# Kasi vs 1RM

The clearest difference is in-app purchases: Kasi at none against 1RM's 1. Kasi also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 1RM sells 1 in-app purchase, starting at $0.99 per 7 days. Kasi asks for nothing beyond the download.

## The numbers

| Metric | Kasi | 1RM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | — |
| Size | 9 MB | 67 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Jon Booth](https://appshunter.io/developer/1700855073) | [ABDULLAH YAVUZ](https://appshunter.io/developer/1724192354) |

## What reviewers say

### Kasi

[App page](https://appshunter.io/ios/app/kasi/id6463846550)

**Features:** macOS Compatibility

**In-app purchases:** none


### 1RM

[App page](https://appshunter.io/ios/app/1rm-one-rep-max-calculator/id6480014506)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1RM Pro | $0.99 | per 7 days |


## Frequently asked questions

### Is Kasi free?

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

### Is 1RM free?

1RM is free to download, with in-app purchases available.

### Do Kasi or 1RM have ads?

1RM shows ads; Kasi does not.

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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.*