Start building high-fidelity assessments for free, or unlock LTI 1.3 Canvas sync, mock CLI terminals, and print-ready PDF booklets.
A comprehensive overview of features, limits, and integration choices across our subscription tiers.
| Features & Capabilities | Sandbox | Basic | Pro | Educator |
|---|---|---|---|---|
| Curriculum & Formats | ||||
| Core FormatsMultiple-choice, multi-select, true/false, fill-in-the-blank, short answer | ||||
| LaTeX & Math VerificationAlgebraic mathematical expressions evaluated symbolically via SymPy | ||||
| CCNA Terminal SimulatorMock Terminal Simulator: Dummy command-line console to practice syntax and pattern-based state verification. | — | — | ||
| Ingestion & AI Limits | ||||
| Manual Exam AuthoringCreate and sequence custom assessment questions | Up to 50 questions | Unlimited | Unlimited | Unlimited |
| AI Generation CreditsWeekly limit for exam blueprints and study kits | 50 / Week | 250 / Week | 750 / Week | 1,500 / Week |
| Upload StorageTotal space for document uploads and imported deck media | 100 MB | 1 GB | 1 GB | 1 GB |
| AI TutorPersonalized interactive guidance and chat history. Uses AI generation credits. | ||||
| Adaptive Exam EngineDynamically adjusts difficulty based on real-time performance | — | — | ||
| Weakness DrillsTargeted practice generated from the questions you actually missed | — | — | ||
| Bulk GenerationQueue multi-exam and multi-deck generation runs in one request | — | — | ||
| Live Labs & SimulationsInteractive lab-engine scenarios beyond static question formats | — | — | ||
| Spaced Repetition (SRS) DecksFSRS-powered flashcard scheduling based on individual review performance | ||||
| Distribution & Exports | ||||
| Print-Ready PDF bookletsFormatted dual-column exam sheets and automated answer sheets | — | |||
| Custom Export BrandingReplace Refraxi branding on PDF booklets with your own text and logo, or export unbranded | — | |||
| Markdown ExportPortable plain-text exports of exams and decks | — | |||
| Moodle XML ExportQuestion banks packaged for direct Moodle import | — | — | ||
| Canvas QTI ExportQTI packages for Canvas and compatible LMS platforms | — | — | — | |
| Community MarketplaceDownload free community resources and purchase premium packs; acquired copies land in your library as editable personal clones | ||||
| Classrooms & Telemetry | ||||
| Google Classroom SyncCourse roster import and grade push to Google Classroom | — | — | — | |
| Roster & Gradebook SyncManage user lists, roster groups, and view assignment telemetry | — | — | — | Unlimited |
| LMS Embed Integration (LTI 1.3)Grade synchronization and deep linking within Canvas and Blackboard | — | — | — | |
| LMS Registration PortalManage institutional platforms and tool client credentials | — | — | — | |
| Student Tab TelemetryImmutable logging showing window defocusing duration | — | — | — | |
| Support SLADedicated customer channels and resolution time targets | Community Support | Priority Email | Priority Email | Dedicated Manager |