# KALKUL vs Calmae

The clearest difference is in-app purchases: KALKUL at none against Calmae's 2. KALKUL also leads on update cadence (every 6 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calmae sells 2 in-app purchases, starting at $4.99 per month. KALKUL asks for nothing beyond the download.

KALKUL ships an update every 6 days, Calmae every 6 weeks. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | KALKUL | Calmae |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Size | 71 MB | 52 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kalkul Inc.](https://appshunter.io/developer/1357921921) | [Robin Richard R](https://appshunter.io/developer/1858592674) |

## What reviewers say

### KALKUL

[App page](https://appshunter.io/ios/app/kalkul/id6636494668)

**In-app purchases:** none


### Calmae

[App page](https://appshunter.io/ios/app/calmae/id6756880435)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calmae Plus Monthly | $4.99 | per month |
| Calmae Plus Annual | $44.99 | per year |


## Frequently asked questions

### Is KALKUL free?

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

### Is Calmae free?

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

### Do KALKUL or Calmae have ads?

Neither KALKUL nor Calmae shows ads.

### Which is updated more often, KALKUL or Calmae?

KALKUL ships an update every 6 days, and Calmae every 6 weeks. Most recently, KALKUL was updated on October 18, 2026 and Calmae on October 15, 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.*