# 100 vs Grind Timer

The clearest difference is in-app purchases: 100 at none against Grind Timer's 1. 100 also leads on device support (4 vs 2). Grind Timer's advantage is iOS requirement (12.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Grind Timer sells 1 in-app purchase, starting at $4.99 per month. 100 asks for nothing beyond the download.

## The numbers

| Metric | 100 | Grind Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 1 MB | 110 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch, Vision Pro** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kohei Kanagu](https://appshunter.io/developer/1530720615) | [Yuuki Nagata](https://appshunter.io/developer/1815690758) |

## What reviewers say

### 100

[App page](https://appshunter.io/ios/app/100-hour-rule/id6517349655)

**Features:** macOS Compatibility

**In-app purchases:** none


### Grind Timer

[App page](https://appshunter.io/ios/app/grind-timer/id6746191561)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $4.99 | per month |


## Frequently asked questions

### Is 100 free?

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

### Is Grind Timer free?

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

### Do 100 or Grind Timer have ads?

Neither 100 nor Grind 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.*