Calca

I've tried a couple of simpler calculators before: Numi and Soulver. This one is a lot more powerful, naming just a few things that make it great: - It's symbolic: instead of just calculating the result, it treats expressions as first-class entities — so you can solve equations, find function derivatives, etc - It's functional: it not only has functions, it also treats them as first-class entities — so you can pass a function as an argument to another function (though this one probably doesn't make much sense for anyone who is not a software engineer or a mathematician, but whatever) - It works with matrices, plots, has a ton of built in measurement units, etc - Oh, and it supports mobile platforms and synchronizes your sheets via iCloud That being said, there are some problems and enhancement options, that I hope the developer(s) would eventually give some more attention: - The "undo" after inserting "=>" doesn't erase the computed answer, so you have to remember not to use it in these cases and just remove the text manually instead. - There are missing currencies, like georgian lari. - There's no configuration at all. I wouldn't expect some advanced customization, but simple things like changing the color scheme or fonts would be nice. But most important of all, vertical tabs! - Would be nice if the scroll went down over the last line, so you don't have to look at the bottom of the screen if you are editing the last line. - (iPad) Inserting numbers is broken if you are using an external keyboard. Best of luck to the developer(s) and thanks for your work!

Отличное приложение. Очень выручает! Снизил оценку за проблемы с отображением кириллических символов (в версии для OS X с этим порядок).

Можно достаточно быстро строить графики, находить производные/интегралы, очень удобно делать цепочки вычислений. В общем приложение - класс)

This is the best app which works with variables! Very handy for complex caclulations and equations. ...but I want to have Mac OS version of it and sharing between devises via iCloud :)

Please add support of dropbox.

Subj

This app is unique and there is nothing else quite like it. I use it in place of Excel when multiple calculations are required along with extensive text. That said, it’s been several years since it’s been updated so I’m concerned the developer may have abandoned the project. Calca is among my core apps so I’d be open to a subscription offering to compensate the developer and ensure it remains sustainable.

I really dig the approach this app takes to text + free-form calculations. I use Markdown all the time, so that's a bonus, but the app really shines in the way it interprets text and functions in-place. It has far more power under the hood than I could ever use so I only have a few surface-level nitpicks: * Document management on iOS/iPadOs is clunky. * I still hit occasional crasher bugs. * I wish the iOS/iPadOS versions were updated more frequently. I don't think it needs to roll in all the latest platform features, but some bug fixes and polish would be nice.

When you're using the Magic Keyboard, you can't type in numbers anymore. Once you type a number, it switches into this weird overwrite mode, where every number you type overwrites the current number. For example, let's say you want to type 1234. You'll type 1, which will appear. Then 2 overwrites 1. And then 3 overwrites 2. And then 4 overwrites 3. So instead of 1234, you just get 4. Useless.

This is such a useful app, with text documents coming alive as computational documents. Like a spreadsheet in a way, but in a different medium. Truly wonderful