# Hourglass vs Whiskly

The clearest difference is price: Hourglass at Free against Whiskly's $0.99. Hourglass also leads on update cadence (every 4 days vs every 3 months). Whiskly's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Hourglass is free to download; Whiskly costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hourglass ships an update every 4 days, Whiskly every 3 months. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Hourglass | Whiskly |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 months |
| Size | 27 MB | 34 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [kenji abe](https://appshunter.io/developer/1461779902) | [Ari Guðmundsson](https://appshunter.io/developer/1896036374) |

## What reviewers say

### Hourglass

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

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

**In-app purchases:** none


### Whiskly

[App page](https://appshunter.io/ios/app/whiskly/id6765775130)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hourglass free?

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

### Is Whiskly free?

Whiskly costs $0.99, with no in-app purchases.

### Do Hourglass or Whiskly have ads?

Hourglass shows ads; Whiskly does not.

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

Hourglass ships an update every 4 days, and Whiskly every 3 months. Most recently, Hourglass was updated on October 19, 2026 and Whiskly on October 23, 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.*