# DoMemo vs iThinkAir

DoMemo and iThinkAir are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. DoMemo sells 4 in-app purchases, starting at $0.99 per month and iThinkAir sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

DoMemo ships an update every 3 weeks, iThinkAir monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | DoMemo | iThinkAir |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (10 ratings)](https://appshunter.io/ios/app/domemo-simple-notes-system/id1624344916/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Freemium | — |
| Size | 59 MB | 79 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Quanduan Technology Co., Ltd.](https://appshunter.io/developer/1483142209) | [燕锋 林](https://appshunter.io/developer/691726316) |

## What reviewers say

### DoMemo

[App page](https://appshunter.io/ios/app/domemo-simple-notes-system/id1624344916)

This app offers a balanced approach to note-taking, combining the depth of notes with the brevity of memos. It allows for rich management with tags, backward links, and version history, all while keeping a focus on stress-free writing within a customizable word limit. Data is stored locally and can be synced via iCloud Drive or Git.

**Highlights:** Local data storage, Full text search, History versions, Voice recording & text conversion, iCloud Drive & Git sync, Customizable word limit, Tags and backward links

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DoMemo Monthly | $0.99 | per month |
| DoMemo Yearly | $5.49 | per year |
| DoMemo Flash Sale | $17.00 | one-time |
| DoMemo Lifetime | $19.99 | one-time |


### iThinkAir

[App page](https://appshunter.io/ios/app/ithinkair-aiai/id1633024639)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员年费 | $59.99 | one-time |
| 超级会员年费 | $94.99 | one-time |


## Frequently asked questions

### Is DoMemo free?

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

### Is iThinkAir free?

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

### Do DoMemo or iThinkAir have ads?

Neither DoMemo nor iThinkAir shows ads.

### Which is updated more often, DoMemo or iThinkAir?

DoMemo ships an update every 3 weeks, and iThinkAir monthly. Most recently, DoMemo was updated on October 25, 2026 and iThinkAir on October 25, 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.*