If you are using Kaizen Surveys on iOS, the standard Apple EULA agreement applies and is found here.
If you are using Kaizen Surveys on Android (Amazon, Google Play) or through Google Chrome, the EULA here applies.
Kaizen Surveys is designed to work on a variety of devices which have varying amounts of memory, cpu, etc.. As a result, there is no specific limits to the size of a survey (how many questions), amount of data, or number of users. That said, it is possible you will encounter issues if you are creating large surveys, dealing with lots of data, lots of users, or working on older more limited devices. Please do let us know if you find you are encountering such issues!
If you have questions, concerns, or comments about Kaizen Surveys, please contact us at firstname.lastname@example.org. You may also email us directly from within the application settings page in the app.