# Blank: Hide in Sound — Hide messages inside sound

> Hide messages inside sound (iPhone/iPad app by Joseph Emmanuel Deladem Kudjordji.)

- Source: https://appshunter.io/ios/app/blank-hide-in-sound/id6782469062 (this page in markdown: same URL + `.md`)
- Developer: [Joseph Emmanuel Deladem Kudjordji](https://appshunter.io/developer/6779929936)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 56 MB
- Languages: American English
- Released: 2026-06-25
- Data updated: 2026-07-30
- User reviews in markdown: https://appshunter.io/ios/app/blank-hide-in-sound/id6782469062/reviews.md

## What is Blank?

Blank hides private messages inside ordinary-sounding audio. Pick a sound, type a secret, set a password — and Blank gives you back a normal .wav file with your message woven invisibly inside. Anyone can play it; only someone with the password can reveal what’s hidden.

Everything happens on your device. Your messages and passwords never leave your iPhone.

HOW IT WORKS
• Encrypt — your message is sealed with AES-256 using your password
• Hide — the encrypted data is woven into the audio, inaudibly
• Reveal — open a Blank file, enter the password, read the message

FEATURES
• Hide encrypted text inside 16-bit WAV audio
• Built-in cover sounds, or import your own
• On-device only — nothing is ever uploaded
• Verify-on-decode: a wrong password or an altered file is detected, not faked
• Face ID app lock
• Light & dark, designed clean and modern
• Preview the audio in-app before you share

BLANK PRO
A one-time purchase unlocks unlimited message length. The free version hides short messages.

IMPORTANT — SHARE AS A FILE
Send Blank audio as a file (AirDrop, Files, email). Sending it as a voice note, or through apps that re-compress audio, will erase the hidden message.

Blank is a privacy and education tool built around classic audio steganography and modern encryption.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Blank Pro | $14.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-06-25

No release notes.

## More apps by Joseph Emmanuel Deladem Kudjordji

- [Daybreak: AI Morning Briefing](https://appshunter.io/ios/app/daybreak-ai-morning-briefing/id6779929934)
- [Since: Last Time Tracker](https://appshunter.io/ios/app/since-last-time-tracker/id6782056222)
- [DebtMap: Debt Payoff](https://appshunter.io/ios/app/debtmap-debt-payoff/id6784444637)
- [EcoAct: Climate Action](https://appshunter.io/ios/app/ecoact-climate-action/id6788756458)
- [LeaveBy: Leave On Time](https://appshunter.io/ios/app/leaveby-leave-on-time/id6790097786)

All apps by Joseph Emmanuel Deladem Kudjordji: https://appshunter.io/developer/6779929936

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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 2026-07-30.*