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Free calculator app for the iPhone 1. No ads and super fast startup speed 2. Calculation history 3. Visual input 4. VoiceOver 5. Backspace key 6. Easy to use with one hand 7. Show or hide scientific functions 8. Keyboard sounds (19 sounds) 9. Keyboard colors (24 colors) 10. Keyboard vibration 11. Adjustable number of decimal places 12. Thousands separator 13. Scientific calculator calculator with pi calculator with exponents calculator with square root calculator with negative calculator with log calculator with trig calculator with angles and radians calculator with e calculator with factorial calculator with nth root calculator with brackets From2019219@gmail.com