# TimerNinja vs FuelSync (FS)

The clearest difference is in-app purchases: FuelSync (FS) at none against TimerNinja's 4. FuelSync (FS) also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (17.0 vs 26.0). TimerNinja's advantage is device support (6 vs 2). On price and ads there is nothing between them.

Both are free to download. TimerNinja sells 4 in-app purchases, starting at $2.99 per month. FuelSync (FS) asks for nothing beyond the download.

TimerNinja ships an update every 3 weeks, FuelSync (FS) every 2 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | TimerNinja | FuelSync (FS) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/timerninja-activity-timers/id1591804917/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 16 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Heftii, Inc.](https://appshunter.io/developer/1588613002) | [Indie Studio](https://appshunter.io/developer/1852003485) |

## What reviewers say

### TimerNinja

[App page](https://appshunter.io/ios/app/timerninja-activity-timers/id1591804917)

Track time for workouts and productivity with versatile timer options. Supports Apple Watch integration, Apple Health recording, and SharePlay for synchronized challenges with friends. Offers customizable themes and multiple timer types.

**Highlights:** Multiple timer types (Stopwatch, Countdown, Intervals, EMOM, Pomodoro), Apple Watch standalone app and remote control, Record workouts to Apple Health, SharePlay for synchronized workouts with friends, Customizable dark and light themes, Standalone Apple Watch app

**Features:** Family Sharing, Apple Watch app, SharePlay

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TimerNinja+ Monthly | $2.99 | per month |
| TimerNinja+ Family Monthly | $3.99 | per month |
| TimerNinja+ Yearly | $9.99 | per year |
| TimerNinja+ Family Yearly | $14.99 | per year |


### FuelSync (FS)

[App page](https://appshunter.io/ios/app/fuelsync-fs/id6756882513)

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

**In-app purchases:** none


## Frequently asked questions

### Is TimerNinja free?

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

### Is FuelSync (FS) free?

FuelSync (FS) is free to download, with no in-app purchases.

### Do TimerNinja or FuelSync (FS) have ads?

Neither TimerNinja nor FuelSync (FS) shows ads.

### Which is updated more often, TimerNinja or FuelSync (FS)?

TimerNinja ships an update every 3 weeks, and FuelSync (FS) every 2 days. Most recently, TimerNinja was updated on October 24, 2026 and FuelSync (FS) on October 12, 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.*