# インターバルタイマーforトレーニング2 Pro vs Justfit

The clearest difference is price: Justfit at Free against インターバルタイマーforトレーニング2 Pro's $3.99. Justfit also leads on ads (none vs shown) and update cadence (every 3 days vs every 2 months). インターバルタイマーforトレーニング2 Pro's advantage is in-app purchases (none vs 4) and iOS requirement (11.0 vs 15.0). On device support there is nothing between them.

Justfit is free to download; インターバルタイマーforトレーニング2 Pro costs $3.99 up front. Justfit sells 4 in-app purchases, starting at $1.99 per month. インターバルタイマーforトレーニング2 Pro asks for nothing beyond the download.

インターバルタイマーforトレーニング2 Pro ships an update every 2 months, Justfit every 3 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | インターバルタイマーforトレーニング2 Pro | Justfit |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/justfit-boxing-interval-timer/id6449503037/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 29 MB | 105 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Fukuda](https://appshunter.io/developer/1434814836) | [Ferda Nahit Fidanci](https://appshunter.io/developer/1689464732) |

## What reviewers say

### インターバルタイマーforトレーニング2 Pro

[App page](https://appshunter.io/ios/app/for2-pro/id1449228185)

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

**In-app purchases:** none


### Justfit

[App page](https://appshunter.io/ios/app/justfit-boxing-interval-timer/id6449503037)

This app provides customizable interval timers for various activities like HIIT, Tabata, meditation, and studying. Track your progress with detailed history and analytics, and personalize your experience with custom sounds and colors.

**Highlights:** Fully customizable interval timers, Full-screen circular countdown/countup stopwatch, Pre-made templates for HIIT, Tabata, Meditation, Customizable audio for intervals, sets, and rest, Detailed progress tracking and analytics, Timer sharing via export/import, Multilanguage support

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $7.99 | per year |
| Lifetime Access | $3.99 | one-time |
| Lifetime Access | $7.99 | one-time |


## Frequently asked questions

### Is インターバルタイマーforトレーニング2 Pro free?

インターバルタイマーforトレーニング2 Pro costs $3.99, with no in-app purchases.

### Is Justfit free?

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

### Do インターバルタイマーforトレーニング2 Pro or Justfit have ads?

インターバルタイマーforトレーニング2 Pro shows ads; Justfit does not.

### Which is updated more often, インターバルタイマーforトレーニング2 Pro or Justfit?

インターバルタイマーforトレーニング2 Pro ships an update every 2 months, and Justfit every 3 days. Most recently, インターバルタイマーforトレーニング2 Pro was updated on October 12, 2026 and Justfit on October 15, 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.*