JAN Reader vs Keystone Correction
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAN Reader
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.
- Scans JAN, EAN, and ITF14 barcodes
- Copy scanned numbers
- Up to 999 scan history
- Line break separator for history
- Haptic feedback on detection
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JAN Reader is an app that can scan JAN / EAN / ITF14 barcode. You can copy the scanned number and use it with other applications. You can keep up to 999 copy history. The format copied history is a line break separator. Feedback on Detect When barcode is detected, it notifies you by vibration (Haptic Feedback) of iPhone. (* 1) (* 1) It works only on iPhone 7 and later models.
Keystone Correction
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.
- Automatic keystone correction
- Secure offline processing
- Easy document digitization
- Free to use all functions
- No user registration
- Simple interface
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* [Easy] scan and auto-correction * [Secure] don't upload images to the Internet. * [Free] free for all functions. Comcam is a simple, secure, and powerful scanner App ## how to use Step 1: Take a photo or load an existing photo Step2. cut out the part you want Step3. save to a photo app or share to another app ## features - Since the captured images are not uploaded to the Internet, you can be used for business without worrying about security. - Paper documents can be easily digitized, making it possible to go paperless with little effort. - There are no complicated functions, so anyone can use it easily. - Use all features for free. - No user registration required. - No need to upload images to the Internet.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | JAN Reader | Keystone Correction |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 68 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Itoh Tomoaki | Masayoshi Shibata |
Customer experience
JAN Reader
Keystone Correction
In-app purchases
JAN Reader
No in-app purchases
Keystone Correction
No in-app purchases
Questions
Is JAN Reader free?
Is Keystone Correction free?
Do JAN Reader or Keystone Correction have ads?
Which is updated more often, JAN Reader or Keystone Correction?
Other comparisons
