Blast Off vs Sill
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blast Off
This app connects to your electric skateboard to manage settings and view information. It allows for instant pairing, firmware checks, board customization, and offline access to saved configurations. Enjoy a personalized and reliable riding experience.
- Instant board connection
- Firmware version checker
- Board renaming and customization
- Offline mode for settings
- Dark mode interface
- Saved board configurations
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Blast Off – your complete Boosted Board companion app with offline capability! FEATURES: – Instant Connection: Quickly pair and connect with your Boosted Board to stay linked and ready to ride. – Firmware Checker: Check your board's firmware version instantly and stay up-to-date with the latest features. – Board Customization: Personalize your ride by renaming your board and making it uniquely yours. – Offline Mode: Access your boards and settings even without internet connection for uninterrupted riding. – Dark Mode: Enjoy a sleek, eye-friendly dark interface that's perfect for any lighting condition. – Saved Boards: Keep all your board configurations saved locally for quick access anytime. Whether you're commuting, exploring, or just having fun, Blast Off keeps you connected to your ride with style and reliability. Download now and elevate your Boosted Board experience!
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 shows a window from your Mac, or its whole desktop, on your iPhone or iPad, and lets you use it with touch, a keyboard, a touchscreen trackpad or Apple Pencil. It streams straight from your Mac to your device over your own network, so there is no account to create and no server in between. You pair each device once, and every connection is encrypted. Both parts are free: the Sill app for iPhone and iPad, and Sill for Mac. Streaming: * Any single Mac window, or the whole Desktop, on your iPhone or iPad * Hardware HEVC video, up to 120 fps on ProMotion screens (60 elsewhere); the rate follows each device * Seven bitrate quality presets, from Low (4 Mbps) to Extreme (150 Mbps), plus Resolution, a frame-rate limit and Prioritize Encoding Speed * Text size (Aa): resizes your Mac window to fit your screen, so text is the size you want * Optional virtual display: a window streams from its own HiDPI display, sized to your device, and keeps updating even when covered on your Mac; full-screen video works too Controls: * Touch: tap to click, drag to scroll with momentum, touch and hold to right-click * Apple Pencil as the mouse, with hover * Software and hardware keyboards, with ⌘, ⌃ and ⌥ shortcuts, plus a key row with latching modifiers and a Spotlight key * Laptop layout when you hold the device upright: the picture on top, a key row and a trackpad (two-finger scroll, two-finger tap, hold then drag, three-finger gestures for Mission Control, App Exposé, switching Spaces, Apps and Show Desktop) * Dedicated iPhone and iPad layouts * Each Mac app's menus (File, Edit, View, etc) on your device, behind a Menus button * Window thumbnails: switch with a tap; hold one for close, minimize and full screen; drag to reorder * An Apps drawer: open windows and all installed apps, with search, and it launches apps Connecting: * Finds your Mac automatically; each Mac has 4 modes: Wired, Wi-Fi, Direct or Remote * USB cable (Wired) support, and a live session moves between the cable and Wi-Fi without dropping * Direct Wireless Connection (Direct, optional), for when you and your Mac don't share a network * Remote Access from anywhere through your own VPN, such as Tailscale, or a port forward * Pairing: every connection encrypted with TLS 1.3; pair each device once by QR code or a 12-digit code, and a USB cable pairs by itself; Require pairing is on by default * Your Mac keeps its keys in the protected part of its keychain that only Sill can read Sill for Mac: * A ~6 MB menu bar app with a live status card: each device, its frame rate and latency * Settings: General, Devices, Streaming, Virtual Display, Remote Access and Permissions * Launch at Login, a log window, and an update check that tells you when a new version is out * A notarized disk image download from getsill.app Sill for iPhone and iPad: * A Settings panel that changes your Mac's stream settings, and shows the connection and latency * A first-run tour, and Take the Tour to replay it * Tells you when your Mac or the device needs an update Free and open source (Apache 2.0) No account, no servers, no tracking: video goes straight from your Mac to your device, forever! Website: https://getsill.app/ GitHub: https://github.com/Saffsanity/sill Site GitHub: https://github.com/Saffsanity/sill-site
Screenshots
Verdict
The clearest difference is update cadence: Sill at every 2 days against Blast Off's every 3 weeks. Sill also leads on ratings volume (44 vs 4). Blast Off's advantage is iOS requirement (12.0 vs 17.0). On price, rating, review sentiment and ads 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.
Sill holds the better App Store score, 4.9 against 4.8. That said, the two scores are not equally well evidenced: Sill has 44 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Blast Off ships an update every 3 weeks, Sill every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Blast Off | Sill |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) | 4.9 (44 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 44 — better |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 27 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Big Numbers, Inc. | NOAH WILLIAM SAFFER |
Customer experience
Blast Off
Sill
In-app purchases
Blast Off
No in-app purchases
Sill
No in-app purchases









