Replace your Calculator. 51 alternatives. 51 open source, 0 closed.
As of 17 Oct 2026, 51 apps can replace the Calculator on Android: 51 open source and 0 closed source. Sorted by name; change the sort or filter by type below.
All · Open source · Closed source
| App | Type | Licence or price | Updated | Min Android | Good to know | Get it |
|---|---|---|---|---|---|---|
AlexCalcAlex Barry Scientific calculator with LaTeX equation display, buttons and plaintext input |
Open source | AGPL-3.0-only | 2026-06-02 | Android 23 | — | F-Droid |
ArityCalcwoheller69 Scientific calculator for Android 5+ |
Open source | Apache-2.0 | 2026-10-02 | Android 21 | — | F-Droid |
CalculatorARITRA BELEL and SHOURYA S GHOSH A Soft UI Calculator |
Open source | BSD-3-Clause | 2022-01-28 | Android 21 | — | F-Droid |
Calculator M3Gergely Vagujhelyi Clean, private calculator — no tracking, no ads, optional on-device AI. |
Open source | GPL-3.0-only | 2026-07-01 | Android 26 | — | F-Droid |
Calculator NotificationAnton Tananaev Move your Calculator into the notification drawer |
Open source | Apache-2.0 | 2022-06-05 | Android 16 | — | F-Droid |
Calculator You: Math & Units Calculator You is a beautiful calculator for solving simple tasks. |
Open source | GPL-3.0-only | 2025-01-22 | Android 27 | — | F-Droid |
Calculator++Sergey Solovyev Scientific calculator with sleek interface and powerful capabilities |
Open source | Apache-2.0 | 2023-11-15 | Android 21 | — | F-Droid |
CalcYouYou Apps Privacy Focused Calculator app built with MD3 |
Open source | GPL-3.0-only | 2026-07-28 | Android 23 | — | F-Droid |
Compound CalculatorSam Yu Simple offline compound interest calculator |
Open source | MIT | 2026-06-03 | Android 23 | — | F-Droid |
dahliaOS CalculatordahliaOS Perform basic calculations |
Open source | Apache-2.0 | 2022-06-24 | Android 16 | — | F-Droid |
DayCalcyVeevek Simple ofline date calculator with reminder. |
Open source | GPL-3.0-only | 2026-10-15 | Android 24 | — | F-Droid |
DebtCalcPranjal Verma Calculating the debt at your finger tips. |
Open source | MIT | 2021-09-22 | Android 21 | — | F-Droid |
Dib2Calc The crazy calculator (RPN mode). Once you get used to it, you will love it :-) |
Open source | GPL-3.0-or-later | 2025-12-05 | Android 21 | — | F-Droid |
Digital CalculatorAditya R A neumorphic themed digital calculator which has keyboard and dark mode support |
Open source | MIT | 2025-05-11 | Android 21 | — | F-Droid |
Distribution CalculatorNuño Sempere Easily operate with uncertainty |
Open source | MIT | 2025-07-24 | Android 24 | — | F-Droid |
DozenCalc A dozenal (duodecimal, or base twelve) calculator |
Open source | GPL-3.0-or-later | 2020-05-02 | Android 17 | — | F-Droid |
DriveSoberlyJohan Py Alcohol blood rate computer for driving |
Open source | Apache-2.0 | 2026-06-13 | Android 21 | — | F-Droid |
DumberKit: Calculatorlbockaj Calculator and unit converter for keypad phones, typed on the keypad |
Open source | GPL-3.0-only | 2026-10-14 | Android 26 | — | F-Droid |
Expression Evaluator A simple math expression evaluator. |
Open source | PublicDomain | 2025-05-29 | Android 27 | — | F-Droid |
ExprEval Math expression calculator with variables and functions support |
Open source | MIT | 2017-01-17 | Android 15 | — | F-Droid |
Extended emulator of МК 61/54Vadym Khokhlov Emulator of "Electronika МК 61/54" RPN programmable calculators. |
Open source | GPL-3.0-only | 2022-03-10 | Android 19 | — | F-Droid |
Fossify Calculator BetaFossify Simple and open-source calculator for quick and easy calculations |
Open source | GPL-3.0-only | 2026-02-02 | Android 26 | — | F-Droid |
Fourth Tools Useful tools app |
Open source | GPL-3.0-or-later | 2022-10-26 | Android 21 | — | F-Droid |
Graph 89Everet Anema A TI Graphing Calculator Emulator |
Open source | GPL-3.0-only | 2026-01-09 | Android 19 | — | F-Droid |
Inflation Calculatorcorenting Inflation calculator for various countries |
Open source | MIT | 2026-02-22 | Android 23 | — | F-Droid |
Is it PrimeBodo Bauer Prime number check. |
Open source | GPL-3.0-or-later | 2025-12-01 | Android 34 | — | F-Droid |
JRPN 16cBill Foote Programmer's calculator similar to an HP 16c. |
Open source | Apache-2.0 | 2021-07-22 | Android 15 | — | F-Droid |
liftmathMunzzyy Gym calculator: 1RM, plates, warm-ups, strength scores, records, rest timer |
Open source | GPL-3.0-or-later | 2026-10-04 | Android 24 | — | F-Droid |
LoanProMichael Kaltner Fast mortgage, auto, credit, and personal loan calculations |
Open source | Apache-2.0 | 2026-06-25 | Android 21 | — | F-Droid |
Mather A powerful expression-based calculator, unit converter, and computation engine |
Open source | GPL-3.0-or-later | 2017-01-06 | Android 19 | — | F-Droid |
microMathematics Plus Computer algebra system |
Open source | GPL-3.0-only | 2026-03-01 | Android 14 | — | F-Droid |
NerdCalciVishal Telangre Calculator for nerds with variables, syntax highlighting, and file sessions |
Open source | GPL-3.0-or-later | 2026-10-14 | Android 23 | — | F-Droid |
Neumorphic CalculatorMohammed Ragheb A sleek, customizable calculator with a soft, modern, neumorphic-inspired design |
Open source | MIT | 2025-08-13 | Android 21 | — | F-Droid |
Numio Calculatorrag-creation A clean, open-source calculator with live results and unit conversion |
Open source | GPL-3.0-only | 2026-10-12 | Android 24 | — | F-Droid |
OpenCalcDarkempire78 Simple and beautiful calculator for Android |
Open source | GPL-3.0-only | 2025-04-17 | Android 21 | — | F-Droid |
PariDroid PARI/GP is a computer algebra system designed for computations in number theory |
Open source | GPL-3.0-or-later | 2026-02-18 | Android 19 | — | F-Droid |
Qalculate!Jost Herkenhoff Powerful and versatile multi-purpose calculator |
Open source | GPL-2.0-only | 2026-09-28 | Android 26 | — | F-Droid |
Rental CalcBranden Archer Evaluate rental property investment prospects |
Open source | GPL-3.0-or-later | 2019-01-07 | Android 16 | — | F-Droid |
RPNATH0 Reverse Polish Notation Calculator |
Open source | GPL-3.0-or-later | 2024-06-12 | Android 15 | — | F-Droid |
RPNscoutant Very easy to use RPN Calculator |
Open source | GPL-3.0-only | 2022-01-24 | Android 28 | — | F-Droid |
RPNcalcAlexei Pesic A simple, modern calculator that uses RPN (Reverse Polish Notation). |
Open source | GPL-3.0-only | 2023-06-16 | Android 22 | — | F-Droid |
SchulrechnerJoris Yidong Scholl The calculator you know from school |
Open source | GPL-3.0-only | 2026-06-09 | Android 24 | — | F-Droid |
SoulCalcAlbert Zenkoff Notepad-style calculator with variables, line references, multi-line support |
Open source | MIT | 2026-07-31 | Android 24 | — | F-Droid |
Tip Calculator Simple tip calculator that operates on pre-tax amount |
Open source | AGPL-3.0-or-later | 2024-08-12 | Android 21 | — | F-Droid |
Tirailleur A practical ballistic calculator for precision rifle shooting. |
Open source | GPL-3.0-only | 2026-05-13 | Android 24 | — | F-Droid |
Unitto — calculator and unit converterSad Ellie Calculate and convert anything |
Open source | GPL-3.0-only | 2026-03-25 | Android 23 | — | F-Droid |
Vanillasosauce A cute and elegant calculator app for Android |
Open source | GPL-3.0-or-later | 2026-10-14 | Android 24 | — | F-Droid |
VAT CalculatorBinary Solutions Calculate VAT for any country in the world |
Open source | MIT | 2025-07-24 | Android 21 | — | F-Droid |
Voucher CalcTobias Mueller Calculates how many vouchers you need to use |
Open source | GPL-3.0-only | 2016-07-28 | Android 15 | — | F-Droid |
WriteOn: Simple Notepad3zpnix A clean function-based intuitive note-taking app with Material You design. |
Open source | GPL-3.0-or-later | 2025-09-08 | Android 26 | — | F-Droid |
yetCalcYet-Zio Progressive calculator, converter and much more. |
Open source | BSD-3-Clause | 2025-11-03 | Android 28 | NonFreeNet | F-Droid |
