Formlabs Mobile vs Sill
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formlabs Mobile
Monitor and control your 3D printers remotely. Check print status, resin levels, and remaining time. Watch builds with a live camera feed and receive push alerts for immediate attention.
- Real-time print status and progress
- Live camera feed of builds
- Push notifications for alerts
- Remote print start, pause, and cancel
- Manage multiple printers
- View print timelapses
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Your Formlabs printer, in your pocket. Form Mobile puts real-time control of your Formlabs printers right in your hand — so you can keep production moving whether you're down the hall or across the country. Stay informed, wherever you are. Check live print status, resin levels, and time remaining at a glance. Watch your build in progress with a live camera feed, and get push alerts the moment something needs attention — so you can catch issues before they cost you a print. Take control from anywhere. Start, pause, or cancel prints remotely. Queue your next job and kick off a print without standing over the machine. Manage a single printer or an entire farm from one view. KEY FEATURES • Real-time print status, progress, and material levels • Live camera feed to watch builds as they happen • Push notifications for alerts, completed prints, and low resin • Start, queue, pause, and cancel prints remotely • View timelapses from any printer, at any time • Manage multiple printers across your fleet • Securely synced with your Formlabs account Built for the Formlabs ecosystem. FormMobile works hand-in-hand with your connected printers and Formlabs software, so your workflow follows you everywhere. Less time in the room. More time making. Download FormMobile and take your workshop with you. Requires a Formlabs account and a compatible Formlabs printer.
Sill
Stream your Mac's desktop or individual windows to your iPhone or iPad. Control your computer remotely using touch, keyboard, or Apple Pencil with encrypted connections. Offers flexible streaming quality and connection options.
- Stream Mac windows or desktop to iPhone/iPad
- Remote control with touch, keyboard, Apple Pencil
- Encrypted connections with TLS 1.3
- Adjustable streaming quality and frame rate
- Virtual display option for continuous updates
- Multiple connection modes (Wired, Wi-Fi, Direct, Remote)
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Sill puts your Mac on your iPhone and iPad. Pick any window, or the whole desktop, and use it with touch, a trackpad, a keyboard or Apple Pencil. Your apps keep running on your Mac. Sill shows them and sends back what you do. Sill needs the free Sill for Mac on the Mac you want to use. Get it at getsill.app. It runs on a Mac with macOS 14 or later. Get started • Open Sill for Mac and allow Screen Recording and Accessibility. • Open Sill on your iPhone or iPad. Your Mac shows up. Tap it. The first time, scan the code your Mac shows. • Pick a window from the Apps list, or tap Desktop to see the whole screen. • The first time, a short tour shows you the controls. Made for touch • Tap to click. Touch and hold to right-click. Drag to scroll. • Apple Pencil works as a mouse, with hover on iPad models that support it. • Hold your device upright for a laptop layout: the picture on top, a trackpad and a row of keys below. On iPhone, turn on Larger Picture to give a window’s picture more of the screen. • On iPhone Duo, open it flat and your Mac fills the inner display. Half open, it’s a laptop: the picture above the fold, a trackpad and keys below. Closed, Sill runs on the cover display. • Type with the on-screen keyboard, or on a hardware keyboard as soon as you connect, with shortcuts and Esc. A trackpad or a mouse scrolls the window under the pointer. • Copy text on your Mac and paste it on your iPhone or iPad. To paste on your Mac what you copied on your device, tap Paste in Sill: it goes where your Mac’s cursor is. • Swipe and pinch with three fingers for Mission Control, App Exposé, Spaces, Apps and Show Desktop. • Use the menus of the app you’re in: tap Menus in the bar, or on iPad with iPadOS 26 or later, use the menu bar at the top of the screen. • Switch windows from live thumbnails in the bar. Touch and hold one to close, minimize or go full screen. Drag it to reorder. • When the mouse moves on your Mac, its pointer shows on your iPhone or iPad too. • Aa makes text larger or smaller. Smooth and sharp • Up to 120 frames per second on displays that support it. • Set quality, resolution and frame rate from your iPhone or iPad. • Hear sound from your Mac in step with the picture, a beta feature that is on unless you turn off Send Audio in Sill’s settings, on your Mac or your iPhone or iPad. Mute it on any device in Sill’s settings. Your Mac, your network • Connect over Wi-Fi, or over a USB cable. • Mac nearby but on another network? Turn on Direct Wireless Connection on the Mac and connect straight to it. • Pair each device with your Mac once by scanning a code. Over a USB cable it pairs by itself. By default your Mac lets in only the devices you paired, and every connection is encrypted. • Away from home, reach your Mac through your own VPN. Sill starts at a quality a slower connection can carry, tells you when the connection can’t keep up, and moves back to your home network by itself when you get home. Private • No account, no ads, no tracking. • Sill has no servers and collects no data. The picture and what you type go between your devices and your Mac, and to no one else. • Sill is free and open source (Apache 2.0): https://github.com/Saffsanity/sill Good to know • Sill shows one window, or the whole desktop, at a time. • Sill for Mac comes from getsill.app, not the Mac App Store.
Screenshots
Verdict
Formlabs Mobile and Sill both sit at 4.9 stars, but that hides the real split: 100% of Sill's written reviews are positive against 80% of Formlabs Mobile's. On price, rating, ratings volume and update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Formlabs Mobile against 4.9 for Sill. Both are backed by a comparable volume of ratings — 43 and 52 respectively. Written reviews are what separate them: 80% of Formlabs Mobile's written reviews are positive against 100% of Sill's.
Formlabs Mobile ships an update every 10 days, Sill every 2 weeks. The most recent releases landed on November 9, 2026 and November 8, 2026 respectively.
| Parameter | Formlabs Mobile | Sill |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (43 ratings) | 4.9 (52 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 43 | 52 — better |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 85 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Formlabs Inc. | NOAH WILLIAM SAFFER |
Customer experience
Formlabs Mobile
Sill
In-app purchases
Formlabs Mobile
No in-app purchases
Sill
No in-app purchases









