# Quloq vs Unfog

The clearest difference is update cadence: Unfog at every 2 days against Quloq's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Quloq sells 2 in-app purchases, starting at $9.99 per month 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.

Quloq ships an update every 2 weeks, Unfog every 2 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Quloq | Unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 22 MB | 80 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Bryan Cuevas](https://appshunter.io/developer/1873606654) | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) |

## What reviewers say

### Quloq

[App page](https://appshunter.io/ios/app/quloq-audio-flashcards/id6758558520)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly (Save 50%) | $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 Quloq free?

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

### Is Unfog free?

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

### Do Quloq or Unfog have ads?

Neither Quloq nor Unfog shows ads.

### Which is updated more often, Quloq or Unfog?

Quloq ships an update every 2 weeks, and Unfog every 2 days. Most recently, Quloq was updated on September 9, 2026 and Unfog on September 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*