All 51 apps
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
ArityCalcTop 8woheller69	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 M3Gergely Vagujhelyi	Clean, private calculator — no tracking, no ads, optional on-device AI	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
DayCalcyTop 8Veevek	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
DumberKitTop 8lbockaj	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
liftmathTop 8Munzzyy	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
NerdCalciTop 8Vishal 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 CalculatorTop 8rag-creation	A clean, calculator with live results and unit conversion	Free	12 Oct 2026	Android 7.0+	F-Droid
OpenCalcDarkempire78	Simple and beautiful calculator for Android	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 8Jost Herkenhoff	Powerful and versatile multi-purpose calculator	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
UnittoSad Ellie	Calculate and convert anything	Free	25 Mar 2026	Android 6.0+	F-Droid
VanillaTop 8sosauce	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.

These eight are sorted by how complete and recent their facts are. A person has not labelled winners yet. How we choose