# Interval Timer vs Stretch & Mobility

The clearest difference is in-app purchases: Stretch & Mobility at none against Interval Timer's 3. Stretch & Mobility also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $2.99 per month. Stretch & Mobility asks for nothing beyond the download.

Interval Timer ships an update fortnightly, Stretch & Mobility every 4 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Interval Timer | Stretch & Mobility |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (539 ratings)](https://appshunter.io/ios/app/interval-timer-run-walk-hiit/id956283665/reviews)** | — |
| Number of ratings | **539** | — |
| Positive reviews | 21.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 104 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Roma Sosnovsky](https://appshunter.io/developer/956283664) | [MARTIN SAGAT](https://appshunter.io/developer/1811608946) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-run-walk-hiit/id956283665)

This app provides a customizable interval timer for running, sprints, and HIIT workouts. It offers voice and haptic cues, Apple Watch integration, and saves data to Apple Health. Choose from pre-made routines or build your own for focused training.

**Highlights:** Customizable run/walk intervals, Voice and haptic interval cues, Apple Watch control and phone-free workouts, Save sessions to Apple Health, 25+ ready-made running workouts, Build multi-step advanced workouts, Lock Screen and Dynamic Island Live Activities

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Run Pro Monthly | $2.99 | per month |
| Interval Run Pro Annual | $19.99 | per year |
| Full Version | $2.99 | one-time |

**What reviewers like**

- 🚀 Simple and easy to use
- 👍 Customizable intervals
- 🚀 Straightforward app
- 👍 Works as advertised
- 👍 Great for getting back into running

**What reviewers complain about**

- 🔇 No audio prompts when screen is locked
- 🔋 High battery consumption
- 🔒 Limited free version
- 🐛 Inconsistent performance
- 🔇 Voice prompts not loud enough

**Reported bugs**

- Timer resets or freezes during workout
- Prompts not working when phone is locked or in pocket
- Unexpected interval changes or duration changes
- Compatibility issues with music playback

**Requested features**

- Option to pause/resume timer
- Larger time remaining display
- Apple Watch app
- Ability to play audio prompts even with screen off
- More interval options (run/walk/jog)


### Stretch & Mobility

[App page](https://appshunter.io/ios/app/stretch-and-mobility-stepflow/id6747058333)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

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

### Is Stretch & Mobility free?

Stretch & Mobility is free to download, with no in-app purchases.

### Do Interval Timer or Stretch & Mobility have ads?

Neither Interval Timer nor Stretch & Mobility shows ads.

### Which is updated more often, Interval Timer or Stretch & Mobility?

Interval Timer ships an update fortnightly, and Stretch & Mobility every 4 days. Most recently, Interval Timer was updated on November 6, 2026 and Stretch & Mobility on November 5, 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.*