# Zero Password vs NinTodo

The clearest difference is in-app purchases: Zero Password at none against NinTodo's 1. NinTodo's advantage is update cadence (every 3 days vs every 15 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NinTodo sells 1 one-off in-app purchase. Zero Password asks for nothing beyond the download.

Zero Password ships an update every 15 months, NinTodo every 3 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Zero Password | NinTodo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 days** |
| Size | 147 MB | 27 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Li Wei](https://appshunter.io/developer/1794714380) | [鹏 鲁](https://appshunter.io/developer/1522202611) |

## What reviewers say

### Zero Password

[App page](https://appshunter.io/ios/app/zero-password/id6741751251)

**In-app purchases:** none


### NinTodo

[App page](https://appshunter.io/ios/app/nintodo/id6817374664)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NinTodo Pro lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Zero Password free?

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

### Is NinTodo free?

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

### Do Zero Password or NinTodo have ads?

Neither Zero Password nor NinTodo shows ads.

### Which is updated more often, Zero Password or NinTodo?

Zero Password ships an update every 15 months, and NinTodo every 3 days. Most recently, Zero Password was updated on October 25, 2026 and NinTodo on October 29, 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.*