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CLUSTER CALCULATOR-SCIENTIFIC-FUNCTIONS · 43 ENTRIES · EARLIEST ENTRY 2010-10-22

Multi-function calculator apps

This cluster comprises calculator apps that extend beyond basic arithmetic with unit conversion, scientific functions, and specialized modes such as programmer, graphing, or physical-unit handling. Dated entries prior to the index start show a sporadic distribution, with occasional single entries from 2009 onward and a slight increase in frequency from 2020 to 2026, but no consistent trend. The traction leaders, CalcLab: Smart Unit Converter, calculator-flutter, and DayCalc - Note Calculator, each have zero stars, indicating minimal user engagement.

Entry timeline

ENTRY TIMELINE

OCT 2009: 1OCT 2010: 1MAR 2011: 1AUG 2012: 1OCT 2012: 1JUN 2013: 1FEB 2014: 1AUG 2016: 1DEC 2016: 1MAR 2017: 1FEB 2019: 1MAY 2020: 1AUG 2020: 1OCT 2021: 1DEC 2021: 1JAN 2022: 1FEB 2022: 1MAY 2022: 1JUN 2022: 1JUL 2022: 1OCT 2022: 1DEC 2022: 1SEP 2023: 1MAR 2024: 1APR 2024: 1MAY 2024: 1JUL 2024: 1SEP 2024: 1OCT 2024: 1MAR 2025: 1JUL 2025: 1MAR 2026: 2MAY 2026: 1AUG 2026: 4SEP 2026: 5
OCT 2009SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 6 hand-coded · 13 unlabelled

Operator · 1 hobby · 3 commercial · 12 open source · 4 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 21yetCalc0★11 mostaleliveopen sourceMobile calculator app offering scientific functions, a customizable unit converter, and a programmer mode with number system conversions.
  2. 22OpenCalc0★1 yrabandonedliveopen sourceAndroid calculator app that provides basic and scientific operations with history and customizable themes.
  3. 23Calculator: Unit Converter0★5 yrabandonedlivehand-codedMobile calculator app that handles basic and scientific arithmetic plus currency, unit, world time, health, and GPA conversions.
  4. 24ExprEval0★9 yrabandonedlivehand-codedopen sourceAndroid calculator app that solves mathematical expressions with variables, custom functions, and evaluation steps.
  5. 25DozenCalc0★6 yrabandonedlivehand-codedopen sourceCalculator app for dozenal arithmetic with simple and scientific modes, supporting trigonometric functions and variable precision.
  6. 26swift-calc1★6 mostale—hobbyMulti-mode calculator web app offering standard, scientific, graphing, financial, and unit-conversion tools with calculation history and theme switching.
  7. 27WolframAlpha Classic0★6 mostalelivecommercialMobile app that answers factual and computational questions across science, math, finance, and everyday topics using a knowledge and computation engine.
  8. 28Unitto — calculator and unit converter0★6 mostaleliveopen sourceMobile app that calculates expressions, converts between 601 units and currencies, and includes date, time, and BMI calculators.
  9. 29Fossify Calculator Beta0★8 mostalelivehand-codedopen sourceOffline mobile calculator app that handles basic and advanced arithmetic, keeps a calculation history, and lets users customize colors and settings.
  10. 30Qalculate!0★13 daysliveopen sourceMulti-purpose calculator app that handles unit conversions, physical constants, symbolic math, and arbitrary precision calculations.
  11. 31CalConvert: Pro Calculator $€0★11 mostalelivecommercialCalculator app that performs scientific math, converts between hundreds of units, provides foreign exchange rates, and displays world clock times.
  12. 32android-hesap-app0★1 yrabandonedliveai-builtMobile app that helps users perform calculations and manage account-related figures.
  13. 33Calculator·0★16 dayslivecommercialCalculator app for basic arithmetic, square and root functions, with multiple color themes and an optional premium subscription.
  14. 34Calculator You: Math & Units0★1 yrabandonedliveopen sourceA calculator application that offers scientific mode, unit conversion, calculation history, and customizable themes to support everyday mathematical tasks.
  15. 35Programmer Calculator - Dev0★1 yrabandonedliveMobile calculator app for developers to convert numbers between bases and compute CRC values for strings or hex bytes.
  16. 36GUTCalc Physics Unit Converter0★2 yrabandonedliveScientific calculator app that evaluates free-form expressions containing units and physical constants, converting between SI, CGS, and natural unit systems.
  17. 37Uno Calculator0★3 yrabandonedliveopen sourceCalculator app that provides standard, scientific, and programmer calculation functions.
  18. 38Hertz contact0★3 yrabandonedliveopen sourceCalculator app for static ball-on-flat contact mechanics that computes stress and deformation from material properties.
  19. 39Calculator0★4 yrabandonedlivehand-codedopen sourceCalculator app with simple and advanced modes, theme options, history, and haptic feedback.
  20. 40Calculator Notification0★4 yrabandonedlivehand-codedopen sourceAndroid app that provides a calculator in the notification drawer for quick access.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.