RTRO-CLC2 is a free calculator app developed by Oto Insa for iPhone users. This app aims to satisfy those who long for the simplicity and nostalgia of old calculators. With RTRO-CLC2, no equation is boring again.

The app features a tape/history view that can be accessed by swiping from the right side. This allows users to easily review their previous calculations. Additionally, users can tap on the result to copy it, making it convenient for further use.

RTRO-CLC2 brings back the classic 7-segment digits, adding a touch of nostalgia to the user experience. The iteration feature, triggered by the "=" key, allows users to perform repetitive calculations with ease.

To enhance the user experience, RTRO-CLC2 includes satisfying click noises, reminiscent of old mechanical calculators. Users can also use the app with a keyboard, making it even more convenient for those who prefer physical input.

The app also offers a memory bank, allowing users to store and recall numbers for later use. And the best part? RTRO-CLC2 is completely ad-free, ensuring an uninterrupted calculation experience.

Supported math operations include addition, subtraction, multiplication, division, and square roots. Whether you need a simple calculator for everyday calculations or crave the nostalgia of old calculators, RTRO-CLC2 is a great choice for iPhone users.