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TECH
CorroboratedⓘEvidence tiers: Early signal = 1 uncorroborated request — treat as radar, not a validated opportunity · Corroborated = 2-3 requests · Validated = 4+ requests from 2+ different people. Every count appears exactly once, in the fact bar below — each traces to a real source post.
Personal Book Management
In their words
"I’ve been looking for a proper app to manage my eBook library for a long time, but I still haven’t found anything that checks all the boxes" — a builder, verbatim · sign in free to trace the source ↗
What they tried & dropped
Extracted word-for-word from the evidence posts below — every item is quoted verbatim from a real builder.
iPhone
— "never really found one app where I could read different formats and organize my library exactly how I wanted"
verbatimsign in to trace ↗
Komga
— (no stated shortcoming)
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Calibre-Web
— (no stated shortcoming)
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Audiobookshelf
— (no stated shortcoming)
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Hard requirements
Non-negotiables stated by builders in their own words. Miss one and they will not switch.
read different formatsorganize libraryMultiple user accountsFolder/library-based permissionsReading progress trackingLast read position sync
Competitor pricing
Named rivals · prices not yet verified 🔒
Pricing collected · names — log in ↗
How we checked
Where we searched
2 sources · GitHub (open-source check) · SaaS marketplaces
Verification funnel
51 raw matches scanned, then AI-de-duped · see the breakdown below
Last scan
1d ago · auto-refreshed every 3 days
Sign in to see the full opportunity
Every source post · named rivals · what builders tried & dropped · quantified pain — all traceable to the original posts
Sign up free →Signal history
2 posts on record since Aug 2026 — not enough to plot a trend. We plot history once a gap has 3+ posts spanning 3+ weeks.
Evidence pool
2 source posts on record — each insight links back to a real one.
2 reddit