Best Willed Calculator Alternatives - 2025

Front’s powerful customer service platform makes five-star service attainable for 9,000 businesses like yours. We bring together your core support channels in one intuitive, AI-powered workspace where your team can build collaborative workflows across the entire customer lifecycle.

I'm a HUGE fan of Front. We use it at Weekend Fund for its collaborative features, most notably shared email drafts and inbox chat. We previously used Spark, which has the same feature set, but found it slow and buggy.

Omni Calculator solves 900 problems anywhere from finance and business to health. It’s so fast and easy you won’t want to do the math again!

Numbr is a currency calculator, a notepad that understands your calculation. You can use notes with numbers alongside each other. And all your numbers are instantly calculated as you type. It's same as soulver/numi/etc, but for the Web.

If you ever used Numi for macOS, you definitely want to try this one. This needs to be ported as an iOS/macOS app. I love it, and use it on daily basis.

4. kalk

5 alternatives

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kalk is a calculator that has syntax highlighting, automatically turns names into symbols (eg. sqrt to √), supports math-like syntax (eg. f(x) = x(2sinx + 3) estimation of derivatives and integrals, complex numbers, and runs in the browser using WebAssembly.

Willed Calculator alternatives

A basic calculator based on voice recognition input