Best overall
CALCU
Candl Apps
Everyday sums with a clean keypad and a history you can scroll. Themes stay out of the way of the maths.
Checked 17 Oct 2026—
Calculator
Replace your Calculator. Start with these.
As of 17 Oct 2026, 55 apps can replace the Calculator on Android. These 8 are where we'd start.
The top 3
Best for science
HiPER Scientific Calculator
HiPER Development Studio
A scientific calculator with fractions, graphs and a huge function list, without leaving the keypad.
Checked 17 Oct 2026—
Best for graphs
The graphing calculator students already know. Plot, slide and see the maths move.
Checked 17 Oct 2026—
Also great. Five more.
Picked by hand, 17 Oct 2026Write a sum by hand and watch it turn into typed maths
Google Play
A calculator for units, conversions and serious maths
F-Droid
A converter that also does everyday calculator work
F-Droid
A simple calculator with a clean keypad and a history
F-Droid
A calculator drawn in Material 3
F-DroidSee all 55 appsShow the top 8 only
51 apps · sorted by name
| App ▲ | What it does | Price | Updated ▼ | Min Android ▼ | Get it |
|---|---|---|---|---|---|
AlexCalcAlex Barry |
Scientific calculator with LaTeX equation display, buttons and plaintext input | Free | 2 Jun 2026 | Android 6.0+ | F-Droid |
ArityCalcwoheller69 |
Scientific calculator for Android 5+ | Free | 2 Oct 2026 | Android 5.0+ | F-Droid |
CalculatorARITRA BELEL and SHOURYA S GHOSH |
A Soft UI Calculator | Free | 28 Jan 2022 | Android 5.0+ | F-Droid |
Calculator M3Top 8Gergely Vagujhelyi |
A calculator drawn in Material 3 | Free | 1 Jul 2026 | Android 8.0+ | F-Droid |
Calculator NotificationAnton Tananaev |
Move your Calculator into the notification drawer | Free | 5 Jun 2022 | Android 4.1+ | F-Droid |
Calculator You |
Calculator You is a beautiful calculator for solving simple tasks | Free | 22 Jan 2025 | Android 8.1+ | F-Droid |
Calculator++Sergey Solovyev |
Scientific calculator with sleek interface and powerful capabilities | Free | 15 Nov 2023 | Android 5.0+ | F-Droid |
CalcYouYou Apps |
Privacy Focused Calculator app built with MD3 | Free | 28 Jul 2026 | Android 6.0+ | F-Droid |
Compound CalculatorSam Yu |
Simple offline compound interest calculator | Free | 3 Jun 2026 | Android 6.0+ | F-Droid |
dahliaOS CalculatordahliaOS |
Perform basic calculations | Free | 24 Jun 2022 | Android 4.1+ | F-Droid |
DayCalcyVeevek |
Simple ofline date calculator with reminder | Free | 15 Oct 2026 | Android 7.0+ | F-Droid |
DebtCalcPranjal Verma |
Calculating the debt at your finger tips | Free | 22 Sept 2021 | Android 5.0+ | F-Droid |
Dib2Calc |
The crazy calculator (RPN mode). Once you get used to it, you will love it :-) | Free | 5 Dec 2025 | Android 5.0+ | F-Droid |
Digital CalculatorAditya R |
A neumorphic themed digital calculator which has keyboard and dark mode support | Free | 11 May 2025 | Android 5.0+ | F-Droid |
Distribution CalculatorNuño Sempere |
Easily operate with uncertainty | Free | 24 Jul 2025 | Android 7.0+ | F-Droid |
DozenCalc |
A dozenal (duodecimal, or base twelve) calculator | Free | 2 May 2020 | Android 4.2+ | F-Droid |
DriveSoberlyJohan Py |
Alcohol blood rate computer for driving | Free | 13 Jun 2026 | Android 5.0+ | F-Droid |
DumberKitlbockaj |
Calculator and unit converter for keypad phones, typed on the keypad | Free | 14 Oct 2026 | Android 8.0+ | F-Droid |
Expression Evaluator |
A simple math expression evaluator | Free | 29 May 2025 | Android 8.1+ | F-Droid |
ExprEval |
Math expression calculator with variables and functions support | Free | 17 Jan 2017 | Android 4.0.3+ | F-Droid |
Extended emulator of МК 61/54Vadym Khokhlov |
Emulator of "Electronika МК 61/54" RPN programmable calculators | Free | 10 Mar 2022 | Android 4.4+ | F-Droid |
Fossify Calculator BetaFossify |
Simple and calculator for quick and easy calculations | Free | 2 Feb 2026 | Android 8.0+ | F-Droid |
Fourth Tools |
Useful tools app | Free | 26 Oct 2022 | Android 5.0+ | F-Droid |
Graph 89Everet Anema |
A TI Graphing Calculator Emulator | Free | 9 Jan 2026 | Android 4.4+ | F-Droid |
Inflation Calculatorcorenting |
Inflation calculator for various countries | Free | 22 Feb 2026 | Android 6.0+ | F-Droid |
Is it PrimeBodo Bauer |
Prime number check | Free | 1 Dec 2025 | Android 14+ | F-Droid |
JRPN 16cBill Foote |
Programmer's calculator similar to an HP 16c | Free | 22 Jul 2021 | Android 4.0.3+ | F-Droid |
liftmathMunzzyy |
Gym calculator: 1RM, plates, warm-ups, strength scores, records, rest timer | Free | 4 Oct 2026 | Android 7.0+ | F-Droid |
LoanProMichael Kaltner |
Fast mortgage, auto, credit, and personal loan calculations | Free | 25 Jun 2026 | Android 5.0+ | F-Droid |
Mather |
A powerful expression-based calculator, unit converter, and computation engine | Free | 6 Jan 2017 | Android 4.4+ | F-Droid |
microMathematics Plus |
Computer algebra system | Free | 1 Mar 2026 | Android 4.0+ | F-Droid |
NerdCalciVishal Telangre |
Calculator for nerds with variables, syntax highlighting, and file sessions | Free | 14 Oct 2026 | Android 6.0+ | F-Droid |
Neumorphic CalculatorMohammed Ragheb |
A sleek, customizable calculator with a soft, modern, neumorphic-inspired design | Free | 13 Aug 2025 | Android 5.0+ | F-Droid |
Numio Calculatorrag-creation |
A clean, calculator with live results and unit conversion | Free | 12 Oct 2026 | Android 7.0+ | F-Droid |
OpenCalcTop 8Darkempire78 |
A simple calculator with a clean keypad and a history | Free | 17 Apr 2025 | Android 5.0+ | F-Droid |
PariDroid |
PARI/GP is a computer algebra system designed for computations in number theory | Free | 18 Feb 2026 | Android 4.4+ | F-Droid |
Qalculate!Top 8Hanna Knutsson |
A calculator for units, conversions and serious maths | Free | 28 Sept 2026 | Android 8.0+ | F-Droid |
Rental CalcBranden Archer |
Evaluate rental property investment prospects | Free | 7 Jan 2019 | Android 4.1+ | F-Droid |
RPNATH0 |
Reverse Polish Notation Calculator | Free | 12 Jun 2024 | Android 4.0.3+ | F-Droid |
RPNscoutant |
Very easy to use RPN Calculator | Free | 24 Jan 2022 | Android 9+ | F-Droid |
RPNcalcAlexei Pesic |
A simple, modern calculator that uses RPN (Reverse Polish Notation) | Free | 16 Jun 2023 | Android 5.1+ | F-Droid |
SchulrechnerJoris Yidong Scholl |
The calculator you know from school | Free | 9 Jun 2026 | Android 7.0+ | F-Droid |
SoulCalcAlbert Zenkoff |
Notepad-style calculator with variables, line references, multi-line support | Free | 31 Jul 2026 | Android 7.0+ | F-Droid |
Tip Calculator |
Simple tip calculator that operates on pre-tax amount | Free | 12 Aug 2024 | Android 5.0+ | F-Droid |
Tirailleur |
A practical ballistic calculator for precision rifle shooting | Free | 13 May 2026 | Android 7.0+ | F-Droid |
UnittoTop 8sadellie |
A converter that also does everyday calculator work | Free | 25 Mar 2026 | Android 6.0+ | F-Droid |
Vanillasosauce |
A cute and elegant calculator app for Android | Free | 14 Oct 2026 | Android 7.0+ | F-Droid |
VAT CalculatorBinary Solutions |
Calculate VAT for any country in the world | Free | 24 Jul 2025 | Android 5.0+ | F-Droid |
Voucher CalcTobias Mueller |
Calculates how many vouchers you need to use | Free | 28 Jul 2016 | Android 4.0.3+ | F-Droid |
WriteOn3zpnix |
A clean function-based intuitive note-taking app with Material You design | Free | 8 Sept 2025 | Android 8.0+ | F-Droid |
yetCalcYet-Zio |
Progressive calculator, converter and much more | Free | 3 Nov 2025 | Android 9+ | F-Droid |
'Top 8' marks the apps above. Data from F-Droid and hand-checked entries, as of 17 Oct 2026.
How we pick the top 8: a person tries the apps and checks each maker's page, then writes the labels down with a date. How we choose