Appworthy

R4 Companion

Uniden R4 Radar Detector

Angela Mcarthur
Download on theApp Store
App Store rating4.8★638 ratings
Price$9.99In-app $1.99–$9.99
Age4+Store age rating
Size15 MBiPhone download
CategoryUtilities
DeveloperAngela Mcarthur

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • $9.99 to download · in-app purchases $1.99–$9.99 (4 listed). The store doesn’t say how often these bill.
  • If you subscribe through the store, cancel in iPhone Settings → your name → Subscriptions. Deleting the app doesn’t cancel a subscription.

Not yet tested.

The store currently lists version 1.25.4, updated 2026-09-16.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

CarPlay Support!

NOTE: R4 Companion™ requires a Uniden R4 or R4w radar detector with US Version 142 (R4) or 127 (R4w) firmware to function correctly. R4 Companion will NOT function correctly without at least this version of firmware.

R4 Companion™ is a feature rich app, designed to give you the most out of your R4, while enhancing your driving experience along the way. Featuring intelligent alerts and advanced muting! R4 Companion™ is the COMPLETE solution to enjoying your R4.

SpotLock 2.0 and Advanced False Assist 3.0. Both data driven systems have been updated using 5 years of historical data. This takes your detector to a whole new level of quietness and safety against real threats.

The R4 Companion™ app leverages years of optimizations and features from the Radar Companion™ series of apps. (Available separately for owners of the V1, R8, R9, & DS1 radar detectors).…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

3 measured · 5 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
80–89% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 1.25.4 · 2026-09-16
Now works with CarPlay! "Feels like a new detector!", -e This is what people are saying after using R4 Companion™ - See what all the fuss is about, try it for yourself! New for version 1.25: • Settings screen added under CarPlay nav search button. • All new audio engine handles navigation, speech & detector tones seamlessly with options for output style, voice, speech rate, etc. • Option for altitude and car voltage on 'Active' banner. • Options for 'Nav Mute' Speaker Tap -> “Unmute” On tap, or after 5, 10, 15, 30 mins. • Option to include Alerts & Tones for nav mute tap. • Option to include all Detector audio for nav mute tap (kill switch). • CarPlay fixes for light & dark map display…

Shortened here; the full notes are on the store listing.

Assessment record

Status
Not yet tested
App identifier
r4-companion
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.77 ★ · 638 ratings
Version
1.25.4
Updated
16 Sep 2026
Price
$9.99
Age rating
4+
Size
15 MB
Open in App Store
Developer
Angela Mcarthur
Category
Utilities
Listing price
$9.99

Purchases the store lists

 What this app sells

From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.

Show 4 more purchases we couldn’t categorise

These are really on sale; we just can’t tell from the name whether they recur.

Drinks - ContributionTerm not stated$3.99
Super Fan - ContributionTerm not stated$9.99
Snacks - ContributionTerm not stated$1.99
Lunch - ContributionTerm not stated$6.99

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

Request a correction

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