# JAN Reader vs Keystone Correction

The clearest difference is ads: JAN Reader at none against Keystone Correction's shown. JAN Reader also leads on monetization model (free vs ad-supported). Keystone Correction's advantage is update cadence (every 2 months vs every 68 months) and iOS requirement (11.0 vs 13.6). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JAN Reader ships an update every 68 months, Keystone Correction every 2 months. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | JAN Reader | Keystone Correction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/keystone-correction-comcam/id1504346555/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 68 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 19 MB |
| Requires iOS | 13.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Itoh Tomoaki](https://appshunter.io/developer/871816883) | [Masayoshi Shibata](https://appshunter.io/developer/1474388626) |

## What reviewers say

### JAN Reader

[App page](https://appshunter.io/ios/app/jan-reader/id1447222187)

This utility app scans JAN, EAN, and ITF14 barcodes, allowing you to copy the scanned numbers for use in other applications. It stores up to 999 scan histories with a line break separator and provides haptic feedback on detection for compatible iPhones.

**Highlights:** Scans JAN, EAN, and ITF14 barcodes, Copy scanned numbers, Up to 999 scan history, Line break separator for history, Haptic feedback on detection

**Features:** macOS Compatibility

**In-app purchases:** none


### Keystone Correction

[App page](https://appshunter.io/ios/app/keystone-correction-comcam/id1504346555)

Easily scan and auto-correct documents directly on your device. This secure app keeps your images private by not uploading them online, making it ideal for sensitive business use. All functions are available for free, with no registration or complicated steps required.

**Highlights:** Automatic keystone correction, Secure offline processing, Easy document digitization, Free to use all functions, No user registration, Simple interface

**In-app purchases:** none


## Frequently asked questions

### Is JAN Reader free?

JAN Reader is free to download, with no in-app purchases.

### Is Keystone Correction free?

Keystone Correction is free to download, with no in-app purchases.

### Do JAN Reader or Keystone Correction have ads?

Keystone Correction shows ads; JAN Reader does not.

### Which is updated more often, JAN Reader or Keystone Correction?

JAN Reader ships an update every 68 months, and Keystone Correction every 2 months. Most recently, JAN Reader was updated on September 10, 2026 and Keystone Correction on September 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.*