# OneQuestion vs cal

The clearest difference is in-app purchases: cal at none against OneQuestion's 3. OneQuestion's advantage is iOS requirement (16.6 vs 26.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OneQuestion sells 3 in-app purchases, starting at $1.99 per 7 days. cal asks for nothing beyond the download.

OneQuestion ships an update every 5 days, cal every 10 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OneQuestion | 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 | **Every 5 days** | Every 10 days |
| Monetization | — | Free |
| Size | 28 MB | 1 MB |
| Requires iOS | **16.6** | 26.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Solion Labs Limited](https://appshunter.io/developer/1877153551) | [Begimay Ahmatova](https://appshunter.io/developer/1896315951) |

## What reviewers say

### OneQuestion

[App page](https://appshunter.io/ios/app/onequestion-daily-reflection/id6759172822)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Daily Reflection Premium | $1.99 | per 7 days |
| Daily Reflection Premium | $4.99 | per month |
| Daily Reflection Premium | $29.99 | 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 OneQuestion free?

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

### Is cal free?

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

### Do OneQuestion or cal have ads?

Neither OneQuestion nor cal shows ads.

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

OneQuestion ships an update every 5 days, and cal every 10 days. Most recently, OneQuestion was updated on October 12, 2026 and cal on October 10, 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.*