# Luma vs cal

The clearest difference is in-app purchases: cal at none against Luma's 2. Luma's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.4). On price, update cadence and ads there is nothing between them.

Both are free to download. Luma sells 2 in-app purchases, starting at $3.99 per 7 days. cal asks for nothing beyond the download.

Luma ships an update weekly, cal every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Luma | cal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cal-diary/id6766692881/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | — | Free |
| Size | 52 MB | 1 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marc Servais](https://appshunter.io/developer/1700517108) | [Begimay Ahmatova](https://appshunter.io/developer/1896315951) |

## What reviewers say

### Luma

[App page](https://appshunter.io/ios/app/luma-adhd-body-doubling-timer/id6753901532)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly plan | $3.99 | per 7 days |
| Yearly plan | $24.99 | per year |


### cal

[App page](https://appshunter.io/ios/app/cal-diary/id6766692881)

Capture and revisit your daily memories with photos and notes. This app presents your month as a visual calendar, allowing you to easily view past moments. Your data remains private and stored solely on your device.

**Highlights:** Add photos to any day, Jot down notes for each entry, View month as a photo calendar, Full-screen view of daily memories, Export entries for sharing, Private, on-device storage

**In-app purchases:** none


## Frequently asked questions

### Is Luma free?

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

### Is cal free?

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

### Do Luma or cal have ads?

Neither Luma nor cal shows ads.

### Which is updated more often, Luma or cal?

Luma ships an update weekly, and cal every 10 days. Most recently, Luma was updated on October 24, 2026 and cal on October 24, 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.*