# Duo ABC vs WriteTrax

The clearest difference is rating: WriteTrax at 5.0 against Duo ABC's 4.6. Duo ABC's advantage is ratings volume (21 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Duo ABC sells 8 in-app purchases, starting at $1.49 per 3 months and WriteTrax sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

WriteTrax holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Duo ABC has 21 ratings behind it against 2, so its average is the more settled of the two.

Duo ABC ships an update every 3 weeks, WriteTrax monthly. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Duo ABC | WriteTrax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (21 ratings)](https://appshunter.io/ios/app/duo-abc/id1594001123/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/writetrax/id6764795931/reviews)** |
| Number of ratings | **21** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 158 MB | 44 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [nguyen thanh](https://appshunter.io/developer/1481436893) | [Forgotten Wings LLC](https://appshunter.io/developer/1895918147) |

## What reviewers say

### Duo ABC

[App page](https://appshunter.io/ios/app/duo-abc/id1594001123)

This app helps 10th-grade students master English with interactive tests and lessons. It offers offline access and allows for self-paced learning, making it a convenient tool for academic success.

**Highlights:** Offline Access, Interactive Tests, Self-paced Learning, Teacher-Friendly Interface, Grade 10 English Mastery

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Months VIP | $1.49 | per 3 months |
| Learning Premium Monthly Plan | $1.99 | per month |
| One Month VIP | $4.99 | per month |
| Learning Premium HalfYear Plan | $5.99 | per 6 months |
| Learning Premium Annual Plan | $9.99 | per year |
| 1 Year VIP | $24.99 | per year |
| Six Months VIP | $24.99 | per 6 months |
| No ads Pack | $14.99 | one-time |


### WriteTrax

[App page](https://appshunter.io/ios/app/writetrax/id6764795931)

Instantly screen for handwriting difficulties with this evidence-based tool. Analyze a student's handwriting from a photo to get scores, identify root causes, and receive intervention strategies. Generate professional PDF reports for documentation and track progress over time.

**Highlights:** Instant handwriting analysis from photos, Five-dimension scoring (Letter Formation, Line Alignment, Spacing, Sizing, Slant), Root cause identification (Motor, Knowledge, Attention), Classroom-ready intervention strategies, Professional PDF report generation, Progress tracking and class-level reports, Supports Pre-K through 12th grade

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WriteTrax Premium | $5.99 | per month |


## Frequently asked questions

### Is Duo ABC free?

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

### Is WriteTrax free?

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

### Which has better reviews, Duo ABC or WriteTrax?

WriteTrax is rated higher. Duo ABC averages 4.6 out of 5 from 21 ratings, while WriteTrax averages 5.0 from 2 ratings.

### Do Duo ABC or WriteTrax have ads?

Neither Duo ABC nor WriteTrax shows ads.

### Which is updated more often, Duo ABC or WriteTrax?

Duo ABC ships an update every 3 weeks, and WriteTrax monthly. Most recently, Duo ABC was updated on October 25, 2026 and WriteTrax on October 16, 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.*