# Interval Timer Calendar — track workout with calendar

> Muscle training timer and workout logger with calendar integration. (iPhone/iPad app by isao utsumi.)

- Source: https://appshunter.io/ios/app/interval-timer-calendar/id1507102637 (this page in markdown: same URL + `.md`)
- Developer: [isao utsumi](https://appshunter.io/developer/800652888)
- Category: Sports, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 14 MB
- Languages: American English, Japanese
- Released: 2020-04-09
- Data updated: 2026-08-26
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/interval-timer-calendar/id1507102637/reviews.md

## What is Interval Timer Calendar?

It is a simple muscle training timer application that can perform timer and recording at the same time.

You can start the timer as soon as you set the number of sets, training time, and break time.
After the timer expires, it is automatically recorded on the calendar.

If you save in the timer list in advance such as daily training, muscle training, stretching, you can always start the timer with one tap.
It is automatically saved in the calendar so you can review the training content and number of times later.
Because it supports the background, you can use it while listening to videos and music, and you will be notified by notification.

[App Features]
When using the timer, you will be notified by notification even if you do not open the app.
If you write down and save the number of reps in the timer list, you can use it as a simple muscle training record.
You can review past timer records on the calendar.
You can use it while listening to music.

If you like the app, I would be grateful if you could review it.
Developers have read your reviews and are motivated!

## Key features

- Muscle training timer
- Automatic calendar recording
- Save custom timer lists
- Background operation support
- Notification alerts
- Workout review on calendar

## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/interval-timer-calendar/id1507102637/reviews.md

### 4/5 — 自動記録は便利

*2026-06-14*

名前やセット数、色とかを任意に設定保存しておけば、それをタップしてトレーニングをスタートし、休憩時間まで完了すれば自動でカレンダーに同期される。使い方が分かれば便利だと思う。

### 5/5 — 記録するのに重宝してます

*2025-02-10*

セットも簡単。便利です。

### 4/5 — お願い

*2022-09-30*

カレンダーへの反映が正常に行われない（名前がタイマーに変わる）ケースがあるので、カレンダー側の編集、削除かできるようにしてほしい

### 4/5 — ヘルスケアとの連動をお願いします

*2022-06-14*

タイマーはとても使いやすく同時に記録もしてくれるので助かります。お陰様でジムでの筋トレのモチベーションも上がりお気に入りなのですが、欲を言えばAppleのヘルスケアと連動してもらえたら最高です！
こちらのアプリへは体重、体脂肪、BMIなど‥また、ヘルスケアではワークアウト、アクティブエネルギーへの連動を。
ぜひ、よろしくお願いしますm(_ _)m

### 4/5 — 良いですが欲を言えば

*2022-01-06*

筋カレンダーと同期できて記録できると嬉しいです。

### 2/5 — 音の大きさが不安定

*2021-11-21*

機能としては必要十分ですがアラームの音の大きさが小さかったり大きすぎたりと不安定なのが困ります

### 3/5 — タイマー

*2021-10-24*

筋肉カレンダーと連携できるようしてほしい

### 4/5 — 体重の記録機能を増やして欲しい！！

*2021-07-09*

これさえあれば完璧

### 2/5 — リストが

*2021-03-21*

リストも作れて自動でカレンダーに記録してくれてすごくいいのに、タイマーリストをトレーニング順にしているのに記録すると順番が変わってしまうのがとても残念です。

### 3/5 — あと一歩

*2020-07-08*

アラームが小さい所とドラクエウォークなど他のアプリをやっている時にもタイマーが動いてて欲しいです。

**Developer response:** 通知の許可をオンにすると他のアプリ立ち上げ時は通知でお知らせします。ご利用下さい。

## Frequently asked questions about Interval Timer Calendar

### Does Interval Timer Calendar have ads?

Yes, Interval Timer Calendar contains advertisements. These ads help support the development of the app.

### What devices is Interval Timer Calendar available on?

Interval Timer Calendar is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Interval Timer Calendar updated?

The latest version is 1.0.6, last updated on March 24, 2021. Update frequency can vary based on developer priorities.

### Can I use Interval Timer Calendar offline?

The description states it supports background operation and notifications, suggesting it can function without an active internet connection for its core timer and logging features.

### What is the age rating for Interval Timer Calendar?

Interval Timer Calendar has an age rating of 4+. This indicates it is suitable for a wide range of users.

### How does Interval Timer Calendar record workouts?

Workouts are automatically recorded on the calendar after the timer expires. You can also save custom timers and log reps for a simple training record.

### Can I listen to music while using Interval Timer Calendar?

Yes, the app supports background operation, allowing you to use it while listening to music or videos.

## Version history (last 5 releases)

### 1.0.6 — 2021-03-24

Update internal systems.

### 1.0.5 — 2020-04-30

Added background usage before using timer.

### 1.0.4 — 2020-04-18

Fix not to go to sleep mode while using the timer

### 1.0.3 — 2020-04-17

Implemented the preparation time function. You can change the time from the setting screen.
Implemented so that the number can be seen when the number of daily training displayed on the calendar is 6 or more.

### 1.0.2 — 2020-04-13

GDPR compliant.
Implementation of countdown sound. You can turn it on or off in the settings.

## Apps similar to Interval Timer Calendar

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Fitness Timer \| Tabata Workout](https://appshunter.io/ios/app/fitness-timer-tabata-workout/id1606070677) | — | Free | Sports |
| [筋トレ応援！イケメンボイスタイマーforトレーニング](https://appshunter.io/ios/app/for/id1502801317) | — | Free | Sports |
| [Universal Training Timer](https://appshunter.io/ios/app/universal-training-timer/id1031363950) | 4.0 (6) | Free | Sports |
| [HIIT Timer / Interval Timer](https://appshunter.io/ios/app/hiit-timer-interval-timer/id1610842683) | 4.9 (14) | Free | Sports |
| [Exercise Records](https://appshunter.io/ios/app/exercise-records/id1619729326) | — | Free | Sports |
| [Lapz: Interval Timer](https://appshunter.io/ios/app/lapz-interval-timer/id1538356714) | 5.0 (1) | Free | Sports |

## More apps by isao utsumi

- [愚痴バブル 匿名でストレス解消・発散つぶやきSNS](https://appshunter.io/ios/app/sns/id883947541)
- [Simple Movie Log](https://appshunter.io/ios/app/simple-movie-log/id1065211313)
- [Fitness Workout Log Calendar](https://appshunter.io/ios/app/fitness-workout-log-calendar/id1440604223)
- [Stella.(ステラ) コスメ・化粧品の管理アプリ](https://appshunter.io/ios/app/stella/id1472003845)
- [匿名つぶやきメッセージ バブルス](https://appshunter.io/ios/app/id1483049544)

All apps by isao utsumi: https://appshunter.io/developer/800652888

## Related topics

[4x4 timer interval training](https://appshunter.io/ios/topics/4x4-timer-interval-training) · [workout timer routine](https://appshunter.io/ios/topics/workout-timer-routine)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*