# Unfog vs Flashy

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

Both are free to download. Unfog sells 3 in-app purchases, starting at $2.99 per 7 days and Flashy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Unfog ships an update every 2 days, Flashy monthly. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Unfog | Flashy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flashy-simple-flashcards/id6788429683/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 80 MB | 93 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) | [Argon Labs LLC](https://appshunter.io/developer/1886786496) |

## What reviewers say

### 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 |


### Flashy

[App page](https://appshunter.io/ios/app/flashy-simple-flashcards/id6788429683)

This app uses a modern spaced repetition algorithm to help you memorize information efficiently. It offers a free tier with limited cards and a one-time purchase for unlimited access, with no subscriptions or ads. Study vocabulary, exam facts, and more with offline functionality and image support.

**Highlights:** FSRS spaced repetition algorithm, One-time purchase for unlimited cards, Offline functionality, Image support on cards, Import Anki and CSV decks, Tagging for organization, Four-grade review system

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flashy Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is Unfog free?

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

### Is Flashy free?

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

### Do Unfog or Flashy have ads?

Neither Unfog nor Flashy shows ads.

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

Unfog ships an update every 2 days, and Flashy monthly. Most recently, Unfog was updated on October 1, 2026 and Flashy on October 6, 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.*