# Dr. Ludidi vs Kalmu

The clearest difference is update cadence: Kalmu at weekly against Dr. Ludidi's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Dr. Ludidi sells 7 one-off in-app purchases and Kalmu sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Dr. Ludidi ships an update every 3 months, Kalmu weekly. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Dr. Ludidi | Kalmu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 110 MB | 45 MB |
| Requires iOS | 15.2 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dr. Ludidi bv](https://appshunter.io/developer/1706791303) | [Karlijn Hubers](https://appshunter.io/developer/1875249387) |

## What reviewers say

### Dr. Ludidi

[App page](https://appshunter.io/ios/app/dr-ludidi/id6465896553)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Modern Ancestral Recipes | Free | one-time |
| Banish Bloating | Free | one-time |
| Recepten | Free | one-time |
| Ramadan Lifestyle & Nutrition | Free | one-time |
| 30 Day AM Routine | $17.00 | one-time |
| Movement Maximisation Protocol | $25.00 | one-time |
| Dr. Ludidi's Rhythm Reset | $39.00 | one-time |


### Kalmu

[App page](https://appshunter.io/ios/app/kalmu/id6758850008)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kalmu Premium | $6.99 | per month |
| Kalmu Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is Dr. Ludidi free?

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

### Is Kalmu free?

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

### Do Dr. Ludidi or Kalmu have ads?

Neither Dr. Ludidi nor Kalmu shows ads.

### Which is updated more often, Dr. Ludidi or Kalmu?

Dr. Ludidi ships an update every 3 months, and Kalmu weekly. Most recently, Dr. Ludidi was updated on October 19, 2026 and Kalmu on October 12, 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.*