OpponentBook
The private journal you keep on every opponent
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OpponentBook is a private journal for individual-sport athletes: log matches, keep notes on everyone you face, and pin tactics directly on the piste, table, court, ring or mat. Each pin links to the exact second in your match video. Your notes live on your own Google Drive, Dropbox or iCloud, not on our servers, so we can't read them. 17 sports and 21 languages, with a generous free tier. Premium, Pro and Max add stats, heatmaps and AI briefs based on your own notes.
PH · launched Sep 25, 2026 · 1 upvote (top 69%) · 0 views
Niche: sports and tournament management software · 137 launches, 10 in the last 7 days ▼ -23% · Explore this niche →
Category and tags
- Horizontal
- CRM & pipeline
- B2C
- Not AI
- Commercial product
- Android
- Health & Fitness
- Sports
- Privacy
Visit website ↗ Source listing ↗
More like this: all 137 launches in sports and tournament management software →
Could you build this?
Yes It is a standard CRUD sports journaling app with a canvas/UI overlay to place pins synced to video timestamps, storing state locally or in user-connected cloud storage providers.
Competitors
Other products that read as similar to this one : 67 launches clear the similarity bar, closest 8 shown.
Attention rank: #58 of 68 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 19 days after the earliest competitor.
- OpponentIQ · ph · 2026-11-14 · 1 upvotes · similarity 0.50
- MatchLog — A football log tracker · ph · 2026-09-10 · 1 upvotes · similarity 0.44
- Gary AI · ph · 2026-09-20 · 1 upvotes · similarity 0.42
- Notebook Fighters · ph · 2026-10-12 · 1 upvotes · similarity 0.42
- MatchAnalyzr · ph · 2026-10-01 · 1 upvotes · similarity 0.41
- FutBoxd · ph · 2026-10-27 · 1 upvotes · similarity 0.41
- SportNote · ph · 2026-09-17 · 1 upvotes · similarity 0.40
- Derby Duel · ph · 2026-10-28 · 1 upvotes · similarity 0.39
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.