# Studio Instructor vs interval timer. hiit timer

The clearest difference is in-app purchases: Studio Instructor at none against interval timer. hiit timer's 2. Studio Instructor also leads on iOS requirement (11.0 vs 18.0). interval timer. hiit timer's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. interval timer. hiit timer sells 2 in-app purchases, starting at $1.99 per month. Studio Instructor asks for nothing beyond the download.

Studio Instructor ships an update every 2 months, interval timer. hiit timer every 3 weeks. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Studio Instructor | interval timer. hiit timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 208 MB | 19 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MINDFULNESS ALLIANCE EGITIM VE DANISMANLIK ANONIM SIRKETI](https://appshunter.io/developer/1478841366) | [JOSUA NIKLAS ROCK](https://appshunter.io/developer/1686721446) |

## What reviewers say

### Studio Instructor

[App page](https://appshunter.io/ios/app/studio-instructor/id1479293224)

**Features:** macOS Compatibility

**In-app purchases:** none


### interval timer. hiit timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-timer/id6743938787)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is Studio Instructor free?

Studio Instructor is free to download, with no in-app purchases.

### Is interval timer. hiit timer free?

interval timer. hiit timer is free to download, with in-app purchases available.

### Do Studio Instructor or interval timer. hiit timer have ads?

Neither Studio Instructor nor interval timer. hiit timer shows ads.

### Which is updated more often, Studio Instructor or interval timer. hiit timer?

Studio Instructor ships an update every 2 months, and interval timer. hiit timer every 3 weeks. Most recently, Studio Instructor was updated on September 18, 2026 and interval timer. hiit timer on September 20, 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.*