# SOL vs CoreFast

The clearest difference is in-app purchases: CoreFast at none against SOL's 3. CoreFast also leads on update cadence (daily 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. CoreFast asks for nothing beyond the download.

SOL ships an update fortnightly, CoreFast daily. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SOL | CoreFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/corefast-intermittent-fasting/id6814694953/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | — | Free |
| Size | 7 MB | 55 MB |
| Requires iOS | **16** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Danny Linsner](https://appshunter.io/developer/1888416267) | [SATISH CHANDRA KOLLI](https://appshunter.io/developer/6814694955) |

## 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 |


### CoreFast

[App page](https://appshunter.io/ios/app/corefast-intermittent-fasting/id6814694953)

This app helps you track intermittent fasting with customizable plans and a live timer. It offers optional food and water logging, and can integrate with health data. Features include reminders, streaks, and social challenges, all while prioritizing user privacy.

**Highlights:** Customizable intermittent fasting plans, Live accurate timer, Optional food and water logging, Apple Health integration for readings, Privacy-focused, data stays on device, Widgets and Apple Watch app support

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

**In-app purchases:** none


## Frequently asked questions

### Is SOL free?

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

### Is CoreFast free?

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

### Do SOL or CoreFast have ads?

Neither SOL nor CoreFast shows ads.

### Which is updated more often, SOL or CoreFast?

SOL ships an update fortnightly, and CoreFast daily. Most recently, SOL was updated on October 24, 2026 and CoreFast 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.*