# WatchStudy vs JustFlip

The clearest difference is device support: JustFlip at 4 against WatchStudy's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. WatchStudy sells 2 in-app purchases, starting at $4.99 per month and JustFlip sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

WatchStudy ships an update weekly, JustFlip every 5 days. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | WatchStudy | JustFlip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Size | 22 MB | 145 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Watkins](https://appshunter.io/developer/1859256708) | [DANIEL CECH](https://appshunter.io/developer/1896564059) |

## What reviewers say

### WatchStudy

[App page](https://appshunter.io/ios/app/watchstudy-pro-ai-flashcards/id6759179785)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WatchStudy Pro Monthly | $4.99 | per month |
| WatchStudy Pro Annual | $29.99 | per year |


### JustFlip

[App page](https://appshunter.io/ios/app/justflip-flashcards/id6770141421)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JustFlip Pro Monthly | $1.99 | per month |
| JustFlip Pro Yearly | $5.99 | per year |
| JustFlip Pro Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is WatchStudy free?

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

### Is JustFlip free?

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

### Do WatchStudy or JustFlip have ads?

Neither WatchStudy nor JustFlip shows ads.

### Which is updated more often, WatchStudy or JustFlip?

WatchStudy ships an update weekly, and JustFlip every 5 days. Most recently, WatchStudy was updated on October 10, 2026 and JustFlip on October 14, 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.*