starCTRL vs Smart GreenScreen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
starCTRL
Design custom lighting setups with this app. Connect and control compatible fixtures, adjusting color, intensity, and effects. Save presets and group lights for complex designs.
- Auto-discovery of compatible fixtures
- Control lamp color and intensity
- Adjust color temperature and green offset
- Access built-in lighting effects
- Group lights for larger designs
- Save favorite colors and effects
- Set smooth transitions with fade times
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Designed for Litepanels Astra IP and Quasar Science Rainbow 2 and Double Rainbow, starCTRL is a simple-to-use app that allows users to connect wirelessly, create custom lighting designs and quickly adjust standard parameters. Unlock fast and creative lighting designs with the starCTRL app. 1. Connect instantly The starCTRL app is compatible with the following fixtures: - Quasar Science Rainbow 2 and Double Rainbow - Litepanels Astra IP series Supported fixtures are automatically discovered by starCTRL for fast easy setup. Simply set your lights to starCTRL mode in the fixture menu and open the starCTRL app — it’s that simple! 2. Control simply Take full control of your lights from your fingertips. Quasar Science control parameters: Intensity, CCT (1750-10000K), ±Green, Hue, Saturation, Output Mode, and FX Litepanels Astra IP control parameters: DIM and CCT (2700-6500K) Quickly adjust color and temperature using common presets. Access the full range of Rainbow series lighting effects, with the ability to fine-tune individual effect parameters. 3. Customize Group lights for more complex designs. Apply settings to an entire group or fine-tune individual fixtures. Save your own Colors and FX settings to Favorites for quick recall onto any selected fixture or group. Enable smooth transitions by setting a fade time of up to 5 seconds. Firmware Requirements Rainbow 2 & Double Rainbow - Recommended*: QS 0.9B with TimoTwo v1.1.1.5 - Minimum compatible: QS 0.8B with TimoTwo v1.0.7.2 *iOS26 users must update to recommended versions or later Litepanels Astra IP - Firmware v1.5.0 with VLPM v1.0.2m (or later)
Smart GreenScreen
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Smart GreenScreen is a professional chroma key app for macOS and iOS with tracking markers, overlay support, and high-resolution PNG export. It replaces a selected background color (for example green) with another color and helps with camera tracking, livestreams, conferencing, and studio production workflows. Core Features Greenscreen / Chroma Key • Replaces a background color with another color in real time. • Adjustable RGB and brightness for both background and marker colors. • 25 color presets for fast setup. • “Slider for marker” toggle: sliders can control either background or marker color. • Tab key toggles greenscreen on/off (black when off). • Overlay image with alpha support (PNG transparency). Tracking Markers • 4 marker types: 1) Cross 2) Triangle target 3) Checkerboard circle 4) Circle+Cross • Up to 12 markers simultaneously. • Adjustable marker size (3–25% of screen). • Adjustable stroke width for cross-style markers (2–12). • Invert option for better visibility. • Add, move, and delete markers with dedicated modes and clear visual mode indicators. • Default marker color is black on first launch for strong contrast on green backgrounds. Overlay Tools • Collapsible Overlay section in Settings. • Base overlay image: Load/Remove PNG with transparency. • Floating PNG overlays: import multiple transparent PNGs, place them freely on screen, and position them like markers. • Floating overlays can be moved and deleted using the same Move/Delete workflow as markers. • Dedicated delete action for the overlay image. High-Resolution PNG Export (Unique Feature) • Export the current greenscreen scene as PNG, including markers and overlays. • Preset export sizes from HD up to 8K. • Custom pixel size input for any workflow. • iOS export options: • Share sheet export (AirDrop, Messages, Mail, etc.) • Save to Files / iCloud • macOS export via native save dialog. • Great for VFX planning, camera-tracking references, scene setup docs, and still frame delivery. Keyboard Features (iOS) • Optional on-screen keyboard for blind typing on the greenscreen. • “On marker tap only” mode: keyboard appears when tapping a marker, hides with Enter. • Optional clean typing mode with reduced suggestion/autocorrect distractions. • External keyboard support with Tab toggle behavior matching macOS. Menu Access • macOS: Shift+Click or Cmd+M. • iOS: 3-finger tap (always available), configurable multi-tap (3–10), or long press. Settings & UX • Save & Load Greenscreen Presets • Auto-saved settings. • Reset to defaults. • Collapsible sections for clearer navigation (Colors, Marker, Overlay, Keyboard Setup, Presets, Export). • Consistent icon-based controls and improved spacing for fast operation during production. Technical Details • Built with SwiftUI. • Localization: DE, EN, ES, FR, IT, JA, PT, RU, ZH. • Settings stored as JSON in Application Support. • macOS: window + fullscreen, optional auto-hiding title bar. • iOS: fullscreen layout optimized for notch and different screen sizes. Target Audience • Video production / post-production • Livestreaming • Video conferencing • Camera tracking with greenscreen backgrounds • Presenters and performers using marker-based typing workflows
Screenshots
Verdict
The clearest difference is price: starCTRL at Free against Smart GreenScreen's $4.99. starCTRL also leads on iOS requirement (14.0 vs 17.6). Smart GreenScreen's advantage is update cadence (every 6 weeks vs every 6 months). On ads, in-app purchases 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
starCTRL is free to download; Smart GreenScreen costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
starCTRL ships an update every 6 months, Smart GreenScreen every 6 weeks. The most recent releases landed on June 1, 2026 and September 23, 2026 respectively.
| Parameter | starCTRL | Smart GreenScreen |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 2.9 (7 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Videndum Production Solutions, Inc. | Stefan Hollekamp |
In-app purchases
starCTRL
No in-app purchases
Smart GreenScreen
No in-app purchases
Questions
Is starCTRL free?
Is Smart GreenScreen free?
Do starCTRL or Smart GreenScreen have ads?
Which is updated more often, starCTRL or Smart GreenScreen?
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