# Interval Walking Timer vs FastOn

The clearest difference is in-app purchases: Interval Walking Timer at none against FastOn's 3. Interval Walking Timer also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). FastOn's advantage is update cadence (every 3 days vs every 14 months). On price and device support there is nothing between them.

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

Interval Walking Timer ships an update every 14 months, FastOn every 3 days. The most recent releases landed on October 8, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Interval Walking Timer | FastOn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 1 MB | 30 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Nakagawa](https://appshunter.io/developer/1770410772) | [Masahiro Akebi](https://appshunter.io/developer/1884865177) |

## What reviewers say

### Interval Walking Timer

[App page](https://appshunter.io/ios/app/interval-walking-timer/id6717588783)

This app provides a simple timer for interval fast walking routines, automatically switching between slow and fast walking every 3 minutes. It offers real-time tracking of heart rate, distance, and time, with Apple Watch vibration notifications for mode changes. A summary screen displays post-workout metrics, and users can control music playback directly from the app.

**Highlights:** Interval timer for fast walking, Automatic mode switching (slow/fast walk), Apple Watch vibration notifications, Real-time heart rate, distance, and time display, Post-workout summary with key metrics, Music and podcast playback control

**In-app purchases:** none


### FastOn

[App page](https://appshunter.io/ios/app/faston/id6778654479)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $2.99 | per month |
| Premium (Yearly) | $17.99 | per year |
| Premium (Lifetime) | $22.99 | one-time |


## Frequently asked questions

### Is Interval Walking Timer free?

Interval Walking Timer is free to download, with no in-app purchases.

### Is FastOn free?

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

### Do Interval Walking Timer or FastOn have ads?

FastOn shows ads; Interval Walking Timer does not.

### Which is updated more often, Interval Walking Timer or FastOn?

Interval Walking Timer ships an update every 14 months, and FastOn every 3 days. Most recently, Interval Walking Timer was updated on October 8, 2026 and FastOn on September 21, 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.*