# Soki Active Recall Flashcards vs Unfog

The clearest difference is update cadence: Unfog at every 2 days against Soki Active Recall Flashcards's every 3 weeks. Unfog also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Soki Active Recall Flashcards sells 2 in-app purchases, starting at $9.99 per 7 days and Unfog sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Soki Active Recall Flashcards ships an update every 3 weeks, Unfog every 2 days. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Soki Active Recall Flashcards | Unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 6 MB | 80 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tayson Nguyen](https://appshunter.io/developer/601885498) | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) |

## What reviewers say

### Soki Active Recall Flashcards

[App page](https://appshunter.io/ios/app/soki-active-recall-flashcards/id6754876332)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Soki Pro | $9.99 | per 7 days |
| Soki Pro | $59.99 | per year |


### Unfog

[App page](https://appshunter.io/ios/app/unfog-feynman-study-notes/id6776245365)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unfog weekly | $2.99 | per 7 days |
| Unfog Monthly | $17.99 | per month |
| Unfog Annual | $29.99 | per year |


## Frequently asked questions

### Is Soki Active Recall Flashcards free?

Soki Active Recall Flashcards is free to download, with in-app purchases available.

### Is Unfog free?

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

### Do Soki Active Recall Flashcards or Unfog have ads?

Neither Soki Active Recall Flashcards nor Unfog shows ads.

### Which is updated more often, Soki Active Recall Flashcards or Unfog?

Soki Active Recall Flashcards ships an update every 3 weeks, and Unfog every 2 days. Most recently, Soki Active Recall Flashcards was updated on September 29, 2026 and Unfog on October 1, 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.*