# Sotto - Privacy Mask — Redact Screenshots with OCR

> Privacy-focused tool for masking screenshots and extracting text from images. (iPhone/iPad app by MITSUKI HAMADA.)

- Source: https://appshunter.io/ios/app/sotto-privacy-mask/id6759964023 (this page in markdown: same URL + `.md`)
- Developer: [MITSUKI HAMADA](https://appshunter.io/developer/1880299065)
- Category: Utilities, Lifestyle
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17 · 14 MB
- Languages: American English, Japanese, Chinese (Traditional, Taiwan)
- Released: 2026-03-16
- Data updated: 2026-09-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sotto-privacy-mask/id6759964023/reviews.md

## What is Sotto?

【Privacy-First: Complete Local Processing】
All image processing is performed entirely on your device. No image data is ever sent to external servers.
Sotto is a privacy-focused tool for everyday tasks like masking personal information before posting screenshots on social media, extracting text from business cards and documents, or resizing images.

Main Features

■ Text-Based Masking
Automatically detect and mask sensitive information such as names, phone numbers, addresses, and email addresses.
Instead of manually painting over content, Sotto uses clean block-style masks to help organize screenshots in a more readable way.

■ OCR (Text Recognition) + Smart Actions
Extract text from images, supporting both horizontal and vertical text.
Tap extracted addresses or phone numbers to instantly open maps or make calls.
Smart Actions make it easy to use information from business cards and documents right away.

■ Text Correction Tool
Includes a correction tool for cleaning up text extracted by OCR.
Easily format text within the app, such as organizing unnecessary line breaks.

■ Multi-Function QR Code Reader
Read QR codes not only via camera, but also from images in the Photos app.
Supports opening URLs, making phone calls, and reading eSIM QR codes.

■ Image Adjustment (Resolution, Cropping & Watermark)
Change just the resolution (dimensions) of an image in pixels — handy for resizing App Store screenshots to required sizes.
Choose your finishing method from "Crop to area," "Fit entire image to size," or "Fit within margins" to adjust images to your needs.
You can also add a watermark to images, with adjustable position and shadow — great for deterring unauthorized reuse or displaying your brand.

Use Cases
- Mask personal information in screenshots before posting on social media
- Instantly open maps from business card addresses
- Extract text from paper documents or notes
- Quickly retrieve invoice or payment information
- Resize images to specific dimensions for the App Store or blogs
- Add watermarks to artwork or documents to deter unauthorized reuse

Make image processing simpler with Sotto.

## Key features

- Text-based privacy masking
- OCR text extraction
- Smart actions for extracted data
- Text correction tool
- QR code reader from images

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/sotto-privacy-mask/id6759964023/reviews.md

### 5/5 — 写真のモザイク

*2026-05-31*

使いやすかったです！

### 5/5 — 一括マスク機能ができるのが便利でした！！！

*2026-05-20*

SNSのストーリー投稿で毎回スタンプを1個ずつ置いて顔を隠すのが本当に面倒だったのですがこのアプリでは写真内の顔をまとめて一括で認識隠せるのでとても便利でした！友達への写真のシェアなども気軽にしやすくなって助かってます！

### 5/5 — ローカルでのみの処理

*2026-04-17*

風景を撮影して写真をアップするときに、AIで人物を消すと違和感が出てくるため、モザイクにしたいときに便利なアプリです。
ネットワークにつながっていないときでも使えるのが良いです。

### 5/5 — 端末内処理だけなので安心です

*2026-04-17*

ほぼタイトルオンリーなのですが、マスクかけたりスクショの仕様が変更後でもちゃんとQRコードが読み込めたりするので、めっちゃ便利です。

### 1/5 — 残念アプリ⤵

*2026-04-16*

正直言って使いづらいし､自動で認識するみたいだけど､正確性に欠ける😞

**Developer response:** v1.2.5で自動認識精度を改善しました。ぜひお試しください。

## Frequently asked questions about Sotto

### What is Sotto's primary function?

Sotto is designed to protect your privacy by automatically detecting and masking sensitive information like names, phone numbers, and addresses in screenshots. It also offers OCR capabilities to extract text from images and a QR code reader.

### Does Sotto process data locally?

Yes, all image processing for Sotto is performed entirely on your device. No image data is ever sent to external servers, ensuring a privacy-first approach.

### How much does Sotto cost?

Sotto is a paid application priced at $2.99. There are no in-app purchases or subscriptions required beyond this one-time purchase.

### What devices is Sotto available on?

Sotto is available for iPhone and iPad devices.

### How often is Sotto updated?

The latest version, 1.3.2, was released on June 18, 2026, indicating regular updates to improve functionality and reliability.

### Can Sotto extract text from any image?

Sotto can extract text from images, supporting both horizontal and vertical text. It also includes a text correction tool to clean up OCR results.

### What age rating does Sotto have?

Sotto has an age rating of 4+, making it suitable for a wide range of users.

### Does Sotto have ads?

No, Sotto does not contain advertisements. As a paid application with no in-app purchases, it offers an ad-free experience.

## Version history (last 5 releases)

### 2.0.4 — 2026-07-24

- Watermark settings are now saved automatically and restored the next time you launch the app.  
- “Hide with Sotto” in the Share Sheet now lets you preview images, edit mask areas, and save the result as a new photo without leaving the Share Sheet.

### 2.0.3 — 2026-07-21

Updated the UI.  
You can now open the Watermark and Hide menus directly from the Photos app.

### 2.0.2 — 2026-07-19

Added a digital watermark feature to Adjust Image.

### 2.0.1 — 2026-07-16

Refactored the codebase.
 Improved the user interface of the Adjust Image feature to make it more intuitive.

### 2.0.0 — 2026-07-12

Added an “Adjust Image” feature that lets you resize and transform images by specifying their resolution.

## More apps by MITSUKI HAMADA

- [Aerune](https://appshunter.io/ios/app/aerune/id6759705337)
- [Nailo](https://appshunter.io/ios/app/nailo/id6760372236)
- [garupon](https://appshunter.io/ios/app/garupon/id6766561274)
- [マコモファミリー](https://appshunter.io/ios/app/id6794776262)

All apps by MITSUKI HAMADA: https://appshunter.io/developer/1880299065

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*