# SJ SCANNER vs TXTdiff

The clearest difference is in-app purchases: SJ SCANNER at none against TXTdiff's 2. SJ SCANNER also leads on iOS requirement (15.6 vs 17.0). TXTdiff's advantage is update cadence (every 2 months vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. TXTdiff sells 2 in-app purchases, starting at $14.99 per 6 months. SJ SCANNER asks for nothing beyond the download.

SJ SCANNER ships an update every 9 months, TXTdiff every 2 months. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SJ SCANNER | TXTdiff |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 96 MB | 56 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Guangdong Shiji Technology Co.,Ltd.](https://appshunter.io/developer/1405540461) | [宇 鄢](https://appshunter.io/developer/1895890367) |

## What reviewers say

### SJ SCANNER

[App page](https://appshunter.io/ios/app/sj-scanner/id6744717286)

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

**In-app purchases:** none


### TXTdiff

[App page](https://appshunter.io/ios/app/txtdiff/id6764725456)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Semi-Annual with 7-Day Free Trial | $14.99 | per 6 months |
| Annual with 15-Day Free Trial | $19.99 | per year |


## Frequently asked questions

### Is SJ SCANNER free?

SJ SCANNER is free to download, with no in-app purchases.

### Is TXTdiff free?

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

### Do SJ SCANNER or TXTdiff have ads?

Neither SJ SCANNER nor TXTdiff shows ads.

### Which is updated more often, SJ SCANNER or TXTdiff?

SJ SCANNER ships an update every 9 months, and TXTdiff every 2 months. Most recently, SJ SCANNER was updated on September 26, 2026 and TXTdiff on September 20, 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.*