# Zen Bell Timer vs Serial Countdown Timer

The clearest difference is iOS requirement: Zen Bell Timer at 13.0 against Serial Countdown Timer's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Zen Bell Timer sells 3 in-app purchases, starting at $1.00 per month and Serial Countdown Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Zen Bell Timer | Serial Countdown Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 68 MB | 10 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KOIZUMI SEISAKUSHO, K.K.](https://appshunter.io/developer/1758951265) | [Jeevan Nagaraj](https://appshunter.io/developer/1895217006) |

## What reviewers say

### Zen Bell Timer

[App page](https://appshunter.io/ios/app/zen-bell-timer/id6569245688)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Function expansion | $1.00 | per month |
| Function expansion | $5.00 | per 6 months |
| Function expansion | $8.00 | per year |


### Serial Countdown Timer

[App page](https://appshunter.io/ios/app/serial-countdown-timer/id6763911554)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $1.99 | one-time |


## Frequently asked questions

### Is Zen Bell Timer free?

Zen Bell Timer is free to download, with in-app purchases available.

### Is Serial Countdown Timer free?

Serial Countdown Timer is free to download, with in-app purchases available.

### Do Zen Bell Timer or Serial Countdown Timer have ads?

Neither Zen Bell Timer nor Serial Countdown Timer shows ads.

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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.*