Comparison

Bosun vs Arrk

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

Head to head
About

Bosun

Features
Read full description

Bosun is a native iOS and iPadOS control panel for servers running TrueNAS SCALE or Unraid — not just dashboards, but the actual control panel. Pools, apps, virtual machines, shares, users, snapshots, every action the web UI offers, made for touch and built for your pocket. It talks to your server directly, over TrueNAS's WebSocket API or Unraid's built-in API. No middle-man cloud, no Bosun account, no tracking — the app connects straight to your own server, and nothing you do leaves it. WHAT YOU CAN DO • Dashboard — live CPU, memory, network and disk I/O with rolling sparklines, pool health, days until each pool is full, alerts, jobs and a security posture score, all at a glance. Tap a tile for ten minutes of history. • Monitors — your own thresholds (pool capacity, disk temperature, a stopped service, an overdue scrub…) with a notification the moment one fires. • Storage — pools with a topology map of every vdev and disk, datasets with the details the web UI shows, capacity trends, and a long-press to start, pause or stop a scrub. • Apps — live CPU and memory per app; start, stop, update and roll back; browse the catalog with a full preview before you install. • Instances — virtual machines and containers, with live state while the screen is open. • Data protection — snapshot and scrub schedules you can edit, replication and cloud-sync status, and snapshots you can browse, hold, roll back or clean up. • Health & Security — two dozen read-only checks that name what needs attention, from pool redundancy to passwordless sudo. • Alerts — dismiss or snooze, and set up instant push through TrueNAS's own alert services (Telegram, Slack, PagerDuty…) with a test button. • Reporting — CPU, memory, network, load and temperature history from an hour to a month; pinch to zoom, compare with the previous period. ON UNRAID • Array — capacity, every parity, data and cache disk with temperatures, and parity checks you can start, pause or cancel, with their history. • Docker — every container's state; start, stop, restart, pause and update. • VMs — start, pause, resume, stop and force stop. • Notifications, shares, disks and UPS, plus the same widgets, Apple Watch app, monitors and Control Mode. BUILT FOR iOS Tab-bar and iPad split-view layouts, pull-to-refresh, search, haptics, Live Activities that track a long job to completion, and Siri shortcuts ("Is my NAS healthy?"). Seven widgets for the Home Screen, Lock Screen and StandBy — storage per pool, alerts, apps, performance, monitors, server status, and a glance you configure. An Apple Watch app with six pages and three complications. Multiple servers you switch between in a tap, reachable at home or away from the same profile — or try a built-in sample server (TrueNAS or Unraid) before you connect anything. SECURE BY DEFAULT Every change asks for Face ID or your passcode first — Control Mode — and locks itself again after a few minutes so nothing changes by accident. API keys live only in the iOS keychain, and Bosun pins your server's certificate on first connect and refuses a changed one. Bosun is free to use, with no ads, accounts, subscriptions or tracking. Everything that keeps your server safe and visible stays free. An optional one-time Bosun Plus purchase adds more than three servers, Fleet health and drift, a weekly report, a year of history with CSV export, quiet hours with a daily digest, and alternate icons and accents. Family Sharing is on. In English, Portuguese, Spanish, German and French. Bosun needs a server you already run: TrueNAS SCALE 25.04 or newer, or Unraid 7.2 or newer. Bosun is an independent app, not affiliated with or endorsed by iXsystems, Inc. or Lime Technology, Inc. TrueNAS® is a registered trademark of iXsystems, Inc. Unraid® is a registered trademark of Lime Technology, Inc.

About

Arrk

Manage your Radarr and Sonarr media servers directly from your iPhone. Browse your library, track downloads, and organize titles without needing a web browser. Connect securely via Wi-Fi or VPN.

Highlights
  • Connect to Radarr/Sonarr servers
  • Browse media library
  • Track download progress
  • Organize titles with tags
  • View upcoming releases calendar
  • Search media history
Features
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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

Bosun4 screens
Arrk4 screens

Verdict

The call

The clearest difference is in-app purchases: Arrk at none against Bosun's 1. Bosun's advantage is update cadence (every 2 days vs every 5 days) and device support (3 vs 1). On price, ads 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

Both are free to download. Bosun sells 1 one-off in-app purchase. Arrk asks for nothing beyond the download.

UpkeepUpdate frequency

Bosun ships an update every 2 days, Arrk every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Bosun versus Arrk: the parameters behind the verdict, then further details
ParameterBosunArrk
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size32 MB49 MB
Age rating4+4+
DeveloperAndre VidalAlessandro Mazzon

In-app purchases

1 purchases

Bosun

One-time1
  • Bosun Plus$3.99
None

Arrk

No in-app purchases

Questions

Is Bosun free?
Bosun is free to download, with in-app purchases available.
Is Arrk free?
Arrk is free to download, with no in-app purchases.
Do Bosun or Arrk have ads?
Neither Bosun nor Arrk shows ads.
Which is updated more often, Bosun or Arrk?
Bosun ships an update every 2 days, and Arrk every 5 days. Most recently, Bosun was updated on October 28, 2026 and Arrk on October 31, 2026.

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