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Head-to-head · Calculators

Omni Calculator vs Calc Pro

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Omni Calculator #3 in Calculators 9.0/10 Free plan Free plan✓ 4 of 6 features Try Omni Calculator
Calc Pro #5 in Calculators 8.8/10 Free plan Free plan✓ 5 of 6 features Visit Calc Pro

Omni Calculator leads on 0 checks, Calc Pro on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOmni Calculator · 9.0/10
  • Free planboth
  • Most featuresCalc Pro · 5 of 6

Omni Calculator scores higher on our rubric for calculators: 9.0 against 8.8 out of 10; our editors rank them #3 and #5.

Omni Calculator is the better fit for people seeking specialized calculators and worked examples. Calc Pro is the better fit for people wanting broad calculator tools on many devices.

  • Omni Calculator fits best

    People seeking specialized calculators and worked examples

  • Calc Pro fits best

    People wanting broad calculator tools on many devices

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Omni Calculator 9.0/10 Visit ↗ Calc Pro 8.8/10 Visit ↗
At a glance
Editor score 9.0 8.8
Ranking #3 in Calculators #5 in Calculators
Best for People seeking specialized calculators and worked examples People wanting broad calculator tools on many devices
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Mobile Cloud, Desktop, Mobile
Platforms Web, Android Web, Windows, iOS, Android
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Omni Calculator 4/6 · Calc Pro 5/6
Scientific functions ✓ ✓
Graphing ✓ ✓
Equation solver ✓ (best) Not checked yet
Financial functions ✓ ✓
Offline mode Not checked yet ✓ (best)
Calculation history Not checked yet ✓ (best)
Our review
Pros
  • Thousands of calculators span math, science, finance, health and construction.
  • Two-way inputs, unit conversions and currency conversions help solve varied problems.
  • Articles explain formulas; Android adds search, favorites and recent calculators.
  • Covers standard, scientific, graphing, financial, statistical, and date tools
  • Runs on web, Windows, iOS, and Android with offline mode
  • Tape history supports copying or emailing recent equations
Cons
  • The Android app is available, but iOS is not offered.
  • Locally saved input values are limited to the browser.
  • It focuses on calculations rather than building custom spreadsheets or formulas.
  • Edition choices include ad-supported or free-download versions
  • No open-source edition is offered
  • Stated fit centers on solo users and small organizations
Our verdict

Omni Calculator is a free library of specialized calculators for students, professionals and general users who want answers without building formulas themselves. Its web and Android offerings cover math, science, finance, health,…

Read the review →

Calc Pro brings everyday arithmetic, advanced scientific functions, graphing, financial worksheets, statistical analysis, unit and currency conversion, and date-and-time calculations into one suite. It is aimed at students and…

Read the review →
  1. Omni CalculatorCalculators 9.0Free plan
  2. Calc ProCalculators 8.8Free plan

Strengths and trade-offs

  • Omni Calculator — where it wins

    • Thousands of calculators span math, science, finance, health and construction.
    • Two-way inputs, unit conversions and currency conversions help solve varied problems.
    • Articles explain formulas; Android adds search, favorites and recent calculators.

    Where it doesn't

    • The Android app is available, but iOS is not offered.
    • Locally saved input values are limited to the browser.
    • It focuses on calculations rather than building custom spreadsheets or formulas.

  • Calc Pro — where it wins

    • Covers standard, scientific, graphing, financial, statistical, and date tools
    • Runs on web, Windows, iOS, and Android with offline mode
    • Tape history supports copying or emailing recent equations

    Where it doesn't

    • Edition choices include ad-supported or free-download versions
    • No open-source edition is offered
    • Stated fit centers on solo users and small organizations

More comparisons

All calculators comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update