OpenWhen
Letters that stay sealed until the right moment
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In February OpenWhen was a Valentine's love letter. Now it's sealed letters for any moment. Lock one to a date, or to a question only they can answer. We can email it to them and nudge them the day it opens. New since then: note jars that open one note a day, group jars a whole team signs, a hand-drawn signature, and replies so they can write back. Still free, and still no account for anyone. Premium is one payment, never a subscription.
PH · launched Oct 24, 2026 · 2 upvotes (top 22%) · 0 views
Niche: digital time capsule apps · 23 launches, 2 in the last 7 days · Explore this niche →
Category and tags
- Horizontal
- B2C
- Not AI
- Commercial product
- Messaging
- Writing
- Social Media
Visit website ↗ Source listing ↗
More like this: all 23 launches in digital time capsule apps →
Could you build this?
Yes Scheduled delivery of sealed messages, with date or question-based unlock and email nudges, is standard CRUD plus a job scheduler and transactional email.
Competitors
Other products that read as similar to this one : 142 launches clear the similarity bar, closest 8 shown.
Attention rank: #28 of 143 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 296 days after the earliest competitor.
- Open When Jar · ph · 2026-10-30 · 1 upvotes · similarity 0.59
- ForWhen open when letters · ph · 2026-11-01 · 2 upvotes · similarity 0.54
- The Note Jar · ph · 2026-09-14 · 2 upvotes · similarity 0.50
- SoulsNote · ph · 2026-11-03 · 1 upvotes · similarity 0.47
- Dear You: Daily Letters · ph · 2026-10-11 · 1 upvotes · similarity 0.47
- loveLINK · ph · 2026-09-26 · 1 upvotes · similarity 0.44
- DigiLoveLetter · ph · 2026-11-12 · 1 upvotes · similarity 0.44
- Love Envelope · ph · 2026-11-02 · 2 upvotes · similarity 0.43
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.