123 Calculator: Reverse Keypad

By ZHUO KANG on AppTrack Ninja.

Phone-Style Calculator

123 Calculator is a focused calculator with a phone-style keypad: 1, 2, and 3 start on top. Tap 1 ⇄ 7 to switch instantly between phone order and traditional calculator order. It includes four-function arithmetic, percentages, decimals, repeated equals, adaptive number display, haptic feedback, and VoiceOver labels. Calculations run locally on your iPhone. No account, network connection, ads, tracking, or permissions required.

Categories: Utilities

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