# Underlayer — Steganography made simple

> Steganography made simple (iPhone/iPad app by Mihail Rukavishnikov.)

- Source: https://appshunter.io/ios/app/underlayer/id6753363956 (this page in markdown: same URL + `.md`)
- Developer: [Mihail Rukavishnikov](https://appshunter.io/developer/1648782212)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 169 MB
- Languages: American English
- Released: 2025-10-03
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/underlayer/id6753363956/reviews.md

## What is Underlayer?

UNDERLAYER - STEGANOGRAPHY MADE SIMPLE


Transform ordinary images into secret carriers. Hide confidential messages invisibly within photos and share them through any messenger without raising suspicion.


KEY FEATURES:



  HIDE SECRETS
  • Embed text messages invisibly into any image
  • Two encoding modes: Hidden (invisible pixels) and Open (colored frame)
  • Open mode survives messenger compression (Telegram, WhatsApp, etc.)
  • Share processed images directly or save to gallery

  
  REVEAL MESSAGES
  • Extract hidden text from steganographic images
  • Automatic detection of encoding method
  • Works with images received through messengers
  • Share intent support - open images directly from gallery

  

  WHY UNDERLAYER?

  • Simple & Intuitive - No cryptography knowledge required
  • Messenger-Friendly - Open mode designed for compressed sharing
  • Privacy First - All processing happens locally on your device
  • Universal - Works with JPG, PNG, WebP formats
  • No Account Required - Start using immediately

  
  USE CASES

  • Private communication through public channels
  • Watermarking images with hidden ownership data
  • Secure note-taking in plain sight
  • Educational tool for learning steganography
  • Fun way to send secret messages to friends

  
  SECURITY & PRIVACY


  • No internet connection required for processing
  • Your messages never leave your device
  • No data collection or tracking
  • Complete control over your secrets

    
  PREMIUM FEATURES

  • No banner ads at the bottom
  • No interstitial ad interruptions
  • Process unlimited images without ad breaks

  
  HOW IT WORKS

  1. Select any image from your gallery
  2. Enter your secret message
  3. Choose encoding mode (Hidden or Open)
  4. App embeds message into image pixels
  5. Share through messengers or save locally
  6. Recipient opens image in Underlayer to reveal message

  
  ENCODING MODES EXPLAINED

  HIDDEN MODE
  • Message embedded invisibly in image pixels
  • Completely undetectable to human eye
  • Best for uncompressed image sharing
  • Lost when image is compressed by messengers

  OPEN MODE
  • Message encoded as colored frame border
  • Visible as decorative edge around image
  • Survives Telegram, WhatsApp compression
  • Recommended for messenger sharing

   
  INTERNATIONAL

  • Available in English and Russian
  • More languages coming soon
  • Automatic language detection

  Whether you're a privacy enthusiast, security professional, or just curious about steganography - Underlayer makes it accessible to everyone.

  Download now and start hiding your secrets in plain sight!

Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium | $2.99 | per 7 days |



## Version history (last 3 releases)

### 1.0.2 — 2026-08-22

Technical improvements

### 1.0.1 — 2025-10-06

Minor UI enhancements

### 1.0 — 2025-10-03

No release notes.

## Apps similar to Underlayer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PixelMask](https://appshunter.io/ios/app/pixelmask/id6642652050) | 5.0 (1) | Free | Utilities |
| [Cipher Pixel](https://appshunter.io/ios/app/cipher-pixel/id6479542527) | — | Free | Utilities |
| [Stegg](https://appshunter.io/ios/app/stegg/id1487379535) | 5.0 (6) | Free | Utilities |
| [Needl Encrypt](https://appshunter.io/ios/app/needl-encrypt/id6753882509) | 5.0 (2) | Free | Utilities |
| [Stego](https://appshunter.io/ios/app/stego/id6752862926) | — | Free | Utilities |
| [Advanced Pixels](https://appshunter.io/ios/app/advanced-pixels/id6739187287) | — | Free | Utilities |

## More apps by Mihail Rukavishnikov

- [ActionS Game](https://appshunter.io/ios/app/actions-game/id6737613122)
- [LitCards - Learn Lithuanian](https://appshunter.io/ios/app/litcards-learn-lithuanian/id6749310227)
- [BrainMesh - Local Quiz Game](https://appshunter.io/ios/app/brainmesh-local-quiz-game/id6751363098)
- [Mesh Party](https://appshunter.io/ios/app/mesh-party/id6759370172)
- [Kvit - Split Bills & Expenses](https://appshunter.io/ios/app/kvit-split-bills-and-expenses/id6760459126)

All apps by Mihail Rukavishnikov: https://appshunter.io/developer/1648782212

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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 2026-08-31.*