Keystone Correction vs 文字起こし
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
文字起こし
Extracts text from images using OCR technology. Quickly convert visual information into editable text for easy sharing and editing.
- Image to text extraction
- OCR technology
- Editable text output
- Text sharing
- Text editing
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画像から文字を読み取ります。
Screenshots
Verdict
The clearest difference is review sentiment: 文字起こし at 83% against Keystone Correction's 67%. 文字起こし also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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.
Keystone Correction ships an update every 2 months, 文字起こし every 3 weeks. The most recent releases landed on September 16, 2026 and August 15, 2026 respectively.
| Parameter | Keystone Correction | 文字起こし |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 66.7% of reviews | 83.3% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 19 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayoshi Shibata | Rikuto Komatsu |
Customer experience
Keystone Correction
文字起こし
In-app purchases
Keystone Correction
No in-app purchases
文字起こし
No in-app purchases
Questions
Is Keystone Correction free?
Is 文字起こし free?
Do Keystone Correction or 文字起こし have ads?
Which is updated more often, Keystone Correction or 文字起こし?
Other comparisons
