SciCalc Pro vs Stillkeen

Meet SciCalc Pro—a fast, precise scientific calculator built for real work. From everyday math to university-level statistics, it delivers pro-grade results with a clean interface, history, and a searchable in-app user guide. Why you’ll love it Accurate results you can trust High-precision math with careful numerics under the hood. Advanced statistics & probability PDFs, CDFs, and inverse CDFs (quantiles) for Normal, t, χ², F, Binomial, Poisson, Negative Binomial, and Hypergeometric. Built-in regression tools Linear, quadratic, logarithmic, and exponential fits with r and r². Complex numbers made easy cis(θ), rectangular/polar forms, conjugate, argument, and formatting. Clear modes & syntax Degrees/radians, scientific notation (EE), powers/roots, logs, and more. History & user guide Review previous calculations and search the integrated manual for functions, examples, and tips. Thoughtful percent behavior Intuitive operations for add/subtract/multiply/divide by percent. Key functions (non-exhaustive) Core math: sin, cos, tan, asin, acos, atan, sqrt, abs, exp, ln, log10, powers x^y Statistics: mean, variance, standard deviation, regressions (linear, quadratic, logarithmic, exponential) Distributions: Normal, Student’s t, Chi-Square, F, Binomial, Poisson, Negative Binomial, Hypergeometric with PDF/CDF/Inv Whether you’re studying, engineering, teaching, or double-checking a dataset, SciCalc Pro gives you the precision and control you need—without the clutter.

Mind wandering between tasks? Give it a challenge: spot a change, remember a sequence, or choose the ink color instead of reading the word. GAMES FOR A LITTLE DOWNTIME Play Sudoku or reveal 60 Nonogram pictures in the Games tab. These relaxing games are separate from training and do not affect your KTI or training statistics. New installations in regions with Premium receive 8 new games per day, shared across both games; continuing a saved game does not use a turn. Premium includes unlimited games. Previous free access is retained for people who trained before version 1.3.1; limits do not apply where Premium is unavailable. Game progress stays on this device and is not included in encrypted training backups. FIND YOUR NEXT CHALLENGE Race through Classic Schulte or alternate red numbers up and blue numbers down in Color relay, with grids from 3×3 to 6×6. Spot a moved or missing object in Change Detective. Visit every stop in Route Planning, recall everyday items in Shopping List, or rotate pieces to fill a shape in Rotation Assembly. Without Premium, the Today tab gives you a plan of three exercises a day, chosen for you, plus the daily challenge. Choosing any exercise yourself, playing as often as you like, and Shopping List and Rotation Assembly require Stillkeen Premium. Instructions and practice rounds help you get started. MAKE YOUR EFFORT VISIBLE See time, accuracy and rhythm where supported. Revisit sessions by date, compare results under matching conditions and collect badges for practice milestones. Follow changes in your KTI training index as you build your routine. GO DEEPER WITH STILLKEEN PREMIUM Premium access adds unlimited training with every exercise in the library, advanced exercises, custom plans, deeper insights and guided programs, including the 14-session Memory Builder course. Encrypted backup and restore on iOS help you keep your history. Eligible customers can try the monthly plan for 3 days or the annual plan for 7 days. Plans automatically renew at the amount shown at checkout unless canceled. Manage or cancel in your Apple Account settings. A lifetime option provides the same Premium features, and existing lifetime owners keep their access. ABOUT 5 MINUTES. A CLEAR NEXT STEP. Open Today and follow your daily plan, one exercise at a time. See what's complete and what's next, with an optional daily challenge for variety. A Home Screen widget keeps your next exercise and weekly activity in view. No account. No ads. Your practice history stays on your device; backup starts only when you request it. Stillkeen is a training utility, not a medical assessment. It does not diagnose, treat, prevent or cure medical conditions. Premium enrollment is currently unavailable in mainland China. Plan and trial availability vary by region. Terms of Use: https://stillkeen.minigamesdesign.com/terms/ Privacy Policy: https://stillkeen.minigamesdesign.com/privacy/