Comparison

KeyLight PRO vs Cascable Studio

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

Head to head
About

KeyLight PRO

This app simplifies off-camera flash photography by providing calculators for optimal exposure settings. It helps photographers determine ISO, aperture, strobe power, and distance, removing guesswork for both beginners and advanced users. Manage multiple lighting setups and modifiers with its virtual gear bag.

Highlights
  • Exposure calculators (ISO, aperture, strobe power, distance)
  • Key Falloff calculator
  • Virtual Gear Bag for unlimited strobe configurations
  • Strobe Library with 100+ pre-loaded models
  • Support for various light modifiers
  • Save multiple setups
Features
Read full description

Shooting off-camera flash photography is challenging. Optimal exposure settings requires a knowledge of how to balance ISO sensitivity, aperture level, strobe power and strobe proximity to the subject. Because strobe power varies dramatically not only between manufacturers and models but also when external elements such as umbrellas, soft-boxes and lighting gels are used, quickly determining correct exposure settings can be challenging at best, and frustrating at the worst. KeyLight PRO removes all of this guesswork. Easy-to-use calculators quickly and clearly display optimal ISO levels, aperture settings, strobe power levels and strobe-to-subject distances in an intuitive, familiar interface. For the more advanced photographer, the Key Falloff calculator will calculate the proximity of the strobe from the subject in order to meet a desired exposure value falloff over a specific distance. For example, the area behind a subject is 10 feet away, should be 3 stops underexposed relative to the subject, and the strobe is firing at 1/4 power and the camera is at ISO 400. What should the aperture setting be on the camera? With KeyLight PRO, the answer is a tap away. How many strobes does KeyLight PRO support? The Virtual Gear Bag provides an unlimited number of strobe makes, models and settings, and the Strobe Library provides over 100 pre-loaded strobe model configurations. The Gear Bag is readily accessible on all of the calculators, providing quick, easy and accurate exposure settings when swapping between your strobes. Only using one strobe? Keep multiple "set ups" in your Gear Bag under a variety of configurations: bare bulbed, gelled, soft-boxed, umbrellaed, neutral-density filtered, wall-bounced, go-bo'd. There is no limit to the number of ways the light from a single strobe can be modified. Create as many configurations for these light modifiers as you need, and know in an instant how to most effectively utilize them. KeyLight PRO. Control the light.

About

Cascable Studio

Control and automate your camera functions directly from your iPhone, iPad, or Mac. Transfer photos and videos, trigger the shutter remotely, and utilize built-in automation tools for timelapses and more. Compatible with over 250 camera models.

Highlights
  • Remote camera control
  • Automated timelapses
  • Exposure bracketing
  • Shutter remote control
  • Fast image downloading
  • RAW capture support
  • Unified interface
Features
Read full description

Cascable Studio can take a good camera and make it amazing by helping you control and automate its functions right from your iPhone, iPad, or Mac. You can even transfer your photos and videos from it, all from one app. Compatible with more than 250 different cameras* from the biggest manufacturers, Cascable Studio connects via WiFi and USB* for super-fast image importing and much more. Whether you're a photography master or an eager hobbyist, Cascable Studio is the app your camera has been missing. Features include: - Full control of your camera's exposure and other settings right from your iPhone, iPad, or Mac. - Trigger the remote shutter for your camera through the app, whether in a studio, out in the field, or for a group shot. - Support for timelapses, exposure bracketing, and more with built-in automation tools. - Apple Watch support for controlling your camera's shutter — perfect for capturing those group shots! - TV output via both AirPlay and HDMI, making it easier to share your photos with others. - Built-in calculators for exposure and other features – great for astrophotography and more. - Fast and easy downloading of full resolution images (including RAW**) directly to your iPhone or iPad. - RAW capture with ease**. - Powerful drag-and-drop automation for creating complex and unique timelapse sequences and so much more. - Support for flash drives and SSDs for more flexible media storage options. - A zero-tap backup option so you'll never lose a photo again. - A single, unified interface regardless of the camera you use — no more learning curves when you buy a new camera! --- * Available features vary depending on camera model and connection method. When using USB, Cascable can import images from any camera that supports the industry-standard PTP protocol, and can fully remote control and automate Canon EOS, GoPro, Nikon, and Sony cameras. When using WiFi, Cascable supports WiFi or Ethernet equipped cameras from the following model ranges: - Canon EOS, PowerShot and IXUS/ELPH, - Fujifilm X and Finepix, - GoPro HERO 9 Black and newer, - Nikon D, - Olympus OM-D, PEN, and SH, - Panasonic LUMIX, - Phase One IQ4 with the XT or XF camera system, - Sony Alpha, HX, RX, and NEX. ** Fujifilm, GoPro, IXUS/ELPH models and certain older Panasonic/PowerShot models don't support RAW image transfer. See the Cascable Studio website for details. --- Cascable Studio Pro is required to unlock some additional features. Cascable Studio Pro is available as a one-time purchase or subscription – whichever you prefer. If you choose to subscribe to Cascable Studio Pro the purchase will be charged to your App Store account. The subscription will automatically renew 24 hours before it runs out and you can manage it from User Settings in the App Store. Terms and Privacy Policy: http://cascable.se/privacy --- Canon, EOS, PowerShot, IXUS and ELPH are trademarks of Canon Inc. Fujifilm and Finepix are trademarks of FUJIFILM Corporation. GoPro, HERO and their respective logos are trademarks or registered trademarks of GoPro, Inc. Olympus, Olympus PEN, STYLUS and OM-D are trademarks of Olympus Corporation. Nikon is a trademark of Nikon Corporation. NEX, RX and α are trademarks of Sony Corporation. Uses the Camera Remote API by Sony.

Screenshots

KeyLight PRO4 screens
Cascable Studio4 screens

Verdict

The call

The clearest difference is price: Cascable Studio at Free against KeyLight PRO's $0.99. Cascable Studio also leads on update cadence (monthly vs every 26 months) and ratings volume (379 vs 4). KeyLight PRO's advantage is in-app purchases (none vs 8) and iOS requirement (10.0 vs 16.0). On 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

CostPrice · In-app purchases · Ads · Monetization

Cascable Studio is free to download; KeyLight PRO costs $0.99 up front. Cascable Studio sells 8 in-app purchases, starting at $7.99 per month. KeyLight PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.0 for KeyLight PRO against 4.0 for Cascable Studio. That said, the two scores are not equally well evidenced: Cascable Studio has 379 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 44% and 45% positive.

UpkeepUpdate frequency

KeyLight PRO ships an update every 26 months, Cascable Studio monthly. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

Scorecard7 real differences · 3 level
KeyLight PRO versus Cascable Studio: the parameters behind the verdict, then further details
ParameterKeyLight PROCascable Studio
Price$0.99Free — better
Rating4.0 (4 ratings)4.0 (379 ratings)
Positive reviews44.4% of reviews45.3% of reviews — better
Number of ratings4379 — better
Update frequencyEvery 26 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS10.0 — better16.0
Further details — not scored
Size3 MB90 MB
Age rating4+4+
DeveloperDaniel BrewerCascable AB

Customer experience

KeyLight PRO

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews9 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

Cascable Studio

All ratings379 ratings
Positive71.2%
Neutral10.0%
Negative18.7%
Written reviews212 reviews
Positive45.3%
Neutral15.6%
Negative39.2%

Bugs and requests

KeyLight PRO

Not enough reviews yet to summarise bugs or requests.

Cascable Studio

Reported bugs

4 issues
  • App crashes when connecting to camera
  • Camera settings not applying correctly
  • Unreliable shutter triggering
  • Geotagging issues in certain regions

Requested features

5 requests
  • Full-screen mode without overlays
  • Ability to rate/sort photos on camera
  • Support for more camera models
  • Improved video recording capabilities
  • Background operation for intervalometer

In-app purchases

None

KeyLight PRO

No in-app purchases

8 purchases

Cascable Studio

Subscriptions3
  • Cascable Pro (Monthly)$7.991 Month
  • Cascable Pro (Quarterly)$12.993 Months
  • Cascable Pro (Yearly)7 Days trial$49.991 Year
One-time5
  • Complete My Bundle$4.99
  • Complete My Bundle$14.99
  • Cascable 7 Pro Upgrade$29.99
Show 2 more
  • Cascable Pro (Legacy)$99.99
  • Cascable Pro (No Subscription)$99.99

Questions

Is KeyLight PRO free?
KeyLight PRO costs $0.99, with no in-app purchases.
Is Cascable Studio free?
Cascable Studio is free to download, with in-app purchases available.
Which has better reviews, KeyLight PRO or Cascable Studio?
KeyLight PRO and Cascable Studio are both rated 4.0 out of 5 on the App Store, from 4 and 379 ratings respectively.
Do KeyLight PRO or Cascable Studio have ads?
Neither KeyLight PRO nor Cascable Studio shows ads.
Which is updated more often, KeyLight PRO or Cascable Studio?
KeyLight PRO ships an update every 26 months, and Cascable Studio monthly. Most recently, KeyLight PRO was updated on September 23, 2026 and Cascable Studio on September 25, 2026.

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