Comparison

Prometheus Mobile STO vs YaArr

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

Head to head
About

Prometheus Mobile STO

Features
Read full description

Prometheus STO Mobile is a Prometheus Group Platform that is an easy-to-use interface and framework to address shut-down, turn-around, and outages of heavy assets in various industries. Prometheus Group is the leading enterprise asset management software solution provider, covering your plant maintenance, operations, and safety needs from planning to execution and beyond.

About

YaArr

This app provides a unified remote interface for managing your self-hosted media server stack. It allows you to monitor and control various services like Sonarr, Radarr, and download clients directly from your iOS device. No cloud backend or account is required, ensuring your data stays private.

Highlights
  • Unified remote interface for media servers
  • Monitor Sonarr, Radarr, Lidarr, and more
  • Manage download clients and queues
  • Browse and manage media libraries
  • Discover and request media
  • Multi-server support and profiles
  • Secure credential storage
Features
Read full description

YaArr — Your Self-Hosted Servers, One App A native iOS companion app for monitoring and managing your self-hosted media server stack. YaArr provides a unified remote interface for your *arr services and server applications — no cloud backend, no account required. YaArr contains no media catalog, no player, and no content of its own. It does not host, stream, or store media, and nothing is ever downloaded to your device. Every screen shows data from software you already run on your own hardware, and every action is a command sent to that software. SUPPORTED SERVICES Media Management: • Sonarr — TV series management • Radarr — Movie management • Lidarr — Music management Indexers & Search: • Prowlarr — Indexer management • Newznab-compatible indexers you configure yourself Subtitles: • Bazarr — Subtitle management Requests & Discovery: • Overseerr — Media requests • Jellyseerr — Jellyfin media requests Download Clients: • SABnzbd, NZBGet, qBittorrent, Deluge, Transmission • Remote queue monitoring, pause/resume, and status Monitoring & Stats: • Tautulli — Plex activity and stats • Jellystat — Jellyfin statistics User Management: • Wizarr — User invitations Server Access: • SSH Terminal and SFTP file browser REMOTE DASHBOARD Your Home tab gives you an at-a-glance overview of everything happening across all your servers. See queue status, upcoming calendar items, active streams, and recent additions — all in one place. LIBRARY MANAGEMENT Browse and manage your media libraries remotely. View your TV series, movies, and music collections. Check episode details, monitor missing content, and keep everything organized without opening a browser. QUEUE MONITORING Monitor your server queues in real time. See what's active, what's queued, and what needs attention. Get badge alerts when items need intervention so nothing slips through the cracks. DISCOVER & REQUEST Browse trending and upcoming movies and TV shows, and submit or manage media requests through Seerr. Search the indexers you have configured on your own Prowlarr or Newznab server and hand results to your own download client — the same actions those tools offer in their web interfaces. MULTI-SERVER & PROFILES Connect as many servers as you need. Create profiles to organize servers into groups — perfect for managing separate setups or switching between environments with a single tap. BUILT FOR iOS YaArr is designed from the ground up as a native iOS app with the latest Liquid Glass design language. It's fast, fluid, and feels right at home on your iPhone. • Siri Shortcuts — Automate common tasks with built-in shortcuts • Pull-to-refresh on every screen • Secure credential storage using the iOS Keychain PRIVACY & SECURITY Your server credentials never leave your device. API keys are stored securely in the iOS Keychain, and all communication happens directly between your device and your servers. No third-party cloud. No account required. GET STARTED IN SECONDS Add a server, enter your URL and API key, and you're connected. YaArr auto-detects the service type and links instantly.

Screenshots

Prometheus Mobile STO4 screens
YaArr4 screens

Verdict

The call

The clearest difference is in-app purchases: Prometheus Mobile STO at none against YaArr's 1. Prometheus Mobile STO also leads on iOS requirement (11.0 vs 26.0). YaArr's advantage is update cadence (fortnightly vs every 3 months). 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. YaArr sells 1 one-off in-app purchase. Prometheus Mobile STO asks for nothing beyond the download.

UpkeepUpdate frequency

Prometheus Mobile STO ships an update every 3 months, YaArr fortnightly. Both last shipped on September 14, 2026.

Scorecard3 real differences · 7 level
Prometheus Mobile STO versus YaArr: the parameters behind the verdict, then further details
ParameterPrometheus Mobile STOYaArr
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better26.0
Further details — not scored
Size41 MB32 MB
Age rating17+4+
DeveloperPROMETHEUS GROUP, INC.GREG SCOTT MOORE

In-app purchases

None

Prometheus Mobile STO

No in-app purchases

1 purchases

YaArr

One-time1
  • YaArr Pro - Remove Ads$1.99

Questions

Is Prometheus Mobile STO free?
Prometheus Mobile STO is free to download, with no in-app purchases.
Is YaArr free?
YaArr is free to download, with in-app purchases available.
Do Prometheus Mobile STO or YaArr have ads?
Neither Prometheus Mobile STO nor YaArr shows ads.
Which is updated more often, Prometheus Mobile STO or YaArr?
Prometheus Mobile STO ships an update every 3 months, and YaArr fortnightly. Most recently, Prometheus Mobile STO was updated on September 14, 2026 and YaArr on September 14, 2026.

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