Repeat Timer vs コラッツ計算機|数列シミュレーター
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Repeat Timer
This app provides versatile timer options for repeating tasks, intervals, or standard countdowns. It offers multiple timers simultaneously and integrates with Apple Watch and home screen widgets for convenient control. Alerts are designed to be reliable, even with silent mode enabled.
- Multiple timer types (Repeat, Interval, Standard)
- Run several timers simultaneously
- Apple Watch app and complications
- Lock screen alarms and notifications
- Home and lock screen widgets
- Siri and Shortcuts support
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Set a duration, set how many times it repeats, and Repeat Timer counts you through it. Leave the app open to watch the countdown, or close it and get an alert on every repeat. THREE KINDS OF TIMER - Repeat: one duration, looped as many times as you like, or forever - Interval: different phases in sequence, each with its own length and colour - Standard: a plain countdown RUN SEVERAL AT ONCE Keep a timer for every job and run as many as you need at the same time. Each one keeps its own count, its own sounds and its own alerts. ON YOUR WRIST - A full Apple Watch app. All three kinds of timer live on your watch, so you can start, pause and finish a session with your phone nowhere near you - Watch face complications with a live progress gauge ALERTS THAT GET THROUGH - Lock Screen alarms that get through silent mode and a locked phone - Notifications on every repeat, so you can get on with something else - Pick the sound for each repeat and a different one for the finish - Play the finish sound once, for 5, 10 or 30 seconds, or until you stop it - Vibration and haptics, on or off MADE FOR INTERVALS - Start Delay and Finish Delay, to get into position before the first phase and wind down after the last - A countdown of beeps over the last seconds of each phase, so you are never caught out - Confirmation mode: the next repeat will not start until you acknowledge the last one, so nothing gets skipped while you are not looking AND MORE - Home Screen and Lock Screen widgets you can start, pause and skip without opening the app - A full screen timer for when you want nothing else on the display - Keep the screen awake while a timer runs - Timer cards that flip over to reveal their settings - Siri and Shortcuts support - iPhone and iPad PERFECT FOR - Cooking, when something needs turning every few minutes - Standing up and stretching at work - Drinking water through the day - Focus blocks and pomodoro sessions, with planned breaks - Physiotherapy sets and holds - Looking away from the screen every twenty minutes - Medication on a schedule REPEAT TIMER PREMIUM One timer that does everything is free. Premium adds: - Unlimited timers - Every alert sound - No ads Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
コラッツ計算機|数列シミュレーター
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コラッツ予想をシンプルに体験できる計算アプリです。 任意の自然数を入力するだけで、数列の変化を自動で計算し、わかりやすく表示します。 ■ 主な機能 ・コラッツ予想の自動計算 ・計算過程の一覧表示 ・ステップ数・最大値の表示 ・履歴保存機能(過去の計算をすぐ確認) ・計算負荷が高い場合の自動停止機能 ■ プレミアム機能 ・広告の非表示 ・計算結果のグラフ表示 ■ こんな方におすすめ ・数学や数列が好きな方 ・コラッツ予想に興味がある方 ・シンプルな計算ツールを探している方 直感的な操作で、誰でも簡単にコラッツ予想の世界を体験できます。
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 November 7, 2026 and November 5, 2026 respectively.
| Parameter | Repeat Timer | コラッツ計算機|数列シミュレーター |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (559 ratings) — better | — |
| Positive reviews | 46.1% of reviews | — |
| Number of ratings | 559 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 89 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Foobar Creative | Kenji Yanase |
Bugs and requests
Repeat Timer
Reported bugs
3 issues- Timers not working consistently in background
- Apple Watch integration issues
- Inconsistent behavior when setting longer timer durations
Requested features
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Repeat Timer
- Repeat Timer Premium Monthly$1.991 Month
- Repeat Timer Premium Weekly$1.997 Days
- Repeat Timer Premium Annual7 Days trial$14.991 Year
- Premium Upgrade$49.99
コラッツ計算機|数列シミュレーター
- プレミアム$0.49
Questions
Is Repeat Timer free?
Is コラッツ計算機|数列シミュレーター free?
Do Repeat Timer or コラッツ計算機|数列シミュレーター have 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?
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