Doesn't look that reliable. If your issue is the money, go for netspark. They have a trial period.
You can also try purifeye. I've gotten some positive feedback from a fellow TAG volunteer that tried it on his own device.
Although Tag doesn't officially recommend it yet, since we don't know enough and don't have access to the backend yet.
Android Installation
A. Important:
• The device may be wiped during setup.
This is usually avoided by removing ALL accounts from the phone.
see below for further instructions.
• Removing the software will involve wiping the device.
B. Remove ALL accounts from the device (Google, Facebook, WhatsApp etc):
1. Open your devices settings.
2. Type "Accounts" in the search bar.
3. Tap to open the Accounts Settings.
4. Tap on each account & select the "Remove" option
C. Turn on USB Debugging:
1. Open your devices Settings
2. Tap About device and then tap Software Information.
3. Tap the build number multiple time until it says "You are a developer".
4. Open Settings again & then tap Developer Options.
5. Turn ON USB Debugging.
Every filter requires to wipe the phone?