BullDozer — Support
Last updated: 28 July 2026
BullDozer is a free app and website that turns public statistics into charts, country profiles, maps and a data quiz. This page is where you get help.
Contact
Email [email protected] — questions, bug reports, or a number that looks wrong. Please mention your device and the app version, it makes problems much easier to trace. We usually reply within a few days.
Do I need an account?
No. The app has no sign-up, no login and no ads.
Does it work offline?
Yes. Datasets are cached on your device after the first load, so charts and country profiles keep working without a connection. Fresh data is fetched whenever you are online.
Where does the data come from?
From public statistical sources, republished as open data files at azenha.ai/bulldozer. Every dataset page names its source and the period it covers.
A figure looks wrong
Tell us which indicator, country and year, and we will check it against the source. Public statistics are revised over time, so a number may legitimately differ from one you saw elsewhere.
A country is missing from a chart
Coverage varies by indicator — not every source reports every country for every year. Gaps in the source stay gaps in the app rather than being filled with estimates.
Privacy
The app collects no personal data. See the privacy policy.