Apps by David Kelen
@CalcMaster app icon

Games

@CalcMaster

David Kelen

Free download In-app purchases unconfirmed
Open on Apple

About this app

@CalcMaster turns quick mental math into a daily puzzle habit. Each day you’ll face a hidden equation: guess numbers and operators, get color‑coded feedback on what’s correct, and use logic (not luck) to solve it before you run out of tries. Build a streak by coming back every day, tracking your progress on the calendar, and watching your best streak grow as you rack up points. Whether you’ve got 30 seconds or 10 minutes, it’s a fast, satisfying way to sharpen your math instincts. Play solo or with friends: add people you know, compare scores on a live leaderboard, send and accept friend requests, and browse profiles and stats to see who’s really the sharpest. Earn points as you play and spend them in the shop on new profile emojis and backgrounds to show off your style while you climb the ranks. Sign in with Game Center to submit your total points and best streak to global leaderboards and unlock achievements as you hit new milestones; games played, win streaks, total wins, and lifetime points. @CalcMaster also works offline, saving games locally and syncing them automatically the next time you’re online, so your streak and stats stay up to date wherever you play.

Latest release

What’s New

Version 1.1.0 Aug 4, 2026

This version introduces: - several languages to the app, such as French, Spanish and Hungarian - bug fixes and improvements - major stability fixes Thank you using @Calcmaster

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 21, 2026 · 0 ratings Aug 21, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 21, 2026 · Free Aug 21, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 21, 2026 · 11:09 PM Free

Screenshots

@CalcMaster iPhone screenshot@CalcMaster iPhone screenshot@CalcMaster iPhone screenshot@CalcMaster iPhone screenshot