# N4 vs Alfredo Backer

The clearest difference is price: Alfredo Backer at Free against N4's $9.99. Alfredo Backer also leads on iOS requirement (16.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Alfredo Backer is free to download; N4 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

N4 ships an update every 6 months, Alfredo Backer every 8 months. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | N4 | Alfredo Backer |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | Paid | — |
| Size | 19 MB | 55 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yamase & Touwa Japanese Insititute](https://appshunter.io/developer/442115304) | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) |

## What reviewers say

### N4

[App page](https://appshunter.io/ios/app/n4/id495496641)

Master JLPT N4 grammar with this app. It organizes sentence patterns with clear explanations in Chinese and provides practice questions. Easily mark difficult words for review to improve your exam performance.

**Highlights:** JLPT N4 grammar organization, Detailed sentence pattern explanations, Chinese language explanations, Word marking for review, Over 300 practice questions

**Features:** Vision Pro support

**In-app purchases:** none


### Alfredo Backer

[App page](https://appshunter.io/ios/app/alfredo-backer/id1212354980)

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

**In-app purchases:** none


## Frequently asked questions

### Is N4 free?

N4 costs $9.99, with no in-app purchases.

### Is Alfredo Backer free?

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

### Do N4 or Alfredo Backer have ads?

Neither N4 nor Alfredo Backer shows ads.

### Which is updated more often, N4 or Alfredo Backer?

N4 ships an update every 6 months, and Alfredo Backer every 8 months. Most recently, N4 was updated on September 20, 2026 and Alfredo Backer on September 18, 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.*