Here's a few apps relevant to combatting wildlife crime.

1. ENV- Report Wildlife Crime - This app specifically focuses on wildlife crime in Vietnam. You can report incidents, and ENV will then take necessary steps to contact authorities and take action. 

2. Wildlife Witness - Users can report wildlife crime across Southeast Asia. This was developed in collaboration with TRAFFIC and the Taronga Conservation Society Australia. 

3. WildScan - App created by the Freeland foundation to report wildlife crime, geared towards use by enforcement agencies. The app is available in English, Thai and Vietnamese. All submissions are distributed to ASEAN's Wildlife Enforcement Network. 

Anyone know of any more to add?