Hidden Letter: Image Secrets
Hide encrypted secrets in photos and on the map
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Turn ordinary photos into private messages and real-world surprises. HiddenLetter lets you encrypt and hide text, photos, audio, videos, and documents inside images. Protect secrets with password, time, or location locks, or leave them on a map for others to discover. Made for personal keepsakes, surprise letters, and treasure hunts.
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PH · launched Oct 27, 2026 · 1 upvote (top 67%)
- Security
- B2C
- Not AI
- Commercial product
- Android
- Tech
- Entertainment
Similar launches
See all 392 similar launches →Could you build this?
Yes Image steganography, standard encryption, time and location gating, and a map UI are all implementable with existing libraries and mobile APIs.
Competitors
Other products that read as similar to this one : 392 launches clear the similarity bar, closest 8 shown.
Attention rank: #152 of 393 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 347 days after the earliest competitor.
- Hide Photos: Secret Album · ph · 2026-10-14 · 1 upvotes · similarity 0.65
- hidden.irish · ph · 2026-10-29 · 1 upvotes · similarity 0.59
- StegoVault: Hide Secret Files · ph · 2026-10-15 · 2 upvotes · similarity 0.59
- Zipperhide · ph · 2026-10-13 · 1 upvotes · similarity 0.56
- CELATUS · ph · 2026-09-11 · 2 upvotes · similarity 0.55
- Cryptogram Game - FreeWWW · ph · 2026-10-28 · 2 upvotes · similarity 0.55
- PhotoCleaner+ · ph · 2026-10-08 · 3 upvotes · similarity 0.54
- Scrambl: Photo Obfuscation · ph · 2026-10-18 · 1 upvotes · similarity 0.54
Other launches for this product
- No other launches for this product.