# Synapsi vs uFlash

The clearest difference is in-app purchases: Synapsi at none against uFlash's 4. Synapsi also leads on update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. uFlash sells 4 one-off in-app purchases. Synapsi asks for nothing beyond the download.

Synapsi ships an update daily, uFlash weekly. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Synapsi | uFlash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Size | 45 MB | 7 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Khoa Tran](https://appshunter.io/developer/1523512472) | [Aaron Fenker](https://appshunter.io/developer/6788580812) |

## What reviewers say

### Synapsi

[App page](https://appshunter.io/ios/app/synapsi-ai-study-notes/id6780159251)

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Synapsi free?

Synapsi is free to download, with no in-app purchases.

### Is uFlash free?

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

### Do Synapsi or uFlash have ads?

Neither Synapsi nor uFlash shows ads.

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

Synapsi ships an update daily, and uFlash weekly. Most recently, Synapsi was updated on September 29, 2026 and uFlash on October 5, 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.*