# Hourglass vs Fill

The clearest difference is in-app purchases: Hourglass at none against Fill's 3. Fill's advantage is ads (none vs shown) and update cadence (daily vs every 4 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Fill sells 3 one-off in-app purchases. Hourglass asks for nothing beyond the download.

Hourglass ships an update every 4 days, Fill daily. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Hourglass | Fill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Daily** |
| Size | 33 MB | 26 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kenji abe](https://appshunter.io/developer/1461779902) | [Cheng Hung Lo](https://appshunter.io/developer/1896510744) |

## What reviewers say

### Hourglass

[App page](https://appshunter.io/ios/app/hourglass-physics-simulation/id6670490622)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fill

[App page](https://appshunter.io/ios/app/fill-timer/id6767813234)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Premium Scenes | $1.99 | one-time |
| Bundle Package | $2.99 | one-time |


## Frequently asked questions

### Is Hourglass free?

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

### Is Fill free?

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

### Do Hourglass or Fill have ads?

Hourglass shows ads; Fill does not.

### Which is updated more often, Hourglass or Fill?

Hourglass ships an update every 4 days, and Fill daily. Most recently, Hourglass was updated on September 15, 2026 and Fill on September 24, 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.*