Comparison

Apollo vs Smart GreenScreen

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

Head to head
About

Apollo

Enhance your Portrait Mode photos by adding and manipulating light sources after the shot. This app reconstructs a 3D map of your image, allowing real-time adjustments to color, intensity, and distance of lights for professional-looking results.

Highlights
  • Add light sources to Portrait Mode photos
  • Adjust light color, intensity, and distance
  • Real-time 3D light and shadow rendering
  • Create invisible light sources
  • Edit photos after they are taken
Features
Read full description

*** Apollo operates on Portrait Mode photos (requires iPhone 7 Plus, 8 Plus, X or NEWER). *** Apollo is the FIRST application that enables you to add light sources to your **Portrait Mode** photos, after the photo was taken! Apollo reconstructs a 3D map of your photo which you can augment with new light sources in real time. Take your portrait mode photographs from awesome to unforgettable by selecting the color, intensity, distance of a light and illuminate your photos and selfies to your heart's content. *** WARNING: Taking portrait mode photos requires iPhone 7 Plus, 8 Plus, X or NEWER. *** Apollo is the first app to use the depth data of your portrait mode photos to calculate photorealistic light and shadow. Using a proprietary processing algorithm running on your iPhone's graphics card, Apollo is able to render light sources on a portrait scene or selfie in real time. Apollo allows professional photographers and amateurs alike to try things that are not possible in the physical world. You can shape scene lighting by adding or even removing light. Since lights are computationally rendered in the scene, it is possible to put a light source within the frame: say hello to invisible lamps! The UI is optimised for use with one thumb, allowing you to always view the entire photo. One price, no in-app purchases and no subscriptions. We hope that Apollo is part of the computational photography revolution. We are doing our best but your support is crucial. Send us your feedback, ideas or bug reports on our support email. Show off your lighting chops on our social media outlets. --- Instagram: @apollo_illumination_app and share with tag: #apollo_illumination --- Facebook page: apollo.illumination --- Follow us on twitter: @Apollo_illum or share with tag: #apollo_illumination

About

Smart GreenScreen

Features
Read full description

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

Apollo4 screens
Smart GreenScreen4 screens

Verdict

The call

The clearest difference is price: Apollo at $2.99 against Smart GreenScreen's $4.99. Apollo also leads on iOS requirement (12.0 vs 17.6). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Apollo costs $2.99 and Smart GreenScreen $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Apollo ships an update monthly, Smart GreenScreen every 6 weeks. The most recent releases landed on October 22, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
Apollo versus Smart GreenScreen: the parameters behind the verdict, then further details
ParameterApolloSmart GreenScreen
Price$2.99 — better$4.99
Rating4.2 (447 ratings) — better—
Positive reviews46.6% of reviews—
Number of ratings447 — better—
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS12.0 — better17.6
Further details — not scored
Size21 MB7 MB
Age rating4+4+
DeveloperINDICE S.A.Stefan Hollekamp

Bugs and requests

Apollo

Reported bugs

3 issues
  • Unable to access full photo library
  • Crashes when trying to edit certain photos
  • Inconsistent performance across devices

Requested features

4 requests
  • Support for all photo types, not just portrait mode
  • Option to save and load custom lighting presets
  • Ability to control light direction and intensity
  • Integration with other photo editing apps

Smart GreenScreen

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Apollo

No in-app purchases

None

Smart GreenScreen

No in-app purchases

Questions

Is Apollo free?
Apollo costs $2.99, with no in-app purchases.
Is Smart GreenScreen free?
Smart GreenScreen costs $4.99, with no in-app purchases.
Do Apollo or Smart GreenScreen have ads?
Neither Apollo nor Smart GreenScreen shows ads.
Which is updated more often, Apollo or Smart GreenScreen?
Apollo ships an update monthly, and Smart GreenScreen every 6 weeks. Most recently, Apollo was updated on October 22, 2026 and Smart GreenScreen on October 9, 2026.

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