Comparison

CALCOs vs Flex Calculators

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

CALCOs

Features
Read full description

Calco is a fast, simple, and reliable calculator designed for those who need clear results without distractions. Its clean interface makes it easy to perform basic math operations in seconds, whether for personal, school, or work calculations. In addition to essential arithmetic functions, Calco automatically saves a history of your recent calculations, allowing you to review, copy, or reuse them whenever you need. Key Features: Basic operations: addition, subtraction, multiplication, and division. Calculation history accessible at all times. Intuitive and easy-to-use interface. Optimized for fast and stable performance on any iOS device. Compatible with light and dark modes. With Calco, you have a practical, secure, and straightforward tool for your daily calculation needs, without intrusive ads or unnecessary features.

About

Flex Calculators

Features
Read full description

Flex Calculators is a powerful all-in-one calculator app built for everyday problems and advanced math. Use it as your daily calculator, then switch to specialized tools for equations, calculus, statistics, finance, time, and conversions. Key features: - Scientific calculator - Fast expression input and real-time result preview - History support for quick reuse - Configurable angle mode (degrees/radians) - Real-only or complex result handling - Advanced math tools - Equation solver - System of equations and system of inequalities - Matrix calculator - Vector calculator - Derivatives and integrals - Statistics and distributions - Value table and proportion tools - Number base converter - Unit converter - Convert across many categories including: length, mass, area, volume, temperature, time, speed, force, pressure, energy, power, electrical, light, sound, data, performance, chemistry, and biology - Daily life calculators - Currency converter - Energy/fuel cost calculator - BMI/body index calculator - Loan payment calculator - Savings calculator - Date calculator - World hour/time-zone tool - Personalization and display controls - Light, dark, or system theme - Custom theme color - Multi-language interface - Decimal precision setting - Number formatting options (including thousand separators) - Ads and purchase - Banner/interstitial ads may be shown - One-time purchase option to remove ads Why users choose Flex Calculators: - One app for both basic and advanced calculations - Clean workflow for study, engineering, and daily finance tasks - Practical tools that reduce the need to install multiple calculator apps Whether you need quick arithmetic, equation solving, conversions, or planning daily expenses, Flex Calculators helps you solve it faster.

Screenshots

CALCOs4 screens
Flex Calculators4 screens

Verdict

The call

The clearest difference is in-app purchases: CALCOs at none against Flex Calculators's 1. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Flex Calculators sells 1 one-off in-app purchase. CALCOs asks for nothing beyond the download.

Scorecard1 real difference ยท 5 level
CALCOs versus Flex Calculators: the parameters behind the verdict, then further details
ParameterCALCOsFlex Calculators
PriceFreeFree
Update frequencyโ€”Every 10 days
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details โ€” not scored
Size24 MB37 MB
Age rating4+4+
DeveloperSportrade OUAn Le

In-app purchases

None

CALCOs

No in-app purchases

1 purchases

Flex Calculators

One-time1
  • Remove Ads$4.99

Questions

Is CALCOs free?
CALCOs is free to download, with no in-app purchases.
Is Flex Calculators free?
Flex Calculators is free to download, with in-app purchases available.
Do CALCOs or Flex Calculators have ads?
Neither CALCOs nor Flex Calculators shows ads.

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