Gamified Class XP / Currency System

Problem Description

I want to gamify my class a bit. An application (or locally ran server) where I can add all their names and pictures and let them earn EXP to reach personal and group goals that I can set myself would be amazing. I know similar apps exist, but they're either expensive or riddled with adds. If students can edit their own avatars, buy items for their character with EXP, level up, reach rewards, and so on, I think I could motivate them so much more.

Proposed Solution

An app that allows me to set this up... Add pupil names and pictures. Set up quests (tasks) and assign a number of exp to them Add a shop that has cosmetic items for their avatar (admin has ability to add/remove items, assign levels and/or exp to them) Add and display personal goals + the 'perks' they unlock at certain levels Add and display group/class goals + perks they unlock at certain levels Anything else that's fun and educational that could be part of this...

I found/stole/borrowed part of this guys idea here: https://blog.haschek.at/xp-based-grading-system/

But I'd like it to be fun and visual for my students as well. I have students raging from age 15 to 19.