Comparison

Long Exposure Toolkit vs backAR Green Screen

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

Head to head
About

Long Exposure Toolkit

This app provides DSLR photographers with a suite of tools for creating long exposure photographs. It includes calculators for ND filters, light metering, time-lapses, and exposure values, along with tips and a photo feed for inspiration.

Highlights
  • ND Calculator
  • Light Meter
  • Timelapse Calculator
  • Exposure Value (EV) Calculator
  • Star Trail Calculator
  • Exposure Timer
  • Flickr Photo Feed
Features
Read full description

Beautiful light doesn’t happen by accident. Long Exposure Toolkit gives creative photographers the tools to plan the light, find the moon and stars, calculate long exposures, and get the shot right — from golden hour to deep into the night. PLAN THE LIGHT, NOT JUST THE SHOT Track every phase of natural light throughout the day, including civil and nautical dawn, blue hour, golden hour, solar noon, sunset and dusk. Follow the live sun-path arc, see exact times for every transition, and get a live countdown to your next photographic window. MOON, STARS, AND THE NIGHT SKY Point your iPhone at the sky and the Moon Finder guides you towards the moon using the live camera and a precision compass rose. Follow the moon’s path through the night, check moonrise and moonset for your location, and plan for upcoming lunar eclipses. For star-trail photography, choose any star or constellation from the built-in catalogue and view its declination arc — ideal for planning and compositing very long star-trail exposures. LONG EXPOSURES, MADE PRECISE Use the built-in light meter to measure the scene, select your ND filter strength, and quickly calculate the corrected shutter speed. When exposures run into minutes or hours, the built-in timer counts them for you and chimes when they’re complete. THE COMPLETE TOOLKIT • Golden Hour — a light planner for golden hour, blue hour, dawn, dusk, solar noon and live sun-path tracking • Moon Finder — locate the moon, follow its path, and check moonrise, moonset, eclipse and other information • Star Trails — view declination arcs for stars and constellations to help plan long star-trail exposures • Light Meter — live camera metering with ISO, aperture and shutter-speed readout • ND Calculator — calculate corrected exposure times for ND filters • Timelapse — calculate the interval and number of shots required for your chosen movie length • Stops — calculate the exposure difference between any two f-stops, shutter speeds or ISO values • EV Calculator — calculate exposure value from camera settings or measure the EV of the current scene • Timer — time long exposures with an audible alert when the exposure is complete • Torch — adjustable LED torch plus a screen light with a full colour picker for light painting; save your favourite colours for quick access • Inspiration — browse long-exposure photography from the Flickr community and see the camera settings used to create each image • Technique — more than 70 tips covering long-exposure technique, ND filters, subjects, camera settings, focusing and field craft Whether you’re photographing silky water, moving clouds, city lights, the moon, blue hour or star trails, Long Exposure Toolkit gives you the essential planning and exposure tools all in one place.

About

backAR Green Screen

Transform your surroundings into immersive 3D virtual environments. This app uses your device's camera to place you within dynamic scenes, allowing you to move and capture photos or videos from any angle with realistic lighting. No physical green screen is required.

Highlights
  • 360° 3D virtual backgrounds
  • Real-time virtual lighting
  • Capture photos and videos
  • Move and shoot from any angle
  • Import custom backgrounds
  • No physical green screen needed
Read full description

Choose from a variety of 360° green screens. Your environment will be replaced with a 3D scene, only people will appear. Move around in 3D and take photos and videos from any angle. The virtual lighting mimics real world lighting in real time. No need for a green screen nor a professional studio, use your iOS device to immerse yourself in a virtual scene anywhere you are. Import your photos and add them as a background. The app uses the back camera.

Screenshots

Long Exposure Toolkit4 screens
backAR Green Screen4 screens

Verdict

The call

The clearest difference is review sentiment: Long Exposure Toolkit at 100% against backAR Green Screen's 33%. Long Exposure Toolkit also leads on in-app purchases (none vs 1) and rating (4.5 vs 4.1). backAR Green Screen's advantage is ratings volume (137 vs 4) and price ($4.99 vs $5.99). On update cadence, ads 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

Long Exposure Toolkit costs $5.99 and backAR Green Screen $4.99 up front. backAR Green Screen sells 1 one-off in-app purchase. Long Exposure Toolkit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Long Exposure Toolkit holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: backAR Green Screen has 137 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Long Exposure Toolkit's written reviews are positive against 33% of backAR Green Screen's.

UpkeepUpdate frequency

Long Exposure Toolkit ships an update every 3 months, backAR Green Screen every 2 months. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
Long Exposure Toolkit versus backAR Green Screen: the parameters behind the verdict, then further details
ParameterLong Exposure ToolkitbackAR Green Screen
Price$5.99$4.99 — better
Rating4.5 (4 ratings) — better4.1 (137 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings4137 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size30 MB275 MB
Age rating4+4+
DeveloperAndrew OffieldElie F. Gebran

Customer experience

Long Exposure Toolkit

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

backAR Green Screen

All ratings137 ratings
Positive75.2%
Neutral8.8%
Negative16.1%
Written reviews9 reviews
Positive33.3%
Neutral11.1%
Negative55.6%

In-app purchases

None

Long Exposure Toolkit

No in-app purchases

1 purchases

backAR Green Screen

One-time1
  • All Scenes$4.99

Questions

Is Long Exposure Toolkit free?
Long Exposure Toolkit costs $5.99, with no in-app purchases.
Is backAR Green Screen free?
backAR Green Screen costs $4.99, and also offers in-app purchases.
Which has better reviews, Long Exposure Toolkit or backAR Green Screen?
Long Exposure Toolkit is rated higher. Long Exposure Toolkit averages 4.5 out of 5 from 4 ratings, while backAR Green Screen averages 4.1 from 137 ratings.
Do Long Exposure Toolkit or backAR Green Screen have ads?
Neither Long Exposure Toolkit nor backAR Green Screen shows ads.
Which is updated more often, Long Exposure Toolkit or backAR Green Screen?
Long Exposure Toolkit ships an update every 3 months, and backAR Green Screen every 2 months. Most recently, Long Exposure Toolkit was updated on October 2, 2026 and backAR Green Screen on October 13, 2026.

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