# Fasting Clock vs Hollow

The clearest difference is in-app purchases: Fasting Clock at none against Hollow's 2. Fasting Clock also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). On price and device support there is nothing between them.

Both are free to download. Hollow sells 2 in-app purchases, starting at $1.99 per 7 days. Fasting Clock asks for nothing beyond the download.

## The numbers

| Metric | Fasting Clock | Hollow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | — |
| Size | 34 MB | 57 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [anna kim](https://appshunter.io/developer/1895527781) | [Studio Solum](https://appshunter.io/developer/1807647357) |

## What reviewers say

### Fasting Clock

[App page](https://appshunter.io/ios/app/fasting-clock-if/id6763856247)

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

**In-app purchases:** none


### Hollow

[App page](https://appshunter.io/ios/app/hollow/id6797871670)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hollow Pro Weekly | $1.99 | per 7 days |
| Hollow Pro Annual | $17.99 | per year |


## Frequently asked questions

### Is Fasting Clock free?

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

### Is Hollow free?

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

### Do Fasting Clock or Hollow have ads?

Hollow shows ads; Fasting Clock does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*