Comparison

WFS300 vs Arrk

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

Head to head
About

WFS300

This application simplifies vehicle security by allowing your iPhone to act as a key. Simply enable the phone-tag feature, and your car will automatically disarm when your iPhone is nearby, even when in sleep mode. All communication is encrypted for enhanced security.

Highlights
  • Automatic vehicle disarming
  • iPhone as a key
  • Encrypted communication
  • No PIN code required
  • Works in sleep mode
Features
Read full description

The AMPIRE WFS300-BT is a unique immobilizer that uses the latest technology to secure your vehicle. To make security even easier we have added this special application for your iPhone that allows you to just get in the car and drive. No need to use your immobilizer PIN code to disarm the AMPIRE WFS300-BT. Just enable this phone-tag and as soon as your iPhone is near your car you will be able to drive, even if your iPhone is in sleep mode in your pocket. All communication is encrypted and secure.

About

Arrk

Features
Read full description

Arrk is a native iPhone app for your Radarr and Sonarr servers. Browse your library, add missing titles, choose releases and track downloads without opening a browser. • Connect directly to your servers over local Wi-Fi or a VPN such as Tailscale. No Arrk account and no cloud relay. • Server addresses and API keys stay securely in your iPhone keychain. • Automatic discovery finds Radarr and Sonarr on your network, so you do not need to look up IP addresses or ports. • See upcoming movies and episodes from every server in one calendar, grouped by date, with premieres and finales highlighted. • Browse each library as a fast poster grid or compact list, with search, sorting and filters for available, missing and monitored titles. • See artwork, cast, ratings, seasons and files together on clear, detailed pages. • Add titles using your existing quality profiles and root folders, or search releases manually and compare quality, size and seeders. • Organise your library with Radarr and Sonarr tags: tag titles from their detail page or while adding them, and tidy up unused tags in server settings. • View both queues on one screen, follow progress in real time and get notified when a download finishes. Server health and free disk space are always close at hand. • Search your history of grabs, imports and failures, with the tools you need to deal with anything that gets stuck. • Make it yours with an accent colour, light or dark mode, haptics and animations. Available in English, Italian, Spanish, German and French. Arrk requires a Radarr and/or Sonarr installation that your iPhone can reach over local Wi-Fi or VPN.

Screenshots

WFS3002 screens
Arrk4 screens

Verdict

The call

The clearest difference is update cadence: Arrk at every 5 days against WFS300's every 3 months. WFS300's advantage is iOS requirement (8.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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

UpkeepUpdate frequency

WFS300 ships an update every 3 months, Arrk every 5 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Ā· 6 level
WFS300 versus Arrk: the parameters behind the verdict, then further details
ParameterWFS300Arrk
PriceFreeFree
Positive reviews31.3% of reviews—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS8.0 — better16.4
Further details — not scored
Size14 MB49 MB
Age rating4+4+
DeveloperAmpireAlessandro Mazzon

In-app purchases

None

WFS300

No in-app purchases

None

Arrk

No in-app purchases

Questions

Is WFS300 free?
WFS300 is free to download, with no in-app purchases.
Is Arrk free?
Arrk is free to download, with no in-app purchases.
Do WFS300 or Arrk have ads?
Neither WFS300 nor Arrk shows ads.
Which is updated more often, WFS300 or Arrk?
WFS300 ships an update every 3 months, and Arrk every 5 days. Most recently, WFS300 was updated on October 16, 2026 and Arrk on October 24, 2026.

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