Comparison

Road Trip MPG vs Sonar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Road Trip MPG

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
Currently charting
Read full description

Road Trip is the fastest and easiest app for tracking of your car’s fuel economy, maintenance history, and expenses. Road Trip is a one-time purchase. There are no ads, subscriptions, or recurring fees. Your data is always private. Remember to checkout Road Trip Lite and Road Trip HD for the iPad. _____________________________ "There’s a ton of MPG apps on the App Store but Road Trip is the best because of its amazingly dense summary screen and its best in class fuel entry screen." — Jason D. O'Grady, zdnet.com "The most comprehensive road travel app of them all, Road Trip allows you to track mileage, fuel prices, graph out trip expenses, and even export the data to CSV" — Ben Parr, mashable.com "The part we like the most is the cool graph that shows fuel costs and average mpg over time. And it lets you look at the cost per day to keep those wheels turning." — Car and Driver Magazine _____________________________ Road Trip will… • Track your fuel economy and fuel costs. • Track your maintenance history. • Track and compare your vacations and trip costs. • Remind you when regular maintenance is due. • Prevent expensive premature maintenance. • Show you how much money you spend on your car. FEATURES • Mileage and fuel economy tracking. • Service and repair log, with service reminders. • Expense tracking. • Trip tracking and reporting. • Comprehensive statistics. • Full international support (Metric, US, and Imperial units). • Unlimited number of vehicles. • Full screen, interactive graphs. • Customizable Shortcuts • Home Screen Quick Actions • Siri voice integration COMPREHENSIVE STATISTICS • All key statistics and graphs on a single page. • Cost per day, Cost per km, Moving Average. • Maximum distance per tank. • Monthly and Yearly distance and cost estimates. • Vehicle depreciation statistics. AUTOMATIC BACKUP AND SYNC • Automatically sync between multiple of iOS device using Dropbox or iCloud. • Automatically backup to Dropbox, including CSV files. PRIVACY • Your Road Trip data always remains private. We do not collect data from your iOS device, and we do not have access to the data you store in iCloud or Dropbox. ADVANCED FEATURES • Tripmeter or Odometer distance entry. • Partial fill-ups, Same-day fill-ups, and Missed fill-ups. • Currency Conversion. • Geo-tagging and mapping. • Searching and filtering. • Jerrycan Fuel Tracking. • Trip Cost Calculator. • Distance-To-Empty Calculator. • Tire log, including support for summer and winter tires. • Distance correction for inaccurate odometers. • Monthly and Yearly distance and cost estimates. • Trip Computer Logging (fuel economy, average speed, temperature) • Graphs for comparing MPG vs. Fuel Type, Driving Conditions, Average Speed, and Temperature. • Odometer replacement. • Vehicle purchase price and depreciation tracking. • Import and Export CSV • Electric vehicle tracking (in kW.h) • Home electricity tracking (in kW.h) • Motorboat tracking (in Hours) _____________________________ Lots more information and screen shots on the website: https://darrensoft.ca/roadtrip/ Questions? Suggestions? We want to hear from you! Email us: support@darrensoft.ca

About

Sonar

Read full description

Sonar keeps every subscription you pay for in one place: what it costs, when it renews, and what you're spending a year. Then it does something your bank statement can't. It tells you which ones you've stopped using. WHAT MAKES SONAR DIFFERENT Link a subscription to its app, and Sonar uses Screen Time to count how often you actually open it. Once a month it reports the ones you barely touched. Not an estimate: a count of the days you opened it, or didn't. EVERY SUBSCRIPTION IN ONE PLACE - Add them by hand, pick from common services already priced for your country, or import them by screenshotting your Apple subscriptions page - See what you spend per month and per year at a glance - Mixed currencies are converted using published exchange rates, covering every currency the App Store bills in NEVER BE SURPRISED BY A RENEWAL - A reminder before every renewal, as many days ahead as you like - A calendar of what is coming and what it will cost SEE WHAT YOU ACTUALLY USE - Days opened across the last 30 days, and across the last year - A monthly report naming the subscriptions you barely opened - You set the bar for what "barely used" means COUNT WHAT YOU HAVE SAVED - Cancel something and Sonar counts the charges that never happened - Totalled per year, at the price you were actually paying PRIVATE BY DESIGN Screen Time tells Sonar one thing per app per day: opened, or not. Never how long, never what you did inside it, never anything about apps you have not linked. That record stays on your iPhone. Sonar has no account, no server and no analytics. HONEST ABOUT ITS LIMITS Sonar cannot read your real App Store subscriptions, because no such interface exists on iPhone. You add them, or import them from a screenshot. It cannot cancel anything for you either. And it only sees this iPhone, so an app you mostly watch on a TV will look unused here. SONAR PRO Sonar is free for up to 2 subscriptions, with every feature. Sonar Pro removes the limit. Two ways to buy: - Yearly, with a 1-month free trial - Lifetime, one payment, no renewals Prices are shown in your own currency before you buy. Payment is charged to your Apple Account at confirmation. A yearly subscription renews automatically unless cancelled at least 24 hours before the current period ends, and you can manage or cancel it in Settings › Apple Account › Subscriptions. A free trial that is not cancelled before it ends becomes a paid subscription. Terms of Use: https://romisoft.app/terms Privacy Policy: https://romisoft.app/privacy

Screenshots

Road Trip MPG4 screens
Sonar4 screens

Verdict

The call

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 (#13 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 7 level
Road Trip MPG versus Sonar: the parameters behind the verdict, then further details
ParameterRoad Trip MPGSonar
Price$6.99Free — better
Rating4.9 (629 ratings) — better—
Positive reviews93.4% of reviews—
Number of ratings629 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#13 — better—
DevicesiPhoneiPhone
Requires iOS18.517.0 — better
Further details — not scored
Size25 MB3 MB
Age rating4+4+
DeveloperDarren StoneRomisoft Ltd

Bugs and requests

Road Trip MPG

Reported bugs

2 issues
  • Erratic behavior or data loss after iOS updates
  • Inconsistent performance on older devices

Requested features

3 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Road Trip MPG

No in-app purchases

2 purchases

Sonar

Subscriptions1
  • Sonar Pro1 Month trial$11.991 Year
One-time1
  • Sonar Pro Lifetime$29.99

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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