Comparison

IOM Highways Pro vs 4Warning

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

Head to head
About

IOM Highways Pro

Navigate the Isle of Man's road network with real-time updates from electronic signs and traffic conditions. Plan your journeys efficiently and avoid congestion with live map data and instant notifications for sign changes.

Highlights
  • Live road sign feed
  • Real-time traffic map
  • Push notifications for sign changes
  • Journey planning
  • Congestion avoidance
Features
Read full description

Navigate the Isle of Man road network with confidence using the IOM Highways Pro app (formally the Read The Signs app) from the Isle of Man Department of Infrastructure. Stay informed about traffic conditions and potential issues before you hit the road with real-time updates from electronic road signs across the island. * Live Road Sign Feed: Access up-to-the-minute information from electronic signs to help you plan your journey efficiently. * Real-Time Traffic Map: View live traffic conditions on a detailed map to avoid congestion and delays. * Push Notifications: Subscribe to specific signs and receive instant push notifications when their information changes.

About

4Warning

This location-based service alerts users within a half-mile radius of live hazards and traffic disruptions. Report incidents like accidents with text, photos, or voice messages to help others avoid delays.

Highlights
  • Location-based hazard alerts
  • 1/2 mile alert radius
  • Report road accidents
  • Live map with incident icons
  • Share text, video, photo, voice messages
  • Avoid traffic delays
Features
Read full description

4Warning is a location-based app service that allows anyone who has downloaded this application to alert other members within a 1/2 mile radius of live hazards or disruptions when commuting around our cities and roads For example, if a 4Warning member(John Smith for example) observes a road accident that is causing built-up traffic he simply open the app and selects the road accident icon, and press enter. 4Warning then simply alerts all other members within 1/2mile of John’s position with a live map showing the road accident icon and additional information (text, video, photo, or voice message). This allows members the opportunity to avoid the area and delays. Drivers in the UK spend on average 115 hours per year in traffic jams. 4Warning was developed to help drivers avoiding unnecessary delays and costly disruptions to their daily commute. Privacy Policy & Terms of use: https://bit.ly/3CXmRDR

Screenshots

IOM Highways Pro4 screens
4Warning4 screens

Verdict

The call

The clearest difference is review sentiment: 4Warning at 80% against IOM Highways Pro's 29%. 4Warning also leads on update cadence (every 2 weeks vs every 30 months) and iOS requirement (13.2 vs 15.0). IOM Highways Pro's advantage is in-app purchases (none vs 1). On price, ads and device support 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

Both are free to download. 4Warning sells 1 in-app purchase, starting at $3.99 per year. IOM Highways Pro asks for nothing beyond the download.

UpkeepUpdate frequency

IOM Highways Pro ships an update every 30 months, 4Warning every 2 weeks. The most recent releases landed on July 24, 2026 and June 11, 2026 respectively.

Scorecard5 real differences · 5 level
IOM Highways Pro versus 4Warning: the parameters behind the verdict, then further details
ParameterIOM Highways Pro4Warning
PriceFreeFree
Rating—1.5 (2 ratings) — better
Positive reviews28.6% of reviews80.0% of reviews — better
Number of ratings—2 — better
Update frequencyEvery 30 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.2 — better
Further details — not scored
Size42 MB49 MB
Age rating4+4+
DeveloperSoftware Heads LimitedPaul Johnson

Customer experience

IOM Highways Pro

Written reviews14 reviews
Positive28.6%
Neutral14.3%
Negative57.1%

4Warning

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

IOM Highways Pro

No in-app purchases

1 purchases

4Warning

Subscriptions1
  • Yearly Plan$3.991 Year

Questions

Is IOM Highways Pro free?
IOM Highways Pro is free to download, with no in-app purchases.
Is 4Warning free?
4Warning is free to download, with in-app purchases available.
Do IOM Highways Pro or 4Warning have ads?
Neither IOM Highways Pro nor 4Warning shows ads.
Which is updated more often, IOM Highways Pro or 4Warning?
IOM Highways Pro ships an update every 30 months, and 4Warning every 2 weeks. Most recently, IOM Highways Pro was updated on July 24, 2026 and 4Warning on June 11, 2026.

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