Easy Attendance Clock -- CheckIn/Out without login
This service does not require registration, but use push notification number for identification. Suitable for small company/class to record attendance check in/out. Manager and User all can keep one record for verification each other, this record can export as CSV file.

Manager Mode: Can generate QRCode that can be scanned by Users. Then can produce the scanned list record.

User Mode: Can enter custom categories agreed with the Manager, can form multiple columns of data with commas. For example:
'ChkIn,No001,Name,Other Custom Example Fields'

Warning: Records will be kept 60 days in phone. BUT, no guarantee not LOST. Please export data often, daily will be better. Especially when the mobile phone is changed, the App is reinstalled, and the data is manually deleted, the data will be lost, and the identify number will also be changed.