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OS Interview Questions vs its rivals

Side-by-side comparison against OS Interview Questions's closest competitors — identity, store metrics, ratings & sentiment, and strategic intel.

OS Interview Questions
This App
Brilliant: Learn by doing
Peer
Khan Academy
Peer
Chegg Study - Homework Help
Peer
Brainly: Your Personal Tutor
Peer
Answer.AI - Your AI tutor
New Kid
Question.AI-Math Calculator
New Kid
Core Identity
DeveloperRAVINDHIRAN SUMITHRABrilliant.orgKhan AcademyChegg, Inc.Brainly sp. z o oANSWER AI LAB INC3HOUSE
CategoryEducationEducationEducationEducationEducationEducationEducation
PlatformiOS, AndroidAndroid, iOSiOS, AndroidAndroid, iOSAndroid, iOSAndroid, iOSiOS, Android
Store Metrics
Rating1.0 / 54.7 / 54.6 / 54.7 / 54.7 / 54.7 / 54.7 / 5
Ratings Count128,593105,047204,814283,514166,296155,399
PriceFreeFreeFreeFreeFreeFreeFree
Release DateSep 4, 2016Jun 19, 2015Mar 11, 2012Aug 10, 2010Nov 28, 2013Mar 20, 2023May 30, 2023
Last UpdatedJun 24, 2024Apr 16, 2026Feb 24, 2026Apr 13, 2026Apr 13, 2026Apr 2, 2026Apr 7, 2026
Sentiment & Reviews
Sentiment--positiveterrible---
Score--78/10015/100---
Praises--
  • High-Quality Free Education
  • Effective Learning Content
  • Historical utility of the platform provided significant academic support during previous college years
---
Complaints--
  • Login and Authentication Issues
  • Technical Performance and Bugs
  • Replacement of human expert solutions with inaccurate AI responses degrades the core value proposition
---
Requests---
  • Direct access to human expert assistance without being forced through AI-first workflows
---
Strategic Intel
Strengths
  • Niche focus on OS theory provides a clear, singular value proposition for technical interview preparation
-
  • Unrivaled free access model with high brand trust
  • Advanced AI tutoring integration (Khanmigo)
  • Comprehensive, expert-created video and exercise library
  • 60-million-question library functions as a content barrier
  • Established brand trust in academic support
---
Weaknesses
  • 1.0 rating on iOS indicates severe quality or usability issues
  • Lack of interactive content limits user engagement
-
  • Critical authentication and login stability issues
  • Mobile app performance and latency compared to web
  • Less granular skill tracking than commercial rivals like IXL
  • 1.44★ Android-iOS rating gap
  • High-frequency complaints regarding AI-answer inaccuracy
  • Difficult cancellation processes
---
Pricingfreefreemiumfreesubscriptionfreemiumfreemiumfree
Momentum-IntenseMaintenanceActiveIntenseIntenseIntense
Update Cadence-5 versions5 versions, ~93d avg5 versions, ~7d avg5 versions5 versions5 versions

Compare OS Interview Questions head-to-head

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by OS Interview Questions, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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