# e燃費 vs 共豊 D

The clearest difference is update cadence: e燃費 at every 3 months against 共豊 D's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

e燃費 ships an update every 3 months, 共豊 D every 6 months. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | e燃費 | 共豊 D |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | — |
| Size | 25 MB | 38 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IID,Inc.](https://appshunter.io/developer/869181882) | [KYOHO CORPORATION](https://appshunter.io/developer/1556563047) |

## What reviewers say

### e燃費

[App page](https://appshunter.io/ios/app/e/id440691273)

Track your car's fuel efficiency with ease. Log your gas purchases by taking photos of receipts and compare your mileage to similar vehicles. The app also helps you manage maintenance schedules and find nearby gas stations with real-time price updates.

**Highlights:** Real-time fuel efficiency tracking, Receipt scanning for logging fuel purchases, Comparison with average vehicle fuel economy, Gas station map with real-time prices, Vehicle maintenance schedule management, Gas price posting via photo

**Features:** Vision Pro support

**In-app purchases:** none


### 共豊 D

[App page](https://appshunter.io/ios/app/d-response/id1556563045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is e燃費 free?

e燃費 is free to download, with no in-app purchases.

### Is 共豊 D free?

共豊 D is free to download, with no in-app purchases.

### Do e燃費 or 共豊 D have ads?

Neither e燃費 nor 共豊 D shows ads.

### Which is updated more often, e燃費 or 共豊 D?

e燃費 ships an update every 3 months, and 共豊 D every 6 months. Most recently, e燃費 was updated on September 29, 2026 and 共豊 D on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*