# 喵喵密码 vs ThinkOnTheFly

The clearest difference is in-app purchases: 喵喵密码 at none against ThinkOnTheFly's 3. 喵喵密码 also leads on iOS requirement (9.0 vs 17.6). ThinkOnTheFly's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. ThinkOnTheFly sells 3 in-app purchases, starting at $0.99 per month. 喵喵密码 asks for nothing beyond the download.

喵喵密码 ships an update every 2 months, ThinkOnTheFly fortnightly. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 喵喵密码 | ThinkOnTheFly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 10 MB | 10 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [颖 陈](https://appshunter.io/developer/1534872314) | [家贺 万](https://appshunter.io/developer/1820076368) |

## What reviewers say

### 喵喵密码

[App page](https://appshunter.io/ios/app/id1534873554)

**Features:** macOS Compatibility

**In-app purchases:** none


### ThinkOnTheFly

[App page](https://appshunter.io/ios/app/thinkonthefly/id6747250744)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | per month |
| Annual Plan | $2.99 | per year |
| Lifetime Access | $5.99 | one-time |


## Frequently asked questions

### Is 喵喵密码 free?

喵喵密码 is free to download, with no in-app purchases.

### Is ThinkOnTheFly free?

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

### Do 喵喵密码 or ThinkOnTheFly have ads?

Neither 喵喵密码 nor ThinkOnTheFly shows ads.

### Which is updated more often, 喵喵密码 or ThinkOnTheFly?

喵喵密码 ships an update every 2 months, and ThinkOnTheFly fortnightly. Most recently, 喵喵密码 was updated on October 25, 2026 and ThinkOnTheFly on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*