CalcKit: All-In-One Calculator

Jason Jacoby

4 years ago

Best calculator app in my opinion. I just updated, and was shocked when I saw the new menu and colors, but it took about 10 seconds to familiarize myself with it, and customize it back to my comfort zone. Had to get back on Google Play to stress that it's worth all five stars!

A Google user

5 years ago

Could not get it to do Unit Converter, I tried several times, not with my finger, but with a pen, which is more accura It kept going to Electronics. It would be useful to have a ToolTip so you don't have to figure out when exploring, what an option is for, e.g. couldn't get out of Electronics, & clicked on what turned out to be a shortcut it created for Electronics. It doesn't seem to be user friendly. I don't understand why it has s 4.8 rating, when I can't get it to do what I need.

Brendan Strain

4 years ago

Pretty awesome .. really dig the wide breadth of pre built equations and converters. I find myself using this calc a TON for all sorts of conversions and theoretically inserting variables to see results. Really great. One suggestion - adding machinist calculators would be icing on the cake! (RPM from SFM and diameter, feed per tooth, etc ), lots of those calcs out there on the store, but would be awesome to have a one stop app! Great job.

A Google user

6 years ago

Very versatile calculator and converter! Nice feature to add a favourite button to the home screen. I'd like to have a Dez / Bin / Hex / Oct conversion option directly in the main calculator. This feature is hidden in the Numbers conversion and it would be helpful to have available all the time.

Rachel Grenier

2 years ago

!!Best Part!! -->> The Only app I know to love users enough to still offer Premium feat to be "purch" w/Reward Videos! I've used it for Acctg, Calculus, Stats, Econ, Chem, strategize game pts to lvl up sometimes req a little bit of fiddling with but 100s+ of Custom Tools over a dozen assorted Android devices = # of very different OS's ≈ a decade ± a couple yrs The # of times I've not been able to figure out how to make a Custom Calc Tool work close to what I want to shortcut < fingers on 2 hands

Robert L Davis II

2 months ago

A spot on application for sure. But where did you hide millimeter to inch conversion?* 12 Apr 2025: me brain got injured so I use this very frequently. It works so well for me I purchased Premium. Yeah, I like it. Bunches!*

Hélder Silva

4 years ago

Perhaps the best calculator I have ever tested, but to me needs some basic features: - Option to open always as Calculator or not (keep the last used); - Swipe to access faster to Favorites or add direct buttons (press: ToolBox + Favorites + Something it is annoying) - Allow add "Custom Tools" to Favorites. || Edit: with the new interface to me is by far away the best calculator all-in-one, great job

A Google user

5 years ago

I use this app a lot, and i'm very happy with it. It does everything advertised, and has accurate results. My only criticism is the menu layout, some conversions are a little difficult to find, but that's no big issue, and not something i would remove stars for. Another thing i like is that the conversions are in a list, and when i add a numberbto the item i want it converted from, and it shows the results for all items listed. I highly recommend this app. If i could, i would give it 10 stars.

Grace Woo

3 years ago

The interface was clean and intuitive. However, it's very unsophisticated. For example, it has a function to change fractions to its lowest improper form, but you can't use it as a fraction calculator or even allow input of a decimal number to get its equivalent as a fraction. Another example of how deficient this app is, is its interest calculator which doesn't allow input of number of periods, so that it's only able to calculate annual interest and not monthly or daily.

kokliang lee

1 month ago

I love the custom tool feature very much and have used it to built several routine calculations. The currency converter is also very useful and it seems to be able to keep up with recent exchange rates. 👍

A Google user

6 years ago

This calculator/converter has everything you could possibly need from a calculator and can convert about anything you can think of, including electricity. I don't know much about electricity, but if you need to do something dealing with electricity, it's definitely worth a try. You can choose calculators/converters as favorites too so you can find your most frequently used calculators/converters easily, which is a great feature 👍🏻

Wayne Hynd

2 years ago

Whoa! There are a lot of great tools here... Check out the FAQs, because the deep capabilities are somewhat hidden behind the clean simplicity. All kinds of calculators: standard stuff (volume, speed, distance, cooking, etc, ) but, also more esoteric stuff: board-feet, analytical geometry, numeric base, Roman numerals!; if it can be calculated it's probably here; and if not you can roll your own! The dev responded to my feature suggestion almost immediately, and implemented within a few hours!

D. Kwon

4 years ago

I'm a person who has to download and try all recent apps and narrow down to a favorite and this calc app is best I've found so far. This is namely for people who like customization and a lot of available features. It is the most convenient and quick-to-access unit converter and calculator. Enough options to satisfy most anyone. Every feature has an available shortcut which makes it integrate or enables utilization by many other apps such as Tasker. Great job and thanks for the customization.

A Google user

6 years ago

I Really don't like that it does NOT rotate on my LG Android phone to landscape. Also, why couldn't you include a proper history that's truly a functioning long term history. One that can be managed, that way delete everything IS NOT the only option. It's far more efficient to retrieve equations/formula's and results from history then trying to recollect, rebuild and re-calculate from scratch. AND, When assessing what-if scenario's, retrieval of historical work & data saves time and money!

Mark Bateman

1 year ago

Saved me many hours. I used it to make custom and repeated long calculations. It uses a modular drag and drop approach. Variables are stacked top down like a list. Read on for Wish list. In my setup, I have over 100 things. Wish I didn't have to drag everything from bottom up. ( numbered lines :) Wish there was a text variable. . Wish I could save and reload work. Wish the shared text output retained the formating that looked pretty in the program. Grouped Modules that can be called?

Jacob S.

3 years ago

I've been relying on this app for many years now and it has never let me down. It always has what I need, when I need it, and finding it is speedy. The UI flows very nicely. The ability to create custom calculations and converters really sets this app apart. Specially useful for all the different branches of industries, research, and technical trades one may be working in. I rarely leave reviews but this app deserves it. Keep up the great work who ever y'all are.

John Foreman

4 years ago

This tool does all I need and love that the functionality it did not have I was able to add through a custom function. Really good tool. I'm wholeheartedly giving 5 stars without reservations. But nothing is ever perfect. It does take a lot of clicks to move around in the functionality and some minor inconsistencies in behavior - but all very minor things. I replaced the RPN calculator I had been using for years and was happy with as this one is simply better. Thank you! (purchased upgrade to remove adds - happy to send the $)