AppGoblin
RANKINGS
Top Google Play App Ranks
Apple App Store Ranks
Top Growth Apps
New Apps
INTELLIGENCE
Company Rankings
All Companies
Ad Networks
Analytics: Attribution
Analytics
Development Tools
Mediation Platforms
Business Tools
Apps
Ad Creatives
Top Mobile Advertisers
App Explorer
SDKs
RESOURCES
Blog
Reports
Data Exports
PRICING
ABOUT
Jack - English Grammar & Tests
Developer: ValentineOS
Category: Education
Add App to Comparison
Follow App
Overview
Trends
SDKs
Keywords
Store Rankings
Data & API Calls
Ad Creatives
Ad Placements
Monetized Ad Creatives
App-Ads.txt
Direct App-Ads.Txt
No direct App-Ads.txt entries found.
Reseller App-Ads.Txt Entries
No reseller App-Ads.txt entries found.
