If you're looking for a calculator app that's more than just basic arithmetic, I think you'll find FlexCalc by TodayWeather.co to be an interesting choice. What caught my attention first was its promise of flexibility, and it certainly lives up to that. Unlike traditional calculators that just handle simple equations, this app offers a mix of functionalities, including scientific calculations, unit conversions, and even currency exchange rates. The clean and minimalistic design made it super easy to use, and I appreciated that there wasn't any unnecessary clutter on the screen. It felt fresh and efficient—just what I need when I'm looking for quick results on the go.

One of the standout features of FlexCalc is its user interface. The app offers a smooth, intuitive experience that doesn't overwhelm you with complex menus or icons. The display area is spacious and legible, and you can easily adjust the layout to fit your needs. I particularly liked how I could switch between different modes—basic, scientific, and unit conversion—with just a tap. This flexibility really enhances the app's functionality. You can get from simple addition to solving trigonometric functions without breaking a sweat. There's even an advanced graphing feature if you need to plot functions, which could be helpful for students or professionals in fields like engineering or physics.

However, one of the hidden gems in FlexCalc is its ability to save past calculations and revisit them at any time. You can swipe through your previous work without having to re-enter everything, which is such a time-saver. As someone who frequently needs to check my calculations, I found this feature invaluable. It's perfect for when you're working on multiple problems or need to review your work. I noticed that this functionality wasn't as obvious at first glance, but once I figured it out, it became an essential part of my daily routine. The app also allows you to copy results directly to your clipboard, which can be incredibly useful when you need to paste them elsewhere, like into a note or email.

Another major benefit of FlexCalc is its support for various unit conversions. Whether you're dealing with length, weight, temperature, or speed, this app has you covered. It saves a lot of time when you need to convert between units on the fly. Some of the user reviews on Google Play also praised this aspect of the app, with one user mentioning how they use it to convert cooking measurements when following recipes, while another user highlighted how it helps in the field of construction. It's clear that FlexCalc appeals to a wide range of people due to its versatility. As someone who enjoys traveling, I found the currency converter particularly handy. It automatically updates exchange rates, so you don't need to worry about outdated numbers.

On the downside, I did encounter a few minor glitches. There were times when the app froze for a few seconds when switching between modes, though it didn't affect my overall experience too much. It's worth noting that some users mentioned this in their reviews as well, but the app's team has been responsive in addressing issues and updating the app regularly. One thing I'd love to see in future updates is a dark mode—something I've grown accustomed to in many of my other apps. It would make using FlexCalc in low-light environments even more comfortable.

In terms of pricing, FlexCalc is free to download and use, but it offers in-app purchases. While the free version gives you access to most of the essential features, you can unlock additional functionality through a premium subscription. This includes features like more advanced scientific tools and priority support, which could be appealing if you're a heavy user. For casual users like me, the free version is more than enough, but I do see the value in the premium version if you need those extra features.

Overall, FlexCalc is a reliable, multi-functional calculator that's perfect for anyone who needs more than just a basic math tool. Whether you're a student, a professional, or just someone who frequently needs to convert units or perform scientific calculations, this app has a lot to offer. Its sleek design, hidden features like saved calculations, and unit conversion tools make it a solid choice. The occasional glitch is a minor issue, and the app is regularly updated to improve stability. If you're tired of the standard calculator apps, FlexCalc could very well be the upgrade you've been looking for.