# Slib vs Nihonzo

The clearest difference is in-app purchases: Slib at none against Nihonzo's 3. Slib also leads on iOS requirement (15.1 vs 17.0). Nihonzo's advantage is update cadence (every 2 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Nihonzo sells 3 one-off in-app purchases. Slib asks for nothing beyond the download.

Slib ships an update every 3 months, Nihonzo every 2 days. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Slib | Nihonzo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 60 MB | 74 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Khang Tran](https://appshunter.io/developer/1709458766) | [Thanh Hai Pham](https://appshunter.io/developer/6816363207) |

## What reviewers say

### Slib

[App page](https://appshunter.io/ios/app/slib/id6468032091)

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

**In-app purchases:** none


### Nihonzo

[App page](https://appshunter.io/ios/app/nihonzo-learn-japanese/id6816363205)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6-month pass | $7.99 | one-time |
| 12-month pass | $11.99 | one-time |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Slib free?

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

### Is Nihonzo free?

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

### Do Slib or Nihonzo have ads?

Neither Slib nor Nihonzo shows ads.

### Which is updated more often, Slib or Nihonzo?

Slib ships an update every 3 months, and Nihonzo every 2 days. Most recently, Slib was updated on October 8, 2026 and Nihonzo on October 17, 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.*