# Every AIDu vs Piece Word

The clearest difference is in-app purchases: Every AIDu at none against Piece Word's 7. Piece Word's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Piece Word sells 7 in-app purchases, starting at $0.99 per 7 days. Every AIDu asks for nothing beyond the download.

Every AIDu ships an update every 3 months, Piece Word every 3 weeks. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Every AIDu | Piece Word |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/every-aidu/id6747190128/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 34 MB | 4 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Haneul Jang](https://appshunter.io/developer/1783701259) | [剑桥 杨](https://appshunter.io/developer/1779132006) |

## What reviewers say

### Every AIDu

[App page](https://appshunter.io/ios/app/every-aidu/id6747190128)

This app offers unlimited practice tests and personalized AI-powered review for the digital SAT. It provides targeted English and Math materials with instant feedback to help users improve their core skills and achieve their college goals.

**Highlights:** Unlimited digital SAT practice tests, Personalized AI learning, Targeted English and Math review, Instant feedback and solutions, Progress tracking and insights

**Features:** macOS Compatibility

**In-app purchases:** none


### Piece Word

[App page](https://appshunter.io/ios/app/piece-word-languages-learning/id6756593922)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周卡订阅 | $0.99 | per 7 days |
| 月卡订阅 | $3.99 | per month |
| Weekly Member | $9.90 | per 7 days |
| Monthly Membership | $14.90 | per month |
| 年会员 | $14.99 | per year |
| Annual Membership | $99.00 | per year |
| 永久会员 | $39.99 | one-time |


## Frequently asked questions

### Is Every AIDu free?

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

### Is Piece Word free?

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

### Do Every AIDu or Piece Word have ads?

Every AIDu shows ads; Piece Word does not.

### Which is updated more often, Every AIDu or Piece Word?

Every AIDu ships an update every 3 months, and Piece Word every 3 weeks. Most recently, Every AIDu was updated on October 30, 2026 and Piece Word on November 9, 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.*