TwoRuby

How this developer operates

• Carrier title Chalkbook: Teacher Gradebook holds 74% of the developer's installs
• Hit rate 0% of launches reach 100k installs (0 of 2 at least 30 days old)
• Release rhythm a new app every ~82 days on average
• Maintenance 2 of 2 apps updated in the last 90 days · last update today · updates every ~24 days

Same company, other accounts · Nguyễn Hữu Tráng

Developer names that share this developer's legal name, contact e-mail or website in the store.

All apps

App	Style	Rating	Installs	Released
Chalkbook: Teacher Gradebook	Education	—	100+	Aug 5, 2026
Plant30: Gut Health Tracker	Health & Fitness	—	50+	May 15, 2026