Fuel Manager Pro will help control the cost of fuel and know when they have exceeded the budget. THE FIRST APPLICATION IN THE GOOGLE PLAY WITH FULL SUPPORT FOR DUAL-FUEL CONSUMPTION CALCULATION OF FUEL (GAS + PETROL) Features. Calculation of of fuel consumption - for one or two tanks (combined and separate statistics). Detailed statistics and comparative graphs. Forecast of remaining fuel. Road Calculator rundown, path cost, and the necessary fuel. Export and import data (TSV). 16 themes. Flexible settings (unit and interface). Widgets for quick addition of records. Sync with the cloud, and between devices (using Dropbox API - Pro). Several vehicles (Pro). No ads. Absolutely. What better than other. calculation consumption of bi-fuel systems. Universal calculation of fuel consumption (full tank, milestones, calculation ?? residues). Prediction of remaining fuelAnswers to your questions, and detailed help can be found on the project website - http://kb2soft.ru/enATTENTION. To calculate the statistics needed at least two "final" record. These entries are - filling to complete, checkpoint, tank rest. The more entries, the more periods of calculation and the statistics more accurate. The most accurate results you get with regular refuels to complete. Use the "checkpoint" when you understand what it is and why. The program is continually evolving. If you have doubts about the loyalty of calculation or other questions - write to kb2. firstname.lastname@example.org - I will try to answer as quickly as possible.