# Simple Trace Pro vs AJ

The clearest difference is review sentiment: AJ at 100% against Simple Trace Pro's 0%. AJ also leads on price (Free vs $0.99) and rating (4.0 vs 3.0). Simple Trace Pro's advantage is in-app purchases (none vs 9) and iOS requirement (14.5 vs 26.0). On ratings volume, update cadence, ads and device support there is nothing between them.

AJ is free to download; Simple Trace Pro costs $0.99 up front. AJ sells 9 in-app purchases, starting at $5.99 per month. Simple Trace Pro asks for nothing beyond the download.

AJ holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Simple Trace Pro's written reviews are positive against 100% of AJ's.

Simple Trace Pro ships an update every 2 weeks, AJ monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple Trace Pro | AJ |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/simple-trace-pro/id1585591838/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/aj-manga/id6761073104/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 19 MB |
| Requires iOS | **14.5** | 26.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuaki Matsuda](https://appshunter.io/developer/1560179759) | [JAMSoft Inc](https://appshunter.io/developer/1834230814) |

## What reviewers say

### Simple Trace Pro

[App page](https://appshunter.io/ios/app/simple-trace-pro/id1585591838)

Practice drawing and illustration by tracing photos and images. Load pictures from your camera roll and use Apple Pencil to refine your line work. Save your traced creations as JPGs or transparent PNGs.

**Highlights:** Trace photos and pictures, Practice illustration and painting, Load images from camera roll, Apple Pencil support, Adjustable transmittance, Zoom functionality, Save as JPG or transparent PNG

**Features:** macOS Compatibility

**In-app purchases:** none


### AJ

[App page](https://appshunter.io/ios/app/aj-manga/id6761073104)

Create manga stories and series using AI. Plan your narrative, design characters, generate artwork, and lay out pages within a single workspace. Export your finished manga in various formats suitable for print or digital distribution.

**Highlights:** AI Story Assistant for drafting chapters and scenes, Generate manga art from prompts or photo references, Reuse characters, props, and environments for continuity, Organize characters, chapters, pages, and panels, Export in PDF, image sets, or webtoon strips, Sync projects across devices with iCloud

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Creator | $5.99 | per month |
| Pro | $12.99 | per month |
| Chibi Cute Pack | $1.99 | one-time |
| Horror Dark Pack | $2.99 | one-time |
| Shonen Action Pack | $2.99 | one-time |
| Shoujo Romance Pack | $2.99 | one-time |
| 50 AI Generations | $2.99 | one-time |
| 200 AI Generations | $6.99 | one-time |
| 500 AI Generations | $12.99 | one-time |


## Frequently asked questions

### Is Simple Trace Pro free?

Simple Trace Pro costs $0.99, with no in-app purchases.

### Is AJ free?

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

### Which has better reviews, Simple Trace Pro or AJ?

AJ is rated higher. Simple Trace Pro averages 3.0 out of 5 from 2 ratings, while AJ averages 4.0 from 1 ratings.

### Do Simple Trace Pro or AJ have ads?

Neither Simple Trace Pro nor AJ shows ads.

### Which is updated more often, Simple Trace Pro or AJ?

Simple Trace Pro ships an update every 2 weeks, and AJ monthly. Most recently, Simple Trace Pro was updated on November 3, 2026 and AJ on October 31, 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.*