# Gymboss Interval Timer vs Hiitmi HIIT Timer

The clearest difference is review sentiment: Hiitmi HIIT Timer at 100% against Gymboss Interval Timer's 37%. Hiitmi HIIT Timer also leads on in-app purchases (none vs 3) and update cadence (fortnightly vs every 5 weeks). Gymboss Interval Timer's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Gymboss Interval Timer sells 3 in-app purchases, starting at $1.99 per year. Hiitmi HIIT Timer asks for nothing beyond the download.

Gymboss Interval Timer ships an update every 5 weeks, Hiitmi HIIT Timer fortnightly. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Gymboss Interval Timer | Hiitmi HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (797 ratings)](https://appshunter.io/ios/app/gymboss-interval-timer/id500887448/reviews)** | — |
| Number of ratings | **797** | — |
| Positive reviews | 36.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 23 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gymboss LLC](https://appshunter.io/developer/894157662) | [Christian Stocker](https://appshunter.io/developer/1696113508) |

## What reviewers say

### Gymboss Interval Timer

[App page](https://appshunter.io/ios/app/gymboss-interval-timer/id500887448)

This app provides a customizable interval timer for various workouts, allowing users to set single or multiple work and rest periods. It offers extensive customization options for alarms, program saving, and display, ensuring a tailored timing experience for any fitness routine.

**Highlights:** Programmable interval timer, Unlimited intervals and rounds, Save and manage unlimited programs, Visual, audible, and vibrate alarms, Music access and dimming, Customizable display and background

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gymboss Premium Yearly | $1.99 | per year |
| Remove Ads | $0.99 | one-time |
| Sound and Color Bundle | $0.99 | one-time |

**What reviewers like**

- 🚀 Simple yet effective
- 🚀 Perfect gym partner
- 🚀 Grad App
- 🚀 Great
- 🚀 Simple easy to plan and workout

**What reviewers complain about**

- 🐛 Clear data
- 🐛 Glitchy
- 🐛 Another buggy update
- 🐛 Landscape / portrait bugs
- 🐛 Sagging under bugs

**Reported bugs**

- Timer no longer beeps when screen is locked or app is in background
- Intervals disappear or get shuffled after updates
- Unable to save new workouts
- All workout sounds have gone
- Crashes when trying to edit intervals

**Requested features**

- Verbal prompts like a countdown "3-2-1 Go!" and "3-2-1 Rest"
- Ability to lock the screen
- Option to see what's coming next
- Workout block of 60/30/30 rather than just high and low
- Ability to start from partway through the sequence


### Hiitmi HIIT Timer

[App page](https://appshunter.io/ios/app/hiitmi-hiit-timer/id6450996082)

This interval timer app allows users to create and share custom high-intensity interval training (HIIT) workouts. Enjoy training with your favorite music or podcasts, guided by a motivating voice. Track your progress with simple statistics.

**Highlights:** Unlimited custom timer creation, Workout sharing with friends, Music and podcast integration, Motivating voice guidance, Workout statistics tracking, Ad-free experience

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

**In-app purchases:** none


## Frequently asked questions

### Is Gymboss Interval Timer free?

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

### Is Hiitmi HIIT Timer free?

Hiitmi HIIT Timer is free to download, with no in-app purchases.

### Do Gymboss Interval Timer or Hiitmi HIIT Timer have ads?

Neither Gymboss Interval Timer nor Hiitmi HIIT Timer shows ads.

### Which is updated more often, Gymboss Interval Timer or Hiitmi HIIT Timer?

Gymboss Interval Timer ships an update every 5 weeks, and Hiitmi HIIT Timer fortnightly. Most recently, Gymboss Interval Timer was updated on October 14, 2026 and Hiitmi HIIT Timer on September 29, 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.*