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CalcBook
Your notepad that does the math
CalcBook is a natural language calculator for Android. Type like you think: coffee $4.50 + muffin $3.00 → $7.50. Works fully offline. Freelancers, travelers, students: stop switching between Notes and Calculator. CalcBook merges them.
Top comment
Hey PH! I'm Rupesh, a solo dev from India. I built CalcBook because I kept losing track of freelance invoices in my notes app. It's fully offline, free to try, and I'd love your honest feedback. What calculation would you test first?
About CalcBook on Product Hunt
“Your notepad that does the math”
CalcBook was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #130 on the daily leaderboard. CalcBook is a natural language calculator for Android. Type like you think: coffee $4.50 + muffin $3.00 → $7.50. Works fully offline. Freelancers, travelers, students: stop switching between Notes and Calculator. CalcBook merges them.
On the analytics side, CalcBook competes within Android, Productivity and Personal Finance — topics that collectively have 710.6k followers on Product Hunt. The dashboard above tracks how CalcBook performed against the three products that launched closest to it on the same day.
Who hunted CalcBook?
CalcBook was hunted by Rupesh Sappata. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CalcBook including community comment highlights and product details, visit the product overview.