I encourage you to try free version first. If you find it relevant then download this version to support development.

https://play.google.com/store/apps/details?id=com.shivang.managefirebasedatabase.free

A true firebase database manager made with prospective of both new and advanced developers. You can simply add your firebase app details or just visit featured firebase apps for templates

Available features:
1. Add Node
i. with string key ii. with UID iii. with auth token
2. Update Node
i. Key update ii. Value update iii. Type update
3. Add Value
i. String ii. Boolean iii. Long iv. Double
a) Normal a) Date
b) User name b) Time
c) Date with time
d) Current time
4. Quick Edit (Very useful)
i. Quick edit value ii. Quick edit key
5. Clip Data (Work like simple copy paste)
i. Copy any node snapshot
ii. Paste any node snapshot
6. Authentication (Exclusive for all firebase app)
i. with email provider
ii. with google
iii. with phone (currently unstable due inconsistency in Google Api)
7. Add firebase app
i. Manual input (database url, web api key, and app id)
ii. Auto read from google-service.json
8. Quick templates - Help to create proper database schema and place to experiment with new thoughts
9. Two window UI to facilitate copy paste feature
10. Choose app scope as private or public- (Soon you can share your app with friends)