Rainbow Tool Assistant app for iPhone and iPad

Rainbow Tool Assistant is a convenient multi-purpose tool app that includes calculator, stopwatch timing, and memo functions. Users can use it to meet various needs in their daily life and work.

What sets us apart?
This application is very simple and easy to operate
This application does not need to collect any personal information
This app is free for users to use

We are committed to meeting the needs of users and continuously improving our service level.

Contact us
If you have any suggestions or questions, please contact us
Email: [email protected]
Working hours: 9:00 am to 5:00 pm (Monday to Friday)