Tools for Studying and Exam Prep
Flashcards, courses, and the small utilities that fit into any study routine.
Serious study is Anki + Khan Academy + a good notes app. We don't build flashcard systems (Anki has 20+ years of algorithm refinement behind it) or record video courses (Khan Academy does it for free) — but our GPA calculator, TDEE calculator (yes, sleep and food matter for cognition), and countdown timer to exam day all fit the routine.
Everyday study utilities
Fits into any study routine.
- GPA CalculatorCalculate your weighted GPA across any number of courses. Supports 4.0, 4.3, and 5.0 letter-grade scales plus 0-100 percentage.
- TDEE CalculatorCalculate your Total Daily Energy Expenditure (TDEE) — the calories you burn per day. Includes BMR (Mifflin-St Jeor), activity multiplier, and cut / maintain / bulk targets.
- Countdown TimerCount down to any date and time, second by second. Add a label and share the URL — everything lives in the link, no login required.
- Date Difference CalculatorCalculate the number of days between two dates in three modes: total calendar days (with weeks / hours / years-months-days breakdown), working days (weekends excluded, custom holidays optional), or US business days (federal holidays excluded automatically with observed-day shifts).
- Text to SpeechPaste any text and hear it read aloud in your choice of voice. Adjust rate and pitch. Uses your device's built-in voices — nothing is uploaded, no account needed.
- Word CounterInstantly count words, characters, sentences, paragraphs, lines, and reading time. Everything happens in your browser — nothing is uploaded.
Or reach for a broader tool
Third-party products that fit this use case. Our built-in tools cover the small technical jobs; these cover the bigger workflows around them. External links, hand-picked, not sponsored.
| Tool | Pricing | Best for | Tier |
|---|---|---|---|
| Anki Spaced-repetition flashcards for long-term retention. | Free (desktop/Android/web) · iOS app $25 one-time | Serious students memorising large volumes (medical school, language learning, competitive exams). | Freemium |
| Quizlet Flashcards + practice tests + AI study help. | Free (with ads) · Plus from $35.99/year | Casual students studying for tests who want quick flashcard sets and a friendlier UI than Anki. | Freemium |
| Khan Academy Free video courses covering K-12 through early college. | Free (nonprofit, donation-supported) | Students filling gaps in fundamentals or prepping for standardised tests. | Free |
- AnkiFreemiumSpaced-repetition flashcards for long-term retention.
- Algorithmic spacing — cards you struggle with come back sooner
- Community-shared decks for common exams (MCAT, USMLE, language, chess)
- Sync across all devices with free AnkiWeb account
Best for: Serious students memorising large volumes (medical school, language learning, competitive exams).Free (desktop/Android/web) · iOS app $25 one-timeVisit Anki - QuizletFreemiumFlashcards + practice tests + AI study help.
- Massive library of user-created flashcard sets
- Multiple study modes (learn, write, spell, match)
- AI tutor + practice test generator (paid)
Best for: Casual students studying for tests who want quick flashcard sets and a friendlier UI than Anki.Free (with ads) · Plus from $35.99/yearVisit Quizlet - Khan AcademyFreeFree video courses covering K-12 through early college.
- Structured courses in math, science, economics, computing, humanities
- Practice problems with hints + step-by-step solutions
- Free SAT + LSAT prep (official partnerships)
Best for: Students filling gaps in fundamentals or prepping for standardised tests.Free (nonprofit, donation-supported)Visit Khan Academy