# saidosi vs DahongMemo

The clearest difference is iOS requirement: DahongMemo at 18.6 against saidosi's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. saidosi sells 3 in-app purchases, starting at $1.99 per month and DahongMemo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

saidosi ships an update weekly, DahongMemo every 2 weeks. Both last shipped on November 6, 2026.

## The numbers

| Metric | saidosi | DahongMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 29 MB | 8 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ZHIYI LIN](https://appshunter.io/developer/1783163574) | [YoungWon Studio](https://appshunter.io/developer/1890371737) |

## What reviewers say

### saidosi

[App page](https://appshunter.io/ios/app/saidosi-ai-notes/id6790165067)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite | $1.99 | per month |
| Plus | $2.99 | per month |
| Pro | $9.99 | per month |


### DahongMemo

[App page](https://appshunter.io/ios/app/dahongmemo-quick-notes/id6809837747)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Memos | $1.99 | one-time |


## Frequently asked questions

### Is saidosi free?

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

### Is DahongMemo free?

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

### Do saidosi or DahongMemo have ads?

Neither saidosi nor DahongMemo shows ads.

### Which is updated more often, saidosi or DahongMemo?

saidosi ships an update weekly, and DahongMemo every 2 weeks. Most recently, saidosi was updated on November 6, 2026 and DahongMemo on November 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.*