# Keyoku vs uFlash

The clearest difference is iOS requirement: uFlash at 17.0 against Keyoku's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Keyoku sells 2 in-app purchases, starting at $4.99 per month and uFlash sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Keyoku ships an update every 2 weeks, uFlash weekly. The most recent releases landed on September 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Keyoku | uFlash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyoku/id6759081180/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 24 MB | 7 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Martin](https://appshunter.io/developer/1581057549) | [Aaron Fenker](https://appshunter.io/developer/6788580812) |

## What reviewers say

### Keyoku

[App page](https://appshunter.io/ios/app/keyoku/id6759081180)

Transform your notes and PDFs into interactive flashcards using on-device AI. Organize your study materials into colorful decks, track your progress visually, and build consistent study habits with daily streaks. Ideal for students and professionals preparing for exams or learning new subjects.

**Highlights:** AI-generated flashcards from notes/PDFs, Organize decks with custom colors and images, Visual progress tracking, Daily study streak building, Cloud sync across devices, Home screen widgets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $34.99 | per year |


### uFlash

[App page](https://appshunter.io/ios/app/uflash/id6788580810)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donut Tip | $1.99 | one-time |
| Beer Tip | $4.99 | one-time |
| uFlash Pro | $9.99 | one-time |
| Burger Tip | $9.99 | one-time |


## Frequently asked questions

### Is Keyoku free?

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

### Is uFlash free?

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

### Do Keyoku or uFlash have ads?

Neither Keyoku nor uFlash shows ads.

### Which is updated more often, Keyoku or uFlash?

Keyoku ships an update every 2 weeks, and uFlash weekly. Most recently, Keyoku was updated on September 30, 2026 and uFlash on October 28, 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.*