# Interval Workout Fitness Timer — Let's do training everyday!

> Interval timer for strength, interval, and trunk training with customizable options. (iPhone/iPad app by Yudai Fukuda.)

- Source: https://appshunter.io/ios/app/interval-workout-fitness-timer/id1173257343 (this page in markdown: same URL + `.md`)
- Developer: [Yudai Fukuda](https://appshunter.io/developer/1434814836)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 24 MB
- Languages: American English, Japanese
- Released: 2016-11-21
- Data updated: 2026-08-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/interval-workout-fitness-timer/id1173257343/reviews.md

## What is Interval Workout Fitness Timer?

Concentrated training with interval timer optimized for training!

It can be used for strength training, interval training, trunk training, etc.

Functions essential to the training timer, such as voice count, vibration, movement in the background, etc. are complete.

It is also recommended for good people who can customize their name and order by themselves even for simple people with a simple timer.

About
This application is an interval timer optimized for training. There is a simple timer that sets exercise time and break time for the first time and a custom timer that you can customize exercise name and order yourself.

Features

1.Simple timer and customizable timer
The first screen is a simple interval timer that alternates exercise time and break time. There is also a custom timer that you can edit your own exercise.

2. Voice count
When the remaining time becomes 3 seconds, the voice down countdown begins. You can choose from four types of voice.

3. Vibration notification
Vibration notification at the end of the exercise is available. (You can turn it off by setting)

4. Behavior in the background
Processing will continue even when you switch to the background, such as locking with the power button or opening other applications. Voice and vibration of the countdown will also be executed during locking.

5. Animation to know the remaining time
You can see at a glance the percentage of remaining time that decreases as time progresses.

## Key features

- Simple and customizable timers
- Voice countdowns
- Vibration notifications
- Background operation
- Remaining time animation

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/interval-workout-fitness-timer/id1173257343/reviews.md

### 1/5 — 何故いつのまにか有料版に？

*2025-01-05*

ずっと無料版を利用していましたが、急に有料版の表示がされています。 登録などしていないのでキャセルの方法も分かりません。 キャセルするにはどうしたら良いですか？

### 5/5 — ストレッチと腕立てに愛用してます

*2024-06-24*

ずっとコレで。助かってます。タイマーがないと無駄に長くなったりするので時短にも欠かせません。

### 4/5 — とても良いです

*2023-01-10*

カウントアップの設定が可能になれば更にありがたいです！

### 5/5 — これを探してた

*2022-10-12*

余計な手間がかからず、筋トレに集中できる。

### 2/5 — メモリー機能があれば

*2022-04-13*

毎回毎回秒数をセットしなければならないので手間がかかります。 設定した秒数は数何パターンメモリーしておいて欲しいです。

### 3/5 — いい‼︎けれど…

*2021-09-30*

とても使いやすい‼︎毎日使用させていただいてます。
サウンド１８がバグりやすいのを改善していただければな、と思いますぅー

### 5/5 — ぴぴぴ

*2021-06-12*

とてもよいね

### 4/5 — シンプルで、グットです

*2021-06-11*

ストレッチのタイマーに使っています。シンプルで便利です。
あと、練習の回数を設定できるといいです。何回とか、何分間とか。

### 5/5 — 時間制限ないところがいい

*2021-04-28*

瞑想するのに使いやすい

### 5/5 — 使いやすい

*2021-03-28*

シンプルで非常に使いやすい

## Frequently asked questions about Interval Workout Fitness Timer

### What is this app?

This application is an interval timer optimized for training. It offers both a simple timer for setting exercise and break times, and a custom timer where you can personalize exercise names and their order.

### What are the key features of this interval timer?

Key features include simple and customizable timers, voice countdowns with four voice options, vibration notifications, background operation so workouts continue when the screen is locked or other apps are open, and an animation to easily see the remaining time.

### Is this app free to use?

Yes, this application is free to use. It does not have any in-app purchases or advertisements.

### What types of training can I use this app for?

This interval timer is optimized for various training routines, including strength training, general interval training, and trunk training. Its customizable nature makes it suitable for many workout styles.

### Can the timer run while I'm using other apps or when my phone is locked?

Yes, the app supports background operation. This means the timer will continue to run, and voice and vibration notifications will still function, even when you switch to other applications or lock your phone's screen.

## Version history (last 5 releases)

### 4.1 — 2020-04-14

Hello, this update had been forgotten in the previous update, we've added a set of hand-clapping of every second.

Thank you to everyone who pointed out in the review. We hope you will continue to use the interval timer.

### 4.0 — 2020-04-09

・ Dark mode support
・ Change of sound pattern set

### 3.6 — 2019-11-24

Fixed bugs in iOS13

### 3.5 — 2019-10-06

iOS13 support

### 3.4 — 2019-07-24

Bug fix

## Apps similar to Interval Workout Fitness Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Simple Workout Timer](https://appshunter.io/ios/app/simple-workout-timer/id1435461028) | 4.7 (21) | Free | Health & Fitness |
| [Workout Timer - HIIT, Tabata](https://appshunter.io/ios/app/workout-timer-hiit-tabata/id1510485545) | 4.9 (527) | Free | Health & Fitness |
| [Workout Timer - Interval Timer](https://appshunter.io/ios/app/workout-timer-interval-timer/id1580218001) | 4.6 (21) | Free | Health & Fitness |
| [SuperSlowTrainingTimer](https://appshunter.io/ios/app/superslowtrainingtimer/id1611303827) | 3.7 (3) | Free | Health & Fitness |
| [Workoutimer](https://appshunter.io/ios/app/workoutimer/id961404965) | 4.8 (177) | Free | Health & Fitness |
| [Training Timer - Workout Timer](https://appshunter.io/ios/app/training-timer-workout-timer/id1612046083) | — | Free | Health & Fitness |

## More apps by Yudai Fukuda

- [マラソンランナーのための計算機](https://appshunter.io/ios/app/id1048891588)
- [そくめも](https://appshunter.io/ios/app/id1061450565)
- [インターバルタイマーforトレーニング２Lite](https://appshunter.io/ios/app/forlite/id1113531503)
- [インターバルタイマーfotトレーニング](https://appshunter.io/ios/app/fot/id1200296731)
- [トレーニング・フィットネス専用タイマーPro](https://appshunter.io/ios/app/pro/id1222309765)

All apps by Yudai Fukuda: https://appshunter.io/developer/1434814836

## Related topics

[yudai fukuda](https://appshunter.io/ios/topics/yudai-fukuda)

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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 2026-08-16.*