# Mozilla Stumbler

> discontinued Android app for collecting GPS data for the Mozilla Location Service

**Wikidata**: [Q112797884](https://www.wikidata.org/wiki/Q112797884)  
**Source**: https://4ort.xyz/entity/mozilla-stumbler

## Summary
Mozilla Stumbler is a discontinued Android mobile app that collected GPS and radio-signal data to support the Mozilla Location Service. It was a crowdsourcing tool and open-source project with source code hosted on GitHub.

## Key Facts
- Mozilla Stumbler is a mobile app whose primary use was crowdsourcing geolocation data for the Mozilla Location Service.
- The app ran on Android (the Google mobile operating system).
- The project is described as discontinued and is copyrighted.
- Developer is recorded as Q9661 (as given in the source material).
- The project source code repository is https://github.com/mozilla/MozStumbler.
- The public website associated with the service is https://location.services.mozilla.com/.
- The app is also known by the alias "MozStumbler".
- Licenses: Mozilla Public License, version 2.0, and Apache Software License 2.0.
- Documented releases include versions 0.8.0 (2013-12-11) through 0.12.0 (2014-02-11); the latest listed release is 0.12.0 dated 2014-02-11.

## FAQs
### Q: What was Mozilla Stumbler?
A: Mozilla Stumbler was an Android mobile app used to collect GPS and radio-signal data for the Mozilla Location Service via crowdsourcing.

### Q: Is Mozilla Stumbler still active?
A: No. The project is described as discontinued in the provided source material.

### Q: Where is the source code for Mozilla Stumbler?
A: The source code repository is hosted at https://github.com/mozilla/MozStumbler.

### Q: Under what licenses was Mozilla Stumbler released?
A: The project used the Mozilla Public License, version 2.0, and the Apache Software License 2.0.

### Q: What platform did Mozilla Stumbler run on?
A: The app ran on Android, the mobile operating system created by Google.

## Why It Matters
Mozilla Stumbler mattered because it provided a mechanism for crowdsourced collection of GPS and radio-signal observations to feed the Mozilla Location Service. By allowing volunteers to collect and upload geolocation data from Android devices, the app contributed structured inputs that the Location Service could use to build and improve a geolocation database. Its open-source licensing (MPL 2.0 and Apache 2.0) and public repository on GitHub made the project and its code accessible for inspection, reuse, or adaptation. Although the app is discontinued, the existence of its codebase and documented releases preserves a record of the tool and enables continued study or reuse of its components by developers and researchers interested in crowdsourced geolocation systems.

## Notable For
- Purpose-built crowdsourcing app specifically tied to the Mozilla Location Service.
- Android-only mobile app with multiple documented releases between December 2013 and February 2014.
- Open-source availability with source code hosted at https://github.com/mozilla/MozStumbler.
- Dual licensing under Mozilla Public License 2.0 and Apache License 2.0.
- Recorded as discontinued while retaining archived releases and repository.

## Body

### Purpose & Function
- Mozilla Stumbler collected GPS and radio-signal data.
- Data collection was intended to support the Mozilla Location Service.
- The project was explicitly described as using crowdsourcing.

### Platform & Classification
- Instance of: mobile app.
- Runs on / requires: Android (the Google mobile operating system).
- Alias: MozStumbler.

### Development & Releases
- The project's repository is https://github.com/mozilla/MozStumbler.
- Documented releases and dates (as provided):
  - 0.8.0 — 2013-12-11
  - 0.8.1 — 2013-12-22
  - 0.8.2 — 2014-01-03
  - 0.8.3 — 2014-01-07
  - 0.9.0 — 2014-01-20
  - 0.10.0 — 2014-01-23
  - 0.10.1 — 2014-01-23
  - 0.10.2 — 2014-01-25
  - 0.11.0 — 2014-01-30
  - 0.12.0 — 2014-02-11
- The latest listed release in the provided material is version 0.12.0 (2014-02-11).

### Licensing & Source Code
- Licenses: Mozilla Public License, version 2.0; Apache Software License 2.0.
- Source code repository URL: https://github.com/mozilla/MozStumbler.
- The project is recorded as copyrighted.

### Ownership & Associations
- Developer value listed as Q9661 in the provided data.
- Associated website for the service: https://location.services.mozilla.com/.

### Status
- The project is described as discontinued in the provided source material.

## References

1. [Release 0.8.0. 2013](https://github.com/mozilla/MozStumbler/releases/tag/v0.8.0)
2. [Release 0.8.1. 2013](https://github.com/mozilla/MozStumbler/releases/tag/v0.8.1)
3. [Release 0.8.2. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.8.2)
4. [Release 0.8.3. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.8.3)
5. [Release 0.9.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.9.0)
6. [Release 0.10.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.10.0)
7. [Release 0.10.1. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.10.1)
8. [Release 0.10.2. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.10.2)
9. [Release 0.11.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.11.0)
10. [Release 0.12.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.12.0)
11. [Release 0.12.1. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.12.1)
12. [Release 0.13.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.13.0)
13. [Release 0.14.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.14.0)
14. [Release 0.15.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.15.0)
15. [Release 0.16.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.16.0)
16. [Release 0.17.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.17.0)
17. [Release 0.18.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.18.0)
18. [Release 0.19.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.19.0)
19. [Release 0.20.3. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.20.3)
20. [Release 0.20.4. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.20.4)
21. [Release 0.20.5. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.20.5)
22. [Release 0.20.9. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.20.9)
23. [Release 0.30.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.30.0)
24. [Release 0.41.0.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.41.0.0)
25. [Release 0.99.0.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.99.0.0)
26. [Release 0.102.0.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v0.102.0.0)
27. [Release 1.3.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.3.0)
28. [Release 1.4.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.4.0)
29. [Release 1.5.0. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.0)
30. [Release 1.5.1. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.1)
31. [Release 1.5.2. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.2)
32. [Release 1.5.3. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.3)
33. [Release 1.5.4. 2014](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.4)
34. [Release 1.5.5. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.5.5)
35. [Release 1.6.0. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.6.0)
36. [Release 1.6.1. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.6.1)
37. [Release 1.7.0. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.0)
38. [Release 1.7.1. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.1)
39. [Release 1.7.2. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.2)
40. [Release 1.7.3. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.3)
41. [Release 1.7.4. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.4)
42. [Release 1.7.5. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.5)
43. [Release 1.7.6. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.6)
44. [Release 1.7.7. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.7)
45. [Release 1.7.9. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.9)
46. [Release 1.7.10. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.10)
47. [Release 1.7.11. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.11)
48. [Release 1.7.12. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.12)
49. [Release 1.7.14. 2015](https://github.com/mozilla/MozStumbler/releases/tag/v1.7.14)
50. [Release 1.8.5. 2016](https://github.com/mozilla/MozStumbler/releases/tag/v1.8.5)