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SoBrief: Book Summaries

by Audiblogs, Inc.

  • Education
  • Free
  • Small & simple · 97
View on the App Store
Rating
4.2
24 ratings · Italy storefront
Last update
Sep 17, 2026
Version 1.2.11
Size
16 MB
Category
Education
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

SoBrief is the #1 AI-powered book summary app with the largest catalog, using AI to help you discover your next reads and finish any book in just 10 minutes with instant access to 73,530 book summaries in over 40 languages.

MAIN FEATURES:

  • Swipe to Discover: Our viral "Tinder for books" feature uses AI to personalize book recommendations, making discovery fun and addictive.
  • Massive Library: Bestsellers, classics, niche titles, ebooks, and exclusive content across Business, Self-Help, Romance, Thriller, Psychology, History, Science, Philosophy, Biographies, and more.
  • Audio Book Summaries: Listen to narrated summaries anytime, anywhere—in your preferred language. A perfect microlearning app experience.
  • AI-Powered Book Recommendations: Let AI find perfect books based on your reading taste and preferences.
  • Search & Discover: Effortlessly find specific summaries or discover exciting new titles with intuitive search and personalized recommendations.
  • Scan Books Instantly: Scan any book barcode to get its summary immediately.
  • Requests: Seamlessly request books to summarize if not in our catalog.
  • Multilingual Access: Summaries available in 40+ languages: Spanish, Chinese Simplified, French, German, Japanese, Portuguese, Italian, Korean, Russian, Dutch, Arabic, Polish, Hindi, Vietnamese, Swedish, Greek, Turkish, Thai, Czech, Romanian, Hungarian, Ukrainian, Indonesian, Danish, Finnish, Bulgarian, Hebrew, Norwegian, Croatian, Catalan, Slovak, Lithuanian, Slovenian, Serbian, Estonian, Latvian, Persian, Malayalam, Tamil, and Urdu.

EFFORTLESS LEARNING EXPERIENCE:

  • Absorb key ideas quickly, ideal for busy lives and daily microlearning.
  • Enjoy an ad-free, distraction-free learning environment.

HOW SOBRIEF WORKS:

  • Download SoBrief and explore tens of thousands of summaries.
  • Add interactive widgets for continuous, effortless learning.
  • Listen to or read summaries in multiple languages at your convenience.
  • Unlock knowledge effortlessly and transform daily moments into growth, insight, and inspiration.

Download SoBrief today.

Terms of Use: https://sobrief.com/terms
Privacy Policy: https://sobrief.com/privacy

What’s new

Release notes for the latest version, as written by the developer.

v1.2.11
Original · root

Bug fixes and improvements

Rank history

Daily position in the North Macedonia charts. #1 is at the top.

Best rank
#3
Current rank
#3
Days charting
1 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

97/100

Small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size100% · 20

    Ratings: 24

  • App size100% · 10

    Size: 16 MB

  • Price model80% · 15

    Price model: free with in-app purchases

  • Demand proof100% · 30

    Best rank #3, 18 countries

An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2

How the score works

Version history

  • 1.2.11LatestReleased Sep 17, 2026