# 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 vs Peka

The clearest difference is update cadence: Peka at every 3 days against 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 sells 3 in-app purchases, starting at $3.99 per month and Peka sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 ships an update every 6 weeks, Peka every 3 days. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 | Peka |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Size | 57 MB | 20 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [剑锋 刘](https://appshunter.io/developer/1725321361) | [Yung-Ling Chang](https://appshunter.io/developer/6777938144) |

## What reviewers say

### 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除

[App page](https://appshunter.io/ios/app/id6480305754)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月 | $3.99 | per month |
| 包季 | $8.99 | per 3 months |
| 包年 | $22.99 | per year |


### Peka

[App page](https://appshunter.io/ios/app/peka/id6791050254)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peka 月繳 | $9.99 | per month |
| Peka 年繳 | $29.99 | per year |
| 終身解鎖 | $49.99 | one-time |


## Frequently asked questions

### Is 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 free?

背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 is free to download, with in-app purchases available.

### Is Peka free?

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

### Do 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 or Peka have ads?

Neither 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 nor Peka shows ads.

### Which is updated more often, 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 or Peka?

背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 ships an update every 6 weeks, and Peka every 3 days. Most recently, 背單字、背英單、艾賓浩斯記憶曲線固有弱點消除 was updated on September 28, 2026 and Peka on September 27, 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.*