FlexCalc: Flexible Calculator
In-app purchases
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22K reviews
Rated for 3+
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1M+
Downloads
Rated for 3+
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About this app
FlexCalc is free forever, with no ads, no tracking, and no limits.
FlexCalc is a flexible calculator designed for editable calculations, linked values, history, and instant result updates.
Unlike a standard calculator, FlexCalc lets you tap any number or result, edit it directly, and see related results update automatically. You can reuse results in new calculation lines, drag linked values between lines, and adjust formulas without retyping everything.
Key features:
- Edit any number in your calculation and instantly update the result.
- Reuse results as linked values in new calculation lines.
- Drag linked values to replace, insert, or adjust calculations faster.
- Move the cursor inside numbers for precise edits.
- Review and restore previous work with calculation history.
- Share calculations as text or an image.
- Customize the app with different themes and fonts.
- Use scientific functions and custom constants when you need more than basic math.
FlexCalc is built to stay simple, fast, and distraction-free.
FlexCalc is a flexible calculator designed for editable calculations, linked values, history, and instant result updates.
Unlike a standard calculator, FlexCalc lets you tap any number or result, edit it directly, and see related results update automatically. You can reuse results in new calculation lines, drag linked values between lines, and adjust formulas without retyping everything.
Key features:
- Edit any number in your calculation and instantly update the result.
- Reuse results as linked values in new calculation lines.
- Drag linked values to replace, insert, or adjust calculations faster.
- Move the cursor inside numbers for precise edits.
- Review and restore previous work with calculation history.
- Share calculations as text or an image.
- Customize the app with different themes and fonts.
- Use scientific functions and custom constants when you need more than basic math.
FlexCalc is built to stay simple, fast, and distraction-free.
Edit, link, and reuse calculations with instant updates.
Updated on
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Ratings and reviews
21.1K reviews
Roberto
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July 9, 2026
It's been the best calculator but after the last update the screen does not scroll to where the cursor is typing, so you can't see what you type until you scroll down. It was doing it before the update so I trust it should be an easy fix. other than that I've been a satisfied paid user for a long time! EDIT: the update fixed it! thank you for your help
7 people found this review helpful
todayweather.co
July 9, 2026
Hi Roberto, thanks for your long support. Sorry about the scrolling issue after the latest update. Could you please update to the newest version? If it still happens, send us a screenshot plus your device model and app version to onegallery.app@gmail.com.
Erin Cardinal
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September 20, 2026
Teal is my favorite color. This is a really good app, but I wanna be able to choose the "light cyan" theme and still have it be dark mode. All of the color themes should be available in light and dark mode. I would rate 5 stars and even buy a few of the support options if that was added. I also cannot seem to figure out how to delete all of the calculations at once, because even if I open the history and clear that, the rest of them stay on my screen.
todayweather.co
September 20, 2026
Hi Erin, thanks for the great feedback! We’ll share your suggestions about adding “light cyan” in dark mode and making theme options work consistently in both modes with our development team.
Android
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July 4, 2026
FlexCal is probably the best calculator for Android⭐⭐⭐⭐⭐ And since it is now offered free of charge, I'd invite others to consider supporting the developer's other apps by purchasing them, including Today Weather & 1Gallery that are equally top notch. Recognizing & supporting great software is important. On a side note, updated app icon on the lastest version of FlexCal (with the green swirly arrow) was unnecessary & not nearly as clean and simple as the previous one was. Keep up the good work!
7 people found this review helpful
todayweather.co
July 4, 2026
Hi! Thanks so much for the kind words and for supporting FlexCalc. We really appreciate your feedback about the new icon and will pass it along to the team. Enjoy using the app!
What’s new
Version 3.0.1-3:
- FlexCalc is now available on iOS.
- Improved touch accuracy.
- Drag values to replace, insert, or reuse them.
- Move the cursor inside numbers for more precise edits.
- Added calculation history, with an option to turn it on or off in Settings.
- Added shortcuts for faster input and editing.
- FlexCalc is now available on iOS.
- Improved touch accuracy.
- Drag values to replace, insert, or reuse them.
- Move the cursor inside numbers for more precise edits.
- Added calculation history, with an option to turn it on or off in Settings.
- Added shortcuts for faster input and editing.
Rated for 3+
Learn moreApp support
phone
Phone number
+84933377713
About the developer
Trần Thanh Thọ
todayweather.co@gmail.com
22 Đường 3 Park Riverside, Phú Hữu
Thành phố Hồ Chí Minh
Vietnam
