# FlashSnapCards vs KnowUp

The clearest difference is update cadence: KnowUp at every 2 days against FlashSnapCards's fortnightly. KnowUp also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FlashSnapCards sells 1 one-off in-app purchase and KnowUp sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

FlashSnapCards ships an update fortnightly, KnowUp every 2 days. The most recent releases landed on October 28, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | FlashSnapCards | KnowUp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 2 MB | 89 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [torankirite](https://appshunter.io/developer/1883564850) | [Wenfeng Duan](https://appshunter.io/developer/1454244715) |

## What reviewers say

### FlashSnapCards

[App page](https://appshunter.io/ios/app/flashsnapcards-flashcards/id6779014789)

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


### KnowUp

[App page](https://appshunter.io/ios/app/knowup-ai-flashcards-and-study/id6779905080)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| knowup monthly | $2.99 | per month |
| knowup annual | $24.99 | per year |


## Frequently asked questions

### Is FlashSnapCards free?

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

### Is KnowUp free?

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

### Do FlashSnapCards or KnowUp have ads?

Neither FlashSnapCards nor KnowUp shows ads.

### Which is updated more often, FlashSnapCards or KnowUp?

FlashSnapCards ships an update fortnightly, and KnowUp every 2 days. Most recently, FlashSnapCards was updated on October 28, 2026 and KnowUp on October 20, 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.*