Smart Calculator: Photo Math

SMARTWHO

Contains adsIn-app purchases

About this app

AI photo math solver + 27 calculators in one app. Point your camera at any equation and Smart Calculator instantly recognizes and solves it, powered by Gemini AI plus on-device ML Kit. From scientific calculator to loan, mortgage, BMI, tip, GPA, percentage, compound interest, date and unit converter - every calculation in one fast, beautifully designed app.

Whether you need a basic calculator for daily math, an AI photo math solver for homework, a scientific calculator with trigonometry, a loan calculator with amortization, or a BMI calculator for health tracking, Smart Calculator replaces multiple calculator apps.

131 city-themed interfaces inspired by Berlin, Paris, Tokyo, Seoul, New York, and more bring personalized calculator skins to suit every taste.

[AI Photo Math]
- Snap a photo of any math problem and get instant answers
- Step-by-step solutions with detailed explanations
- Function graphing for visual learning
- Text-to-speech for step narration
- Save and share solutions as PDF or image

[Basic Calculator]
- Continuous formula calculations with operator precedence
- Memory functions: MC, MR, MS, M+, M-
- Customizable decimal places and rounding modes
- Digit separators and grouping size settings
- Keypad vibration and sound feedback
- One-tap copy and transfer results

[Scientific Calculator]
- Trigonometric, logarithmic, exponential, and factorial functions
- Precise accuracy for engineering and academic work
- Bracket and operator precedence support
- Constants pi and e, degree/radian mode

[Financial Calculator]
- Loan / Mortgage Calculator: Monthly amortization with equal principal, equal principal and interest, or balloon repayment
- Savings Calculator: Simple or compound interest on deposits
- Deposit Calculator: Simple or compound interest for fixed deposits
- VAT and Discount Calculator: Auto-calculate inclusive prices and discounts
- Percentage Calculator: Increase, decrease, and ratio

[Living Calculator]
- Tip Calculator: Adjustable percentage with N-way split
- Price/Weight Analysis: Compare per gram or per 100g
- Price/Quantity Analysis: Compare per unit or per 10 units
- Fuel Efficiency / Gas Mileage / MPG Calculator

[Date Calculator]
- Date Interval / Age Calculator: Days, weeks, months, years between dates
- D-Day Calculator: Days until target date or anniversary
- Solar/Lunar Calendar Converter: Bidirectional conversion
- Menstrual Cycle / Ovulation Calculator

[Unit Converter]
- Length, area, weight, volume, temperature, speed, pressure, fuel efficiency
- Data Capacity Converter: B, KB, MB, GB, TB

[Global Tools]
- World Time: Current time in cities worldwide
- Size Conversion Table: Clothing and shoe sizes by country

[Developer Tools]
- Color Code Converter: HEX, RGB, HSL with color picker
- Base Converter: Binary, octal, decimal, hexadecimal

[Health Analysis]
- BMI calculator with ideal weight estimation
- Body fat percentage and basal metabolic rate
- Daily calorie and water intake recommendation

[Study Support]
- GPA Calculator with credit-hour weighting

[Designed for Every User]
- 131 city-themed designs (Berlin, Paris, Tokyo, Seoul, New York, more)
- Light and dark theme with system mode sync
- 70+ languages supported worldwide
- Calculation history with one-tap recall

Smart Calculator replaces multiple apps: basic calculator, scientific calculator, math calculator, financial calculator, BMI calculator, tip calculator, loan calculator, mortgage calculator, savings calculator, compound interest calculator, amortization calculator, gas mileage calculator, MPG calculator, unit converter, percentage calculator, GPA calculator, date calculator, age calculator, ovulation calculator, and all-in-one calculator.

Ratings and reviews

I really like the idea of having dedicated 0, 00, and 000 buttons—it makes input faster. However, the display feels too small and quite crowded, making the interface look busy. It would be great to have a real-time preview of the result before pressing equals. Also, the button order feels unnatural; a layout from 0 on the left to 000 on the right would feel more intuitive.

Memory Problem: Example 3 + MR = No output. The calculator can't add, subtract etc. MR. App Is a waste of money.

great, just wish it didn't reset the unit converter every time I go to a different app, but that is such a minor gripe and so far my only issue.

What’s new

[ Version 6.7.6 ]
- NEW: AI Photo Math — snap any equation for an instant solve
- Step-by-step solutions with function graphs (pinch to zoom)
- Voice readout, PDF export, share full solution as image
- Powered by Gemini 2.5 + on-device ML Kit (offline math)
- 27 calculators in 1: scientific, loan, mortgage, BMI, unit
- Crash defense improved for older Android 8.x devices
- 64 languages refreshed