# SOL vs The Fast

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

Both are free to download. SOL sells 3 one-off in-app purchases. The Fast asks for nothing beyond the download.

SOL ships an update fortnightly, The Fast every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SOL | The Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/the-fast-fasting-timer/id6813492448/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Free |
| Size | 7 MB | 31 MB |
| Requires iOS | **16** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Danny Linsner](https://appshunter.io/developer/1888416267) | [Prime Adventure LLC](https://appshunter.io/developer/6803535656) |

## What reviewers say

### SOL

[App page](https://appshunter.io/ios/app/sol-fasting-timer-and-tracker/id6761254200)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Seedling Tip | $1.99 | one-time |
| Sapling Tip | $3.99 | one-time |
| Pine Tip | $8.99 | one-time |


### The Fast

[App page](https://appshunter.io/ios/app/the-fast-fasting-timer/id6813492448)

Track your fasting periods with a visual timer and home screen widgets. Review your history in a calendar and share your progress as an image. Use the app without an account for local data storage, or sign in to sync across devices.

**Highlights:** Visual fasting timer, Home screen widgets, Fasting history calendar, Shareable progress images, Account-free operation, Cross-device sync

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

**In-app purchases:** none


## Frequently asked questions

### Is SOL free?

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

### Is The Fast free?

The Fast is free to download, with no in-app purchases.

### Do SOL or The Fast have ads?

Neither SOL nor The Fast shows ads.

### Which is updated more often, SOL or The Fast?

SOL ships an update fortnightly, and The Fast every 3 days. Most recently, SOL was updated on October 24, 2026 and The Fast on October 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.*