NENP (This is the Japanese word means “fuel economy”) is a fueling management / fuel economy calculation application. Every time you refuel, it records the fueling information for each vehicle (car or motorcycle) and automatically calculates the fuel economy.

There are many other similar apps, but NENP has the following features.

- Simple and sophisticated user interface.
- Calendar display of fuel economy or refueling amount.
- You can register data by specifying the date from the calendar. This is useful for registering past data.
- Trip input or odometer input can be selected for each vehicle.
- You can choose to enter the total price or the unit price.
- You can also choose not to enter or show the price of refueling (for those who want to manage only fuel economy).
- Automatically syncs and saves data to iCloud, so there is no need for backups. Once the data is saved to your device, it is automatically synced to iCloud, so you can use this app even in situations where data communication is not available.
- The same data can be viewed/edited from multiple devices logged in with the same Apple ID (e.g. iPhone and iPad together).

In addition, NENP has the following features.

- Manage multiple vehicles (unlimited number of vehicles)
- You can specify full / non-full tank.
- When you forget to keep a record of your last refueling, you can exclude it from the fuel economy calculation.
- You can display various statistical information derived from refueling history.
- The fueling records of each vehicle can be exported as TSV files.