# cal vs Ullam

The clearest difference is in-app purchases: cal at none against Ullam's 3. Ullam's advantage is device support (3 vs 1) and iOS requirement (18.0 vs 26.4). On price, update cadence and ads there is nothing between them.

Both are free to download. Ullam sells 3 in-app purchases, starting at $1.99 per month. cal asks for nothing beyond the download.

cal ships an update every 10 days, Ullam fortnightly. Both last shipped on November 5, 2026.

## The numbers

| Metric | cal | Ullam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cal-diary/id6766692881/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | 26.4 | **18.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Begimay Ahmatova](https://appshunter.io/developer/1896315951) | [Kaspar Works, LLC](https://appshunter.io/developer/6776832950) |

## What reviewers say

### 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


### Ullam

[App page](https://appshunter.io/ios/app/ullam-private-diary-and-journal/id6776832948)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ullam Premium | $1.99 | per month |
| Ullam Premium | $14.99 | per year |
| Ullam Premium Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is cal free?

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

### Is Ullam free?

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

### Do cal or Ullam have ads?

Neither cal nor Ullam shows ads.

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

cal ships an update every 10 days, and Ullam fortnightly. Most recently, cal was updated on November 5, 2026 and Ullam on November 5, 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.*