Comparison

LightLAB PRO vs Digital Gel

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

Head to head
About

LightLAB PRO

This app provides professional lighting analysis tools for photographers, videographers, and lighting professionals. It measures various light parameters with high accuracy, including exposure, color temperature, and white point, and can scan light spectra.

Highlights
  • Measure lighting level
  • Calculate exposure level (EV)
  • Determine color temperature (Kelvin)
  • Measure aperture value (f stop)
  • Calculate exposure time
  • Scan light spectrum
  • Analyze light spectrum components and wavelengths
Features
Read full description

LightLAB PRO is the direct evolution of LuxMeterPro. this transformation makes LightLAB PRO a flexible, accurate and indispensable tool for those who need a device that offers professional features at a very low cost. LightLAB PRO finds its utility both in lighting applications and in the world of photographs and video makers. among the main features of course, in addition to measuring the lighting level of an environment, in this version, which is more improved with a very high accuracy, it allows to measure a whole series of parameters that make LightLAB PRO a unique instrument. The parameters calculated and made available to the user are: The exposure level expressed in EV, the color temperature in KELVIN, the aperture value in f stop, the exposure time in fractions of a second 1 / s and other parameters like the coordinates of the white point and more. All these values ​​are useful to those who work in photo-cinematography to correctly set the light sources so as to obtain the desired result quickly and without spending exaggerated sums to buy devices that do this work. in addition to the measurement of the parameters described above, it is also possible to customize some of them according to your needs. moreover it is possible to scan the light spectrum of the sources and evaluate with extreme accuracy the components and the wavelengths that make up the light that illuminates the scene. LightLAB PRO becomes a real light analysis laboratory providing all the necessary tools to get professional lighting without difficulty

About

Digital Gel

Features
Read full description

Digital Gel is a precision color tool for gaffers, DPs, and lighting programmers. Meter a fixture bare, then meter it again through a gel. Digital Gel captures the difference as a color ratio — a "digital gel" — that you can apply to any other light and read back as CIE x,y coordinates to enter on the console. WHAT IT DOES • Extract a gel from two spectrometer readings (bare + through the gel). • Apply that gel — or a stack of gels — to any target light. • Correct: work backwards and cancel a filter you can't take away. • Refine any result against a real meter reading until it lands. • Get the result as x,y for the console, plus CCT, tint (in CC and Δuv), and mired shift. • See everything on a CIE 1931 chromaticity diagram with the Planckian locus, color-temperature ticks, and optional Rec.709 / P3 / Rec.2020 gamut overlays. CANCEL WHAT YOU CAN'T REMOVE Not every filter is a choice — a tinted window, a diffusion frame, a practical's own glass. Meter your fixture with it in the way, and Correct solves for the x,y to set the fixture to so the light lands where you wanted it after the glass. It states the move in mired and CC as well, so the answer is just as usable if you reach for a CTB and minus green instead of the console — and it tells you when a filter is simply too strong to cancel. Saturated filters don't treat an LED fixture quite the way the math expects, so Correct flags them and lets you Refine: meter the result through the filter, enter the reading, and dial the next value. Refine learns how your fixture and filter actually respond, and closes in within a few passes. BUILT FOR THE SET • Enter light as x,y, as a color temperature (5600), or temperature with tint (3200 -2). • Save a library of gels and custom sources; mark favorites; search your list. • Calibrate a fixture that doesn't hit the color it's told to, so Apply's numbers land where you mean them. • Touch and hold any result to copy its x,y. • Choose CAT02 (recommended) or raw XYZ adaptation math. • A transmission read of each gel's red / green / blue balance at a glance. • Universal: one column on iPhone, two panes on iPad portrait, three in landscape. PRIVATE BY DESIGN No account to create, and no data collected. Your gel library syncs between your own devices through your private iCloud — nobody else can see it — and with iCloud switched off the app is entirely local. Digital Gel works in chromaticity, so it matches color points, not full spectra — when metamerism matters on set, trust your meter, and let Refine close the gap.

Screenshots

LightLAB PRO4 screens
Digital Gel4 screens

Verdict

The call

The clearest difference is update cadence: Digital Gel at every 3 weeks against LightLAB PRO's every 2 months. LightLAB PRO's advantage is iOS requirement (10.3 vs 17.0). On price, 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

LightLAB PRO costs $3.99 and Digital Gel $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

LightLAB PRO ships an update every 2 months, Digital Gel every 3 weeks. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
LightLAB PRO versus Digital Gel: the parameters behind the verdict, then further details
ParameterLightLAB PRODigital Gel
Price$3.99$3.99
Rating3.0 (2 ratings) — better—
Positive reviews8.6% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.3 — better17.0
Further details — not scored
Size33 MB2 MB
Age rating4+4+
DeveloperAM PowerSoftwareTIMO TAPIO HAAPASAARI

Bugs and requests

LightLAB PRO

Reported bugs

406 issues
  • ⚫️ Black screen on launch
  • 🐛 App crashes
  • 🐛 Freezes from time to time
  • 🐛 App closes immediately
  • 🐛 App crashes on launch
Show 401 more
  • 🐛 Rare to open without crashing
  • 🐛 Flashes and shuts off
  • 🐛 Crashes endlessly
  • 🐛 Immediately crashes
  • 🐛 Slow and not seeing cameras
  • 🐛 No improvement after delete/reinstall
  • 🐛 iOS 5.1 doesn't operate
  • 🐛 Light measurement abnormal
  • 🐛 Doesn't work since OS 5.1 update
  • 🐛 Camera cannot be changed
  • 🐛 No functions operate
  • 🐛 Missing instructions
  • 🐛 Bugs inside
  • 🐛 Cannot calibrate
  • 🐛 Switching lenses difficult
  • 🐛 Not as good as free version
  • 🐛 Interface loads, that's all
  • 🐛 Flashes iPad layout, switches to iPhone
  • 🐛 No function
  • 🐛 Doesn't calibrate on iPhone 4
  • 🐛 Support email bounced
  • 🐛 Inconsistent readings
  • 🐛 Almost useless
  • 🐛 App does not work
  • 🐛 Not working
  • 🐛 Very different readings
  • 🐛 Website no longer available
  • 🐛 LUX is erroneous
  • 🐛 Not a Lux meter
  • 🐛 Measures reflected light, not lux
  • 🐛 Inaccurate measurements
  • 🐛 Wish I could get money back
  • 🐛 Color temp is a joke
  • 🐛 Guesses are better
  • 🐛 Shows yellow HPS as 5300k
  • 🐛 CFL and incandescent same
  • 🐛 Faulty
  • 🐛 Don't have confidence in results
  • 🐛 Low lighting results way off
  • 🐛 Instructions would be nice
  • 🐛 Valid email address needed
  • 🐛 Cannot measure lux with camera
  • 🐛 Helper function leaves user alone
  • 🐛 Camera too intelligent
  • 🐛 White balance etc. shouldn't be in measurement
  • 🐛 Cannot get usable lux measurement
  • 🐛 Same for color temperature
  • 🐛 Not a Pro Advanced feature
  • 🐛 Requires user expertise
  • 🐛 Not worth the money
  • 🐛 Doesn't work on new iPad
  • 🐛 Reverts to iPhone size image
  • 🐛 Total failure on new iPad
  • 🐛 Surface and operation fine, no measurement
  • 🐛 Switch doesn't turn on
  • 🐛 Thrown away money
  • 🐛 Does not work on iPhone 4s
  • 🐛 Friend uses on iPhone 4 without problem
  • 🐛 Hope for quick update
  • 🐛 Screen dimensions cut off
  • 🐛 Results vary too much
  • 🐛 Data is useless
  • 🐛 Screen cut off on right/bottom
  • 🐛 Needs major revision
  • 🐛 All I get is a black screen
  • 🐛 Please get back to me
  • 🐛 Black screen, doesn't work
  • 🐛 Waste of money
  • 🐛 Worked good on 5, black screen on 6
  • 🐛 Difficult to use
  • 🐛 Need expert knowledge
  • 🐛 Still struggling to use
  • 🐛 Kelvin meter is doubtful
  • 🐛 Feels like analyzing image
  • 🐛 Completely worthless app
  • 🐛 Bears no relation to reality
  • 🐛 Written in illiterate English
  • 🐛 Functions unusable
  • 🐛 Why?
  • 🐛 Is there a way?
  • 🐛 Black screen on iPhone 5
  • 🐛 Doesn't work since iOS 6
  • 🐛 Black screen after launch
  • 🐛 Immediately black screen
  • 🐛 App closes immediately
  • 🐛 Expecting quick update
  • 🐛 Inconsistent readings
  • 🐛 Almost useless
  • 🐛 App does not work
  • 🐛 Not working
  • 🐛 Very different readings
  • 🐛 Website no longer available
  • 🐛 LUX is erroneous
  • 🐛 Not a Lux meter
  • 🐛 Measures reflected light, not lux
  • 🐛 Inaccurate measurements
  • 🐛 Wish I could get money back
  • 🐛 Color temp is a joke
  • 🐛 Guesses are better
  • 🐛 Shows yellow HPS as 5300k
  • 🐛 CFL and incandescent same
  • 🐛 Faulty
  • 🐛 Don't have confidence in results
  • 🐛 Low lighting results way off
  • 🐛 Instructions would be nice
  • 🐛 Valid email address needed
  • 🐛 Cannot measure lux with camera
  • 🐛 Helper function leaves user alone
  • 🐛 Camera too intelligent
  • 🐛 White balance etc. shouldn't be in measurement
  • 🐛 Cannot get usable lux measurement
  • 🐛 Same for color temperature
  • 🐛 Not a Pro Advanced feature
  • 🐛 Requires user expertise
  • 🐛 Not worth the money
  • 🐛 Doesn't work on new iPad
  • 🐛 Reverts to iPhone size image
  • 🐛 Total failure on new iPad
  • 🐛 Surface and operation fine, no measurement
  • 🐛 Switch doesn't turn on
  • 🐛 Thrown away money
  • 🐛 Slow and not seeing cameras
  • 🐛 No improvement after delete/reinstall
  • 🐛 iOS 5.1 doesn't operate
  • 🐛 Light measurement abnormal
  • 🐛 Doesn't work since OS 5.1 update
  • 🐛 Camera cannot be changed
  • 🐛 No functions operate
  • 🐛 Please fix
  • 🐛 Missing instructions
  • 🐛 Bugs inside
  • 🐛 Cannot calibrate
  • 🐛 Switching lenses difficult
  • 🐛 Not as good as free version
  • 🐛 Interface loads, that's all
  • 🐛 Don't download it
  • 🐛 Do not buy this app
  • 🐛 Does not work for lux or color temp
  • 🐛 Cannot calibrate
  • 🐛 Not linear
  • 🐛 Color temp not close
  • 🐛 Save your money
  • 🐛 500k increments too large
  • 🐛 Not usable for shooting
  • 🐛 Approximate calibration
  • 🐛 No parameter saving
  • 🐛 Color temperature scale not useful
  • 🐛 No support
  • 🐛 No instructions available
  • 🐛 No part works accurately
  • 🐛 Product blows
  • 🐛 100% true on iPhone 4
  • 🐛 Fix this app
  • 🐛 Dishonest chiselers
  • 🐛 Does not work at all
  • 🐛 Company sells many similar apps
  • 🐛 Bought two, neither work
  • 🐛 Please fix or refund
  • 🐛 Not suitable for iPad
  • 🐛 Image appears tiny
  • 🐛 In one corner of the screen
  • 🐛 Could not get it to work
  • 🐛 Flashes iPad layout, switches to iPhone
  • 🐛 No function
  • 🐛 Annoying
  • 🐛 Too expensive
  • 🐛 No interaction with internal camera
  • 🐛 No way to measure anything
  • 🐛 Several versions of this crap
  • 🐛 Developer's intentions?
  • 🐛 Does not work on iPhone 4s
  • 🐛 Friend uses on iPhone 4 without problem
  • 🐛 Hope for quick update
  • 🐛 Screen dimensions cut off
  • 🐛 Results vary too much
  • 🐛 Data is useless
  • 🐛 Screen cut off on right/bottom
  • 🐛 Needs major revision
  • 🐛 All I get is a black screen
  • 🐛 Please get back to me
  • 🐛 Black screen, doesn't work
  • 🐛 Waste of money
  • 🐛 Worked good on 5, black screen on 6
  • 🐛 Difficult to use
  • 🐛 Need expert knowledge
  • 🐛 Still struggling to use
  • 🐛 Kelvin meter is doubtful
  • 🐛 Feels like analyzing image
  • 🐛 Completely worthless app
  • 🐛 Bears no relation to reality
  • 🐛 Written in illiterate English
  • 🐛 Functions unusable
  • 🐛 Why?
  • 🐛 Is there a way?
  • 🐛 Black screen on iPhone 5
  • 🐛 Doesn't work since iOS 6
  • 🐛 Black screen after launch
  • 🐛 Immediately black screen
  • 🐛 App closes immediately
  • 🐛 Expecting quick update
  • 🐛 Inconsistent readings
  • 🐛 Almost useless
  • 🐛 App does not work
  • 🐛 Not working
  • 🐛 Very different readings
  • 🐛 Website no longer available
  • 🐛 LUX is erroneous
  • 🐛 Not a Lux meter
  • 🐛 Measures reflected light, not lux
  • 🐛 Inaccurate measurements
  • 🐛 Wish I could get money back
  • 🐛 Color temp is a joke
  • 🐛 Guesses are better
  • 🐛 Shows yellow HPS as 5300k
  • 🐛 CFL and incandescent same
  • 🐛 Faulty
  • 🐛 Don't have confidence in results
  • 🐛 Low lighting results way off
  • 🐛 Instructions would be nice
  • 🐛 Valid email address needed
  • 🐛 Cannot measure lux with camera
  • 🐛 Helper function leaves user alone
  • 🐛 Camera too intelligent
  • 🐛 White balance etc. shouldn't be in measurement
  • 🐛 Cannot get usable lux measurement
  • 🐛 Same for color temperature
  • 🐛 Not a Pro Advanced feature
  • 🐛 Requires user expertise
  • 🐛 Not worth the money
  • 🐛 Doesn't work on new iPad
  • 🐛 Reverts to iPhone size image
  • 🐛 Total failure on new iPad
  • 🐛 Surface and operation fine, no measurement
  • 🐛 Switch doesn't turn on
  • 🐛 Thrown away money
  • 🐛 Slow and not seeing cameras
  • 🐛 No improvement after delete/reinstall
  • 🐛 iOS 5.1 doesn't operate
  • 🐛 Light measurement abnormal
  • 🐛 Doesn't work since OS 5.1 update
  • 🐛 Camera cannot be changed
  • 🐛 No functions operate
  • 🐛 Please fix
  • 🐛 Missing instructions
  • 🐛 Bugs inside
  • 🐛 Cannot calibrate
  • 🐛 Switching lenses difficult
  • 🐛 Not as good as free version
  • 🐛 Interface loads, that's all
  • 🐛 Don't download it
  • 🐛 Do not buy this app
  • 🐛 Does not work for lux or color temp
  • 🐛 Cannot calibrate
  • 🐛 Not linear
  • 🐛 Color temp not close
  • 🐛 Save your money
  • 🐛 500k increments too large
  • 🐛 Not usable for shooting
  • 🐛 Approximate calibration
  • 🐛 No parameter saving
  • 🐛 Color temperature scale not useful
  • 🐛 No support
  • 🐛 No instructions available
  • 🐛 No part works accurately
  • 🐛 Product blows
  • 🐛 100% true on iPhone 4
  • 🐛 Fix this app
  • 🐛 Dishonest chiselers
  • 🐛 Does not work at all
  • 🐛 Company sells many similar apps
  • 🐛 Bought two, neither work
  • 🐛 Please fix or refund
  • 🐛 Not suitable for iPad
  • 🐛 Image appears tiny
  • 🐛 In one corner of the screen
  • 🐛 Could not get it to work
  • 🐛 Flashes iPad layout, switches to iPhone
  • 🐛 No function
  • 🐛 Annoying
  • 🐛 Too expensive
  • 🐛 No interaction with internal camera
  • 🐛 No way to measure anything
  • 🐛 Several versions of this crap
  • 🐛 Developer's intentions?
  • 🐛 Does not work on iPhone 4s
  • 🐛 Friend uses on iPhone 4 without problem
  • 🐛 Hope for quick update
  • 🐛 Screen dimensions cut off
  • 🐛 Results vary too much
  • 🐛 Data is useless
  • 🐛 Screen cut off on right/bottom
  • 🐛 Needs major revision
  • 🐛 All I get is a black screen
  • 🐛 Please get back to me
  • 🐛 Black screen, doesn't work
  • 🐛 Waste of money
  • 🐛 Worked good on 5, black screen on 6
  • 🐛 Difficult to use
  • 🐛 Need expert knowledge
  • 🐛 Still struggling to use
  • 🐛 Kelvin meter is doubtful
  • 🐛 Feels like analyzing image
  • 🐛 Completely worthless app
  • 🐛 Bears no relation to reality
  • 🐛 Written in illiterate English
  • 🐛 Functions unusable
  • 🐛 Why?
  • 🐛 Is there a way?
  • 🐛 Black screen on iPhone 5
  • 🐛 Doesn't work since iOS 6
  • 🐛 Black screen after launch
  • 🐛 Immediately black screen
  • 🐛 App closes immediately
  • 🐛 Expecting quick update
  • 🐛 Inconsistent readings
  • 🐛 Almost useless
  • 🐛 App does not work
  • 🐛 Not working
  • 🐛 Very different readings
  • 🐛 Website no longer available
  • 🐛 LUX is erroneous
  • 🐛 Not a Lux meter
  • 🐛 Measures reflected light, not lux
  • 🐛 Inaccurate measurements
  • 🐛 Wish I could get money back
  • 🐛 Color temp is a joke
  • 🐛 Guesses are better
  • 🐛 Shows yellow HPS as 5300k
  • 🐛 CFL and incandescent same
  • 🐛 Faulty
  • 🐛 Don't have confidence in results
  • 🐛 Low lighting results way off
  • 🐛 Instructions would be nice
  • 🐛 Valid email address needed
  • 🐛 Cannot measure lux with camera
  • 🐛 Helper function leaves user alone
  • 🐛 Camera too intelligent
  • 🐛 White balance etc. shouldn't be in measurement
  • 🐛 Cannot get usable lux measurement
  • 🐛 Same for color temperature
  • 🐛 Not a Pro Advanced feature
  • 🐛 Requires user expertise
  • 🐛 Not worth the money
  • 🐛 Doesn't work on new iPad
  • 🐛 Reverts to iPhone size image
  • 🐛 Total failure on new iPad
  • 🐛 Surface and operation fine, no measurement
  • 🐛 Switch doesn't turn on
  • 🐛 Thrown away money
  • 🐛 Slow and not seeing cameras
  • 🐛 No improvement after delete/reinstall
  • 🐛 iOS 5.1 doesn't operate
  • 🐛 Light measurement abnormal
  • 🐛 Doesn't work since OS 5.1 update
  • 🐛 Camera cannot be changed
  • 🐛 No functions operate
  • 🐛 Please fix
  • 🐛 Missing instructions
  • 🐛 Bugs inside
  • 🐛 Cannot calibrate
  • 🐛 Switching lenses difficult
  • 🐛 Not as good as free version
  • 🐛 Interface loads, that's all
  • 🐛 Don't download it
  • 🐛 Do not buy this app
  • 🐛 Does not work for lux or color temp
  • 🐛 Cannot calibrate
  • 🐛 Not linear
  • 🐛 Color temp not close
  • 🐛 Save your money
  • 🐛 500k increments too large
  • 🐛 Not usable for shooting
  • 🐛 Approximate calibration
  • 🐛 No parameter saving
  • 🐛 Color temperature scale not useful
  • 🐛 No support
  • 🐛 No instructions available
  • 🐛 No part works accurately
  • 🐛 Product blows
  • 🐛 100% true on iPhone 4
  • 🐛 Fix this app
  • 🐛 Dishonest chiselers
  • 🐛 Does not work at all
  • 🐛 Company sells many similar apps
  • 🐛 Bought two, neither work
  • 🐛 Please fix or refund
  • 🐛 Not suitable for iPad
  • 🐛 Image appears tiny
  • 🐛 In one corner of the screen
  • 🐛 Could not get it to work
  • 🐛 Flashes iPad layout, switches to iPhone
  • 🐛 No function
  • 🐛 Annoying
  • 🐛 Too expensive
  • 🐛 No interaction with internal camera
  • 🐛 No way to measure anything
  • 🐛 Several versions of this crap
  • 🐛 Developer's intentions?
  • 🐛 Does not work on iPhone 4s
  • 🐛 Friend uses on iPhone 4 without problem
  • 🐛 Hope for quick update

Requested features

39 requests
  • 💡 Circle in the middle for measurement
  • 💡 Changeable circle size
  • 💡 More detailed calibration instructions
  • 💡 Ability to add own light sources
  • 💡 Dark mode option
Show 34 more
  • 💡 Advanced analytics dashboard
  • 💡 Update for iOS 5.1
  • 💡 Fix for iPhone 4s
  • 💡 Fix for iPad 2
  • 💡 Fix for iPhone 4
  • 💡 Fix for iPhone 6
  • 💡 Fix for iPhone 6 Plus
  • 💡 Fix for iPhone 6s
  • 💡 Fix for iPhone 6s Plus
  • 💡 Fix for iPad Air
  • 💡 Fix for iOS 7
  • 💡 Fix for iOS 8.02
  • 💡 Fix for iOS 10
  • 💡 Fix for iOS 6
  • 💡 Fix for iOS 6.0.1
  • 💡 Fix for iOS 5.1
  • 💡 Fix for iOS 4.21
  • 💡 Fix for iPad
  • 💡 Fix for iPad 2
  • 💡 Fix for iPhone 5
  • 💡 Fix for iPhone 5s
  • 💡 Fix for iPhone 4s
  • 💡 Fix for iPhone 4
  • 💡 Fix for iPhone 3GS
  • 💡 Fix for iPhone
  • 💡 Fix for all devices
  • 💡 More detailed documentation
  • 💡 Clearer instructions
  • 💡 Better GUI
  • 💡 Step-by-step calibration guide
  • 💡 Explanation of compensation, linear, offset
  • 💡 Ability to save settings
  • 💡 More precise color temperature measurement
  • 💡 Ability to change camera

Digital Gel

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LightLAB PRO

No in-app purchases

None

Digital Gel

No in-app purchases

Questions

Is LightLAB PRO free?
LightLAB PRO costs $3.99, with no in-app purchases.
Is Digital Gel free?
Digital Gel costs $3.99, with no in-app purchases.
Do LightLAB PRO or Digital Gel have ads?
Neither LightLAB PRO nor Digital Gel shows ads.
Which is updated more often, LightLAB PRO or Digital Gel?
LightLAB PRO ships an update every 2 months, and Digital Gel every 3 weeks. Most recently, LightLAB PRO was updated on October 11, 2026 and Digital Gel on October 5, 2026.

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