# Road Trip MPG vs Sonar

The clearest difference is price: Sonar at Free against Road Trip MPG's $6.99. Sonar also leads on update cadence (weekly vs every 2 months). Road Trip MPG's advantage is in-app purchases (none vs 2) and chart position (#9 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Sonar is free to download; Road Trip MPG costs $6.99 up front. Sonar sells 2 in-app purchases, starting at $11.99 per year. Road Trip MPG asks for nothing beyond the download.

Road Trip MPG ships an update every 2 months, Sonar weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Road Trip MPG | Sonar |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.9 (629 ratings)](https://appshunter.io/ios/app/road-trip-mpg/id298398207/reviews)** | — |
| Number of ratings | **629** | — |
| Positive reviews | 93.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Best chart rank | **#9** | — |
| Size | 25 MB | 3 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Darren Stone](https://appshunter.io/developer/298398210) | [Romisoft Ltd](https://appshunter.io/developer/6806039383) |

## What reviewers say

### Road Trip MPG

[App page](https://appshunter.io/ios/app/road-trip-mpg/id298398207)

**Currently charting:** #9 Top Paid · Finance (US App Store)

Easily track your car's fuel economy, maintenance history, and expenses. Monitor trip costs, receive service reminders, and gain insights into your vehicle's spending. All your data remains private with no ads or subscriptions.

**Highlights:** Fuel economy and cost tracking, Maintenance history and reminders, Trip cost tracking and reporting, Comprehensive statistics and graphs, Unlimited vehicles, Automatic backup and sync

**In-app purchases:** none

**What reviewers like**

- 🚀 Useful app for logging mileage and expenses
- 👍 Easy to use and intuitive interface
- 💡 Comprehensive features for tracking vehicle costs
- 🔒 Secure data backup and sync options
- 🌟 Consistently updated and maintained by developer

**What reviewers complain about**

- 🐛 Occasional sync issues or data loss
- 💻 Lack of native iPad or CarPlay support
- 🔍 Limited ability to attach receipts or documents

**Reported bugs**

- Erratic behavior or data loss after iOS updates
- Inconsistent performance on older devices

**Requested features**

- Add support for electric vehicles and charging data
- Implement family sharing or multi-user capabilities
- Allow attaching photos or PDFs of receipts and documents


### Sonar

[App page](https://appshunter.io/ios/app/sonar-subscription-tracker/id6806039381)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sonar Pro | $11.99 | per year |
| Sonar Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Road Trip MPG free?

Road Trip MPG costs $6.99, with no in-app purchases.

### Is Sonar free?

Sonar is free to download, with in-app purchases available.

### Do Road Trip MPG or Sonar have ads?

Neither Road Trip MPG nor Sonar shows ads.

### Which is updated more often, Road Trip MPG or Sonar?

Road Trip MPG ships an update every 2 months, and Sonar weekly. Most recently, Road Trip MPG was updated on October 24, 2026 and Sonar on October 24, 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.*