Productivity Tools
6 free productivity tools. Browser-based. No signup. Privacy-first.
What is Productivity Tools?
Productivity tools are free, browser-based aids for studying and time management — GPA and grade calculators, random group generators, flashcard makers, a Pomodoro timer and an exam countdown. They run client-side with no signup.
What are productivity tools?
Stay on top of study and schedules: compute a GPA or the grade you need, split a class into random groups, build flashcards to revise, run focused Pomodoro sessions, or count down to an exam. Small tools that remove everyday friction.
They run in your browser — free, private, and ready whenever you are.
Why client-side?
- Privacy: sensitive data (API keys, payloads, passwords) never leaves your device.
- Speed: no network round-trip — results appear as you type.
- Reliability: works offline once loaded.
- Cost: always free, no signup or rate limits.
Browse Productivity Tools
Study Tools · 4
GPA Calculator
Credit-weighted GPA on the 4.0 scale — add courses, grades and credits. Client-side; grades stay private.
Open toolGrade Calculator
Weighted grade from categories, plus “what do I need on the final”. Client-side.
Open toolRandom Group Generator
Fairly split a class or team into random groups by count or by size. Re-roll any time. Client-side.
Open toolFlashcards Maker
Build flashcard decks and study them shuffled with a score. Saved locally — no account needed.
Open toolFrequently asked questions
Are these productivity tools free?
Yes. Every tool is free to use in your browser with no signup required.
Does the flashcard maker save my cards?
Cards are kept in your browser’s local storage so they persist between visits on the same device, without any account or upload.
Build, share, and grow on Zerethon Social
Free signup. Earn points, collect achievements, and connect with creators worldwide.