If you are looking for the legitimate app, it is available for free with optional in-app purchases on major platforms:
Searching for "Speedtest by Ookla v4.7.19 Premium Mod Apk" typically points to a modified version of the official Speedtest app . These "mod" versions are usually unofficial and aim to unlock —such as ad removal or unlimited VPN data—without a paid subscription. Speedtest by Ookla v4.7.19 Premium Mod Apk
If you are trying to solve a specific issue with the app, could you tell me: What or fix If you are looking for the legitimate app,
