Omni Calculator vs Engineering Equation Solver (EES)

Omni Calculator7.7Visit EEEngineering Equation Solver (EES)6.9Visit

Higher score Omni Calculator #3 in Calculators 7.7/10 Free plan Free plan✓ 4 of 6 features Try Omni Calculator

vs

EE Engineering Equation Solver (EES) #7 in Calculators 6.9/10 From $160 · 30-day trial ✓ 4 of 6 features Visit EES

• Omni Calculator fits best

  People seeking specialized calculators and worked examples

• Engineering Equation Solver (EES) fits best

  Engineers solving complex equation systems

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Side by side

Feature	Omni Calculator 7.7/10 Visit ↗	EEEngineering Equation Solver (EES) 6.9/10 Visit ↗
At a glance
Editor score	7.7	6.9
Ranking	#3 in Calculators	#7 in Calculators
Best for	People seeking specialized calculators and worked examples	Engineers solving complex equation systems
Pricing model	Free	Paid
Starting price	Not published	Not published
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Cloud, Mobile	Desktop
Platforms	Web, Android	Windows
Support	Email, Docs	Email, Phone, Docs
Integrations	1 integrations	3 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Omni Calculator 4/6 · Engineering Equation Solver (EES) 4/6
Scientific functions	✓	✓
Graphing	✓	✓
Equation solver	✓	✓
Financial functions	✓ (best)	Not published
Offline mode	Not published	✓ (best)
Calculation history	Not published	Not published
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.	Solves nonlinear algebraic and differential equation systems. Includes thermodynamic and transport property functions. Supports parametric studies, uncertainty analysis, and plotting.
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.	Runs on Windows only. Commercial and Professional license prices are not stated here. Advanced optimization and automation features are limited to Professional.
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 →	Engineering Equation Solver (EES) is a Windows desktop program for engineers and others who regularly work with equation-based problems. It solves nonlinear algebraic and differential systems, and includes thermodynamic and transport… Read the review →

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.

• Engineering Equation Solver (EES) — where it wins

  • Solves nonlinear algebraic and differential equation systems.
  • Includes thermodynamic and transport property functions.
  • Supports parametric studies, uncertainty analysis, and plotting.

  Where it doesn't

  • Runs on Windows only.
  • Commercial and Professional license prices are not stated here.
  • Advanced optimization and automation features are limited to Professional.

• Omni Calculator7.7/10 · Free plan

  A free library of specialized calculators with explanations, conversions and two-way inputs.

  Try Omni CalculatorFull verdict →
• EEEngineering Equation Solver (EES)6.9/10 · From $160 · 30-day trial

  A Windows equation solver for engineers working with complex systems and properties.

  Visit EESFull verdict →