ScholarSail vs OppTests

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ScholarSail compared with OppTests
Detail	ScholarSail	OppTests
What it does	AI-powered study tools for creating mind maps, flashcards, and 3D memory palaces	Generate practice tests from PDFs with AI-powered multiple-choice questions
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	ES
Pricing model	Not given	Freemium
Pricing	Free plan with 30 AI credits/month, 250 MB file storage, unlimited memory palaces and decks. Premium at $20/month (or $10/month for first 3 months with code LAUNCH50) includes 1,000 AI credits/month, 10 GB file storage, and higher-quality AI models. One-off credit packs: 50 AI credits for $1, 150 AI	Free: 0€/month with 3 files, 5 tests/month, 2MB file limit. Basic: 4.99€/month with 25 files, 100 tests/month, 25MB file limit. Premium: 9.99€/month with 100 files, 500 tests/month, 100MB file limit. Annual billing available with 17% savings.
Key features	AI-powered mind map generation from documents Spaced-repetition flashcard system 3D memory palace review Pomodoro timer with colored noise Collaborative editing for maps and decks Document upload and library organization Kanban task boards with time tracking AI writing assistant for notes and essays Email reminders for scheduled reviews	AI-generated multiple-choice questions from PDF content OCR for scanned PDFs with automatic text recognition Timed mock exam mode and untimed review mode Answer review with explanations and source excerpts Retry missed questions and selective review options Export tests to PDF and Word formats Score saving and progress tracking Support for multiple languages Private data storage with strict isolation architecture Different question types beyond multiple choice on paid plans
What makes it different	Unified system connecting mind maps, flashcards, and memory palaces in one platform 3D memory palace review route for memorization Free tools and browser extensions with no account required AI-assisted task prioritization and planning Circadian rhythm-based study scheduling	Generated questions include source excerpts from your original documents for context-based review Automatic OCR processing allows studying from scanned PDFs without selectable text All user rights to generated content are assigned to the learner for personal educational use User content is never used to train AI models or shared with other users Free plan with no time limit gives access to core features without payment requirement
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	36 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	31	0
Referring domains (Majestic)	83	0

4 details filled in for both companies.

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