# Marble vs SOL

The clearest difference is in-app purchases: SOL at none against Marble's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Marble sells 3 in-app purchases, starting at $1.99 per month. SOL asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Marble | SOL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/marble-intermittent-fasting/id6477356664/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Freemium | — |
| Size | 280 MB | 6 MB |
| Requires iOS | 17.2 | **16** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Maksim Vakarchuk](https://appshunter.io/developer/1504357263) | [Danny Linsner](https://appshunter.io/developer/1888416267) |

## What reviewers say

### Marble

[App page](https://appshunter.io/ios/app/marble-intermittent-fasting/id6477356664)

This app helps you track intermittent fasting with personalized schedules and timers. It offers home screen widgets for easy monitoring and prioritizes user privacy by syncing data via iCloud without collection.

**Highlights:** Personalized fasting schedules, Next fast timer, Home screen widgets, iCloud data sync, No data collection, Ad-free experience

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $14.99 | per year |
| Lifetime | $24.99 | one-time |


### SOL

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

**In-app purchases:** none


## Frequently asked questions

### Is Marble free?

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

### Is SOL free?

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

### Do Marble or SOL have ads?

Neither Marble nor SOL shows ads.

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

Marble ships an update fortnightly, and SOL fortnightly. Most recently, Marble was updated on September 8, 2026 and SOL on September 22, 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.*