To access GreatDay HR, the minimum smartphone requirements for Android and iOS based are as follows:
| Specs | Android | iOS |
| OS Version | Android Lollipop (Android 5), recommended Android Lollipop or newer | Minimum iOS 13, Recommended iOS 14 |
| RAM | Minimum 4 GB | Minimum 2GB |
| Storage | 200 MB available space | 100 MB available space |