Perform calculations with a vast library of built-in formulas or create your own. Save and sync custom formulas to the cloud for easy access across devices. Includes a comprehensive scientific calculator.
5.0(2 ratings)
FreeAdsIn-App Purchases
Best apps like CalcFlex: Calculator
10+ similar apps compared and reviewed
5.0 avg rating
10 free apps
Updated August 2026
Whether you want more options like CalcFlex or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to CalcFlex
Formulize by Morten Gregersen
Strong Contender
🔧 Utilities
0.0(0 ratings)
FreeIn-App Purchases
KuCalc by Mineaki Sakatoku
Worth Considering
🔧 Utilities
0.0(0 ratings)
Free
More apps like CalcFlex
4
The Calculo
Calculator
Free
🔧 Utilities
(0)
5
EasyCal Simple Calculator
by Varghese Abraham
Free
A straightforward calculator app designed for speed and ease of use. It features large buttons and a clear display optimized for any screen size, along with a history of your calculations.
Large, easy-to-press buttonsClear, optimized displayCalculation history
🔧 Utilities
(1)
free6
OriginCalc
Calc & Exchange rates 1 screen
Free
🔧 Utilities
(0)
7
Formcalc
Formula Calculator
Free
🔧 Utilities
(0)
8
Custom Converter
Convert Anything to Anything
Free
🔧 Utilities
(0)
9
PrefixCalc
Metric‑prefix calculator
Free
🔧 Utilities
(0)
10
Calculator^: Scientific
One-Hand Mode & Math History
Free
This utility app offers a modern calculator with a visual history feature, eliminating the need to memorize previous calculations. It also includes a comprehensive unit converter and a tip calculator that bases tips on pre-tax amounts.
Visual history calculator (RESULT SHELF™)Unit converterTip calculator (pre-tax)
🔧 Utilities
(2)
free with in-app purchases