The app features large, easy-to-read keys for fast input and a permanent display of the user's expression. Results appear automatically as typing occurs, eliminating the need for an equals key.
by Andre Ponzo★ 4.84 ratingsProductivity$1.99Data updated 2026-09-12
Practice tests for TOEIC, TOEFL, IELTS, and GMAT. Record answers digitally without paper. View sheets and track progress. Simulate real conditions. Export results and review mistakes.
Convert numbers between , octal, decimal, and hexadecimal systems. Perform step-by-step conversions. Adjust application theme, set maximum digits in fractional results, choose negative number representation, and limit bits in negative outputs.
Simulate the HP-70 financial calculator with loan amortization, saving plans, depreciation, and storage registers. View stack contents in popup windows. Perform financial calculations with enhanced accuracy and additional storage options.
The app calculates loan payments, interest rates, present value, and future value. Values are displayed above the keys for easy reference on the user's iPhone and iPad.
Verify card validity by scanning a barcode or entering a CIN. Compare the CIN against a canceled list. If canceled, display a warning. If valid, check the expiration date on the card's front.
Enter math to . Input numerical or literal , fractions, powers, and periodic numbers. Check correctness with a preview and step by step. Requires internet connection. Results are automated and may not always be accurate.
Minimize logic expressions with minterms or truth tables. Support don't care terms and up to four inputs with two outputs. Export results to text files. Available in multiple languages.