Sandbook

Quiet signal

Turn EPUBs, PDFs, web articles & scans into natural speech.

Launched 1mo ago

Signal

Velocity

What this means

40%Vote pace is below typical for Consumer App.

Running at 40% of comparable launches.

+59%Launching in a 59% WoW growing category.

Audio had 27 launches this week vs 17 last.

10Founder Conviction Index: 10 — low signal.

Few of the conviction sub-signals (reputation, velocity, buyer-intent, tagline clarity) are firing yet.

Prediction

Top-5 finish probability

today

Projected end-of-day votes

3range 2–4

Trajectory

stable

Vote pace holding steady.

Speed vs peers

0.4×

95 Consumer App launches

About

Sandbook turns EPUBs, PDFs, web articles, scanned pages, and photos into natural-sounding audio. Powered by Kokoro, speech is generated directly on your iPhone or iPad, with no cloud processing. Choose from 41 voices across 6 languages, follow along with word-by-word highlighting, and listen offline. Completely free. No account, no ads, no subscriptions, and no character limits.

AI Summary

Sandbook converts EPUBs, PDFs, web articles, and scanned documents into audio using AI-generated speech on iOS devices without cloud processing. It offers 41 voices in 6 languages with offline listening and word-by-word highlighting, all for free and without ads or subscriptions.

Attention & discussion velocity

Performance

Velocity0

Vote pace vs average

Momentum0

Sustained over 6h

Virality0

Spread × engagement

Engagement—

not measured

Signal sources

2 of 6 active

Launch tracking5 readings since we picked it up
AI analysisConsumer App
Comment intelligencethread not yet analysed
Outside discussionnot checked — domain is a storefront or shared
Revenue signalsno match on this domain
Editorial scoringbelow the signal threshold for this pass

A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.