NullKey
Offline encrypted notes, documents and photos for Android
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NullKey is an offline encrypted vault for Android 12L and later. Keep private notes, documents and photos on your phone with no account, no ads and no developer server. Free for up to 30 items. Unlimited items are an optional one-time purchase, with no subscription. Google Play shows the price for your country.
PH · launched Nov 9, 2026 · 1 upvote (top 65%) · 0 views
Niche: encryption and cryptography tools · 147 launches, 21 in the last 7 days ▲ +40% · Explore this niche →
Category and tags
- Horizontal
- Workflow automation
- B2C
- Not AI
- Commercial product
- Android
- Privacy
Visit website ↗ Source listing ↗
More like this: all 147 launches in encryption and cryptography tools →
Could you build this?
Yes An offline encrypted notes vault can be built on standard Android encryption libraries and Keystore, with no server or account needed.
Competitors
Other products that read as similar to this one : 434 launches clear the similarity bar, closest 8 shown.
Attention rank: #179 of 435 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 360 days after the earliest competitor.
- VaultIt · ph · 2026-11-11 · 1 upvotes · similarity 0.56
- Secret Folder · ph · 2026-10-22 · 2 upvotes · similarity 0.54
- Memories on Cloud · ph · 2026-09-06 · 1 upvotes · similarity 0.49
- Password Book 3.0 · ph · 2026-10-01 · 3 upvotes · similarity 0.49
- Coffre — your notes, encrypted · ph · 2026-10-22 · 1 upvotes · similarity 0.49
- Encrypt3r · ph · 2026-11-10 · 2 upvotes · similarity 0.48
- BitTool Signer · ph · 2026-10-30 · 3 upvotes · similarity 0.48
- Nefeli · ph · 2026-11-11 · 2 upvotes · similarity 0.48
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.