1. Fan management
2. resegment:
2.1. rookie
2.2. free or premium
2.2.1. trial user
2.2.2. first pay
2.2.3. n pay user
2.3. filtered by mediasource
2.4. user's rank
2.4.1. rookie users
2.4.2. intermediate
2.4.3. advanced
2.4.4. limbo: dont have songbook unlocked
2.5. intermediate
3. usage/free users
3.1. retention
3.1.1. prev metrics
3.2. engagement
3.2.1. prev metrics
3.3. design features: rookie to before advanced
3.3.1. FTUE
3.3.1.1. can users go through on-board easily?
3.3.1.2. can user go thru Piano Time basics and play the first song?
3.3.1.2.1. have access to piano at first time open?
3.3.1.2.2. can user pass the current design?
3.3.1.3. access to piano later, how long will it take?
3.3.1.4. will users use piano at the first time starting piano basics?
3.3.1.4.1. if users don't have piano. will they be able to select Virtual keyboard to play if they can't move on from Piano time Basics?
3.3.2. play progress
3.3.2.1. song play
3.3.2.1.1. 1st rewarded song
3.3.2.1.2. user's result for parts of other songs
3.3.2.1.3. do user repeat the same song because want to conquer it?
3.3.2.1.4. users repeat playing a song cuz' they enjoy the same song?
3.3.2.1.5. Learn mode usage
3.3.2.2. level/reward
3.3.2.2.1. how users' leveling up?
3.3.2.2.2. do they use gold to unlock new songs and play those songs they unlock?
3.3.2.2.3. play songs from new difficulty when they unlock successfully?
3.3.3. gold screen rewards
3.3.3.1. will users earn these rewards?
3.3.3.1.1. if not, do they reach the condition but didn't click the button to receive the reward?
4. monetization/motivation to pay
4.1. will they pay for it?
4.1.1. trial/install
4.1.2. pay/install
4.1.3. trial/pay
4.2. why they pay?
4.2.1. unlocking a song?
4.2.2. unlocking a journey?
4.3. when do they pay?
4.3.1. level / rank / day diff
4.4. which pack do they purchase?
5. product 2.1
5.1. paid user
5.1.1. song play
5.1.1.1. how many songs do they finish wholely?
5.1.2. retention of paid user
5.2. challenge feature
5.2.1. will users replay challenge to get high score?
5.3. cable connect of advanced users
5.3.1. will users connect the cables when reach this level?