OpenCalc

github.com ↗

An Android calculator with scientific mode and history

Visit site ↗ Save

SI Score: 40/100
Pricing: Open Source AI reading, not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

android-calculator scientific-mode

Ask SI about OpenCalc

Answers use saved listing facts and recorded sources.

What it does

OpenCalc is an Android calculator with a scientific mode, calculation history and portrait or landscape layouts.

OpenCalc provides scientific mode and calculation history on Android 5.0 or later, with portrait and landscape layouts. A quick-settings tile and locked-screen availability offer additional entry points. The GPLv3 repository says version 2.0.0 replaced mXparser with its own algebra system; compatibility with that older parser should not be assumed. Its feature list describes the calculator modes, without specifying angle defaults or a history-export format.

Strengths

Scientific mode and result history
Portrait and landscape layouts

Watch out for

Requires Android 5.0 or later

Best for

Everyday and scientific calculations on Android

Sources

GitHub - clementwzk/OpenCalc: A simple and beautiful calculator for Android downloaded more than 300k times · GitHub (Oct 26, 2026)

SI Score

40/100

#188 in Calculators

Based on published information. No hands-on task test.

Method 2.0 · Saved catalogue only Assessed Oct 26, 2026Score ceiling for this evidence: 59/100.

Product usefulness 40

Evidence

Official material identifies useful scientific/history modes and Android access, but supplies only a feature catalogue rather than a specific controlled expression/history workflow.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

github.com/clementwzk/OpenCalc
- PricingAI reading, not confirmedChecked Oct 26, 2026
  The official repository states the project is licensed under GPLv3.
- PlatformsAI reading, not confirmedChecked Oct 26, 2026
  The official repository describes an Android calculator and specifies Android 5.0 or later.
- Open sourceAI reading, not confirmedChecked Oct 26, 2026
  The official repository specifies GPLv3 licensing.
- Product usefulness evidenceChecked Oct 26, 2026

Browse this categoryMore Calculators tools

Something wrong or out of date? Send a correction and an editor will check it against the site. Owners can verify their site first so their corrections are marked as coming from the owner. Owners cannot change the score.

Suggest a correction Claim this listing