Legal Notice
Information pursuant to § 5 DDG
Daniel Wulf
Virchowstraße 19
72800 Eningen unter Achalm
Germany
Contact
Email: info@vumble.de
VAT
Pursuant to § 19 of the German VAT Act (UStG), no VAT is charged (small business regulation). Accordingly, no VAT identification number under § 27a UStG exists.
Tax number: 78489/81980 (Reutlingen tax office)
Responsible for content pursuant to § 18(2) MStV
Daniel Wulf, address as above
Consumer dispute resolution
We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.
The German version of this legal notice is authoritative.
About Vumble
Vumble turns your everyday trips into two numbers: how much CO₂ they produce compared to going by car, and how many calories you burn along the way.
Version 1.0.0
Your data stays with you
Vumble has no server. Everything is calculated and stored on your device. On Android, the app does not even hold the permission to access the internet.
→ Privacy Policy · Legal Notice
Where the numbers come from
The CO₂ figures come from the German Environment Agency (Umweltbundesamt) (comparison of average emissions of individual modes of passenger transport, reference year 2024, calculated using TREMOD 6.71B). Given in grams of CO₂ equivalent per passenger kilometre, including emissions from energy supply.
Calorie expenditure is estimated using MET values and depends on speed, duration and your body weight. Such estimates are inherently imprecise — treat the number as a guide, not a measurement.
No official figure exists for e-scooters; the value used there is our own estimate.
Software used
This app uses the Nunito typeface, licensed under the SIL Open Font License 1.1.