# Fill vs Bathyal

The clearest difference is update cadence: Fill at daily against Bathyal's every 10 days. Bathyal's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Fill sells 3 one-off in-app purchases and Bathyal sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Fill ships an update daily, Bathyal every 10 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fill | Bathyal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 10 days |
| Size | 25 MB | 4 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Cheng Hung Lo](https://appshunter.io/developer/1896510744) | [Stephen Zinn](https://appshunter.io/developer/1883747143) |

## What reviewers say

### Fill

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

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

**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 |


### Bathyal

[App page](https://appshunter.io/ios/app/bathyal-spiral-water-clock/id6779757057)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip Small | $1.99 | one-time |
| Drop: The Benefactor's Drop | $2.99 | one-time |
| Large: A Current | $9.99 | one-time |


## Frequently asked questions

### Is Fill free?

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

### Is Bathyal free?

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

### Do Fill or Bathyal have ads?

Neither Fill nor Bathyal shows ads.

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

Fill ships an update daily, and Bathyal every 10 days. Most recently, Fill was updated on October 28, 2026 and Bathyal on October 31, 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.*