About this app
This is back number official app. In this app, you can enjoy various contents such as back number latest information, official fan club "one room" member exclusive movie and member blog.
Latest release
What’s New
Version 4.5.1
Jun 27, 2026
Minor bug fixes and improvements.
Audience growth
Ratings growth
7-day gain
+0
Ratings / day
0.0
30-day gain
+0
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
Current
Free
Historical low
Free
Paid → free
0×
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 7, 2026 · 3:58 PM Free
Screenshots
