer is free to download, with in-app purchases available.

### Is コラッツ計算機｜数列シミュレーター free?

コラッツ計算機｜数列シミュレーター is free to download, with in-app purchases available.

### Do Repeat Timer or コラッツ計算機｜数列シミュレーター have ads?

Both Repeat Timer and コラッツ計算機｜数列シミュレーター show ads.

### Which is updated more often, Repeat Timer or コラッツ計算機｜数列シミュレーター?

Repeat Timer ships an update monthly, and コラッツ計算機｜数列シミュレーター weekly. Most recently, Repeat Timer was updated on October 12, 2026 and コラッツ計算機｜数列シミュレーター on October 8, 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.*