Do you know how much you spend on gasoline each year?

Do you always wonder, "Which gas station is the cheapest?"

Gasonavi solves all those problems.

-- What you can do with Gasonavi ---

◆ Find out "how many yen cheaper" a gas station is than the national average

Gasonavi displays the price difference from the national average for each station.

For example, a station marked "National Average -5 yen" will still be 5 yen cheaper than the national average even if the gasoline price rises by 10 yen. You can see at a glance which stations are "always cheap," not just those offering temporary sale prices.

No more worrying about "it was cheap last week, but expensive today."

◆ Quickly check nearby gasoline prices on a map

Simply open the app, and gas stations near your current location will be displayed on a map with their prices. Easy-to-distinguish markers with brand logos and a banner sorting by cheapest nearby stations eliminate the hassle of searching around. Filtering by brand and price range, and sorting by cheapest first are also supported.

◆ Automatically suggests the cheapest gas station along your route

Enter your destination, and the app will suggest gas stations along your route in order of price, from cheapest to most expensive. You can stop at the cheapest station on your usual route without having to take a detour.

One-tap navigation integration with Google Maps and Yahoo! Car Navigation ensures you won't get lost even in unfamiliar areas.

◆ Price Forecast for Next Week's Gasoline Prices

Based on crude oil market and exchange rate trends, we provide weekly predictions of whether gasoline prices will rise or fall next week.

"Should I fill up this week, or wait until next week?"—You'll have the information to make that decision. A forecast chip is always displayed on the map screen, so you can check price movements every time you open the app.

◆ Automatically manage fuel efficiency and expenses by simply recording refueling

Quickly record the gas station, price, and amount of fuel refueled each time. The app automatically calculates fuel efficiency and monthly gasoline expenses, visualizing them in graphs.

You'll be able to answer "How much did I spend on gasoline last month?" instantly.

◆ Expense Export for Tax Filing

You can export your fueling records as a CSV file. Sole proprietors and freelancers can directly import the data needed for claiming gasoline expenses into their accounting software.

◆ Your Fueling Records Become Everyone's Price Information

You can post the latest gas station prices with a single tap from your recorded fueling information. You won't be asked to "look up prices and post them." Your personal records become useful price information for everyone.

◆ Area-Based Price Rankings

Gas station rankings are displayed by prefecture, based on user submissions, sorted from cheapest to most expensive. You can check how many yen cheaper the gas stations in your area are compared to the national average.

◆ Member Pricing Supported

By registering your membership settings for brands such as ENEOS, Apollo Station, and Cosmo Oil, member prices are automatically reflected on the map. You can compare them with general prices and choose truly cost-effective gas stations.

◆ Visit Collection

Gas stations you've refueled at are automatically collected. Enjoy a small sense of accomplishment with brand stamp cards and prefecture-based maps.

--- Main Features ---

• Map search of approximately 30,000 gas stations nationwide
• Display of price difference from the national average for each station
• Search for the cheapest price along your route & car navigation integration
• Gasoline price forecast (updated weekly)
• Fueling record & automatic fuel efficiency/expense management
• CSV export for tax filing
• Monthly expense/fuel efficiency trend graph
• Price ranking by area
• Supports member pricing by brand
• Visited gas station collection
• Supports regular/premium/diesel fuel

--- Recommended for: ---

• Those who want to know how much their monthly gasoline expenses are
• Those who are always looking for the cheapest gas stations for commuting or driving
• Those who are concerned about the timing of gasoline price increases and decreases
• Those who want to record fuel efficiency and manage their car's condition
• Self-employed individuals and freelancers who claim gasoline expenses as business expenses

--- About the Data ---

• Location data for approximately 30,000 gas stations nationwide (OpenStreetMap + each brand's official website + Ministry of Economy, Trade and Industry)
• Average prices by prefecture (Agency for Natural Resources and Energy) Petroleum Product Price Survey)
- Store-specific prices accumulated from user refueling records and price submissions
- Even if submitted data becomes outdated, the system automatically calculates the current estimated price based on the difference from the national average.

You can use the gas station search from the moment you download the app, even without submitted data.

-- Terms of Use ---

- Price information is based on user submissions and public data and may differ from actual in-store prices.
- Price forecasts are statistical predictions and do not guarantee prices.
- Location information is used for gas station searches.

Please feel free to contact us with any comments or bug reports via the "Contact Us" section in the app or by emailing us on X (@gasonavi).