Pakpi Calendar is a calendar application that is entirely written in Shan language. There is 2 calendar type involved in the app
1. Normal calendar (ပၵ်းပီႊၾၢႆႇတႆး)
As globally, a week has 7 days.
2. Pakpi calendar (ပၵ်းပီႊဝၼ်းတႆး ၆၀)
Followed by Shan tradition, a week has 30 days based on the moon phase.

The app also offers for people who want to save notes (တီႈမၢႆတွင်း). This is implemented by using a local database. Saving note also has 2 options
1. Save for this year only
2. Save for every year since the selected date (Useful for saving birthday and anniversary day)

You can also watch the holidays (ဝၼ်းလိုဝ်ႈၸႂ်) involved in this apps. You can even go through year to year within it.