Comparison

Preen Display vs Signl

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

Head to head
About

Preen Display

Transform your iPad into a glanceable display for custom widgets created with simple text commands. Control devices, view feeds, or monitor data directly from your iPhone. Offers local network privacy and optional remote access via subscription.

Highlights
  • AI-powered widget creation via text prompts
  • Live display on iPad
  • Control and view widgets on iPhone
  • Customizable HTML, CSS, JavaScript widgets
  • Local network privacy
  • Optional remote access subscription
Features
Read full description

Preen Display turns an iPad on a stand into a live, glance-able display for widgets you ask for in a sentence. Tell your AI coding agent what you want — a TV remote, a revenue ticker, a security-camera feed — and the free Preen hub for Mac publishes it onto your iPhone. No code, no dashboard builder. Just a sentence. HOW IT WORKS 1. Run the free Preen hub on your Mac (preendisplay.com). 2. Ask your agent for a widget ("Make a power button that turns my Samsung TV on and off"). The hub's bundled MCP server and CLI do the rest. 3. The widget opens on your iPhone. Want a change? Ask your agent to publish an update. Widgets are plain HTML, CSS, and JavaScript — so you can also write and publish them yourself with the Preen command-line tool. IF YOU CAN SAY IT, YOU CAN GLANCE AT IT • A TV remote — on and off • What's playing right now: one big album art • A live security-camera feed • One-tap buttons for your busiest Slack channels • A focus stopwatch to keep your head down • Today's revenue, in numbers too big to ignore PRIVATE BY DESIGN No account required. By default your phone talks directly to your Mac over your own local network — your widgets and their data stay between your devices. TRY IT WITHOUT A MAC Tap "Preview a widget" on the first screen to see a live demo widget right away. PREEN PLUS (optional subscription) Preen Plus adds remote access: an end-to-end encrypted relay that keeps your display live when you and your Mac aren't on the same network. Terms of Use: https://preendisplay.com/terms Privacy Policy: https://preendisplay.com/privacy

About

Signl

Visualize your home Wi-Fi signal strength in 3D using your phone's camera or imported floor plans. Identify dead zones and optimize router placement for a flawless connection throughout your home.

Highlights
  • 3D Wi-Fi signal visualization
  • LiDAR room scanning
  • Floor plan import (photo/PDF)
  • Wi-Fi coverage mapping
  • Network diagnostics
  • Router/extender placement optimization
Read full description

See your WiFi painted onto a 3D map of your own home. Walk through your rooms with your iPhone. Signl measures the real signal in each one and shows you exactly where it drops, and where to move your router to fix it. WHAT YOU GET - 3D scan: walk through your home and watch the model build itself. LiDAR is used on iPhones that have it. - No LiDAR? Import a floor plan. Drop in a photo or a PDF and Signl reads the rooms. - Coverage map: every room measured and scored, weak spots marked where they actually are. - Live test: real speed and latency, measured from where you stand. Other apps give you a number. Signl gives you a place. Each measurement sits on the room it was taken in, so you know which wall is in the way and where the router belongs. YOUR SCANS STAY ON YOUR IPHONE The 3D model of your home never leaves your device. Nothing is stored on our servers. Floor plan photos are analyzed, then discarded. FREE AND PRO Scanning your home and building the 3D model are free. Signl Pro unlocks the full coverage heatmap, scores for every room, router placement recommendations and shareable reports. Signl Pro auto-renewable subscriptions: Yearly ($34.99/year) or Weekly ($5.99/week). A Lifetime purchase is also available. Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://signlwifi.com/privacy

Screenshots

Preen Display4 screens
Signl4 screens

Verdict

The call

The clearest difference is rating: Preen Display at 5.0 against Signl's 3.0. Signl's advantage is ratings volume (7 vs 1). On price, update cadence, ads and in-app purchases 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. Preen Display sells 2 in-app purchases, starting at $2.99 per month and Signl sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Preen Display holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Signl has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
Preen Display versus Signl: the parameters behind the verdict, then further details
ParameterPreen DisplaySignl
PriceFreeFree
Rating5.0 (1 ratings) — better3.0 (7 ratings)
Positive reviews—100.0% of reviews
Number of ratings17 — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size37 MB30 MB
Age rating4+4+
DeveloperPink Door Multimedia LLCVictor Backouche

Customer experience

Preen Display

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Signl

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Preen Display

Subscriptions2
  • Preen Plus (Monthly)7 Days trial$2.991 Month
  • Preen Plus (Yearly)7 Days trial$17.991 Year
3 purchases

Signl

Subscriptions2
  • Signl Pro — Weekly$6.997 Days
  • Signl Pro — Yearly$29.991 Year
One-time1
  • Signl Pro Lifetime$34.99

Questions

Is Preen Display free?
Preen Display is free to download, with in-app purchases available.
Is Signl free?
Signl is free to download, with in-app purchases available.
Which has better reviews, Preen Display or Signl?
Preen Display is rated higher. Preen Display averages 5.0 out of 5 from 1 ratings, while Signl averages 3.0 from 7 ratings.
Do Preen Display or Signl have ads?
Neither Preen Display nor Signl shows ads.
Which is updated more often, Preen Display or Signl?
Preen Display ships an update weekly, and Signl weekly. Most recently, Preen Display was updated on October 31, 2026 and Signl on October 31, 2026.

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