Comparison

RED Tools vs LensKit

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

Head to head
About

RED Tools

This app assists filmmakers and camera operators with camera setup by providing tools for crop factor, recording time, flicker-free video, depth of field, panning speed, and exposure. It offers customizable settings for various shooting situations and RED camera systems.

Highlights
  • Crop factor preview
  • R3D recording time evaluation
  • Flicker-free video calculation
  • Depth of field estimation
  • Panning speed guidance
  • Exposure assistance
Features
Read full description

RED Tools is a convenient reference tool designed for use by filmmakers and camera operators to outline best practices in camera set-up for a variety of shooting situations. Each tool is customizable based on a selected RED camera and sensor type. Standard film formats are also included for comparison. RED Tools is also included in the RED Control app, which also provides free, full-featured camera control and video streaming for RED’s latest DSMC3 products. TOOLS INCLUDED: CROP FACTOR Preview how a given focal length will appear depending on resolution setting and sensor type. Illustration depicts viewable area relative to a traditional 35 mm stills photography sensor by default, but other reference sensors are selectable within the drop-down menu. R3D RECORDING TIME Evaluate the video data rate and available recording time based on your RED camera settings. This can help you understand media requirements and production costs in advance of a shoot. FLICKER FREE VIDEO Find a flicker-free shutter speed and frame rate combination when shooting under artificial lighting. DEPTH OF FIELD Understand how various camera settings influence depth of field. PANNING SPEED Estimate the panning speed where judder will likely become too pronounced. The goal is to provide a more accessible tool than the charts and tables commonly referenced in cinematography manuals. It uses the standard rule of thumb that camera panning should not cause objects to transit the entire horizontal extent of an image in any less than seven seconds. EXPOSURE Assist with exposure when one camera setting has to change. Example usage scenarios include when a higher frame rate needs to be used for slow motion, when the T-stop has to change for depth of field, or when the shutter angle has to change to minimize flickering in artificial light. NIKKOR Z Lens Coverage Use this tool to understand how NIKKOR Z lenses will look on your RED Z Mount camera bodies. The tool shows the extent the light will fall off at different sensor formats, and if any hard vignetting occurs.

About

LensKit

This app provides professional tools for filmmakers and cinematographers, offering extensive lens specifications, camera coverage simulations, and advanced depth of field calculations. It helps plan shoots, make on-set decisions, and ensure compatibility with various cameras and lenses, including Netflix-approved formats.

Highlights
  • Extensive lens database (2000+ lenses)
  • Camera sensor coverage simulation
  • Lens matching for various configurations
  • Depth of field calculator
  • Shot preview and framing simulation
  • Netflix 4K mandate compliance tool
Features
Read full description

Whether you’re planning a shoot or making decisions on set, LensKit has you covered. Search over 2000 lenses from Angenieux, Arri, Cooke, Hawk, Leica, Zeiss and more. All specs and data sourced by hand: no AI means no hallucinations. SPECS Includes max aperture, lens mounts, weight, length, close focus, front diameter and more* COVERAGE Overlay a lens’ image circle on your camera sensor to make sure it’s covered. Includes over 200 cameras from Arri, Canon, Red, Sony, Blackmagic, Panasonic and more* LENS MATCH Mix and match spherical, anamorphic, speed boosters and extenders, and even factor in post-production extractions— the lens match tool can handle it all. EQUIVALENT No need to worry about crop factors or sensor sizes, just choose a focal length and a camera and get the Super35 equivalent. Or pick the S35 equivalent length you want and see the lens you’ll need. NETFLIX APPROVAL A game changer for anyone who’s struggled with the complexity of which formats and resolutions meet the Netflix "4K mandate"— especially when shooting in anamorphic. Designed in collaboration with Netflix. DEPTH OF FIELD An easy to use yet comprehensive DOF tool that allows for customizing circle of confusion with presets and manual input. PREVIEW See a simulation of your shot based on lens, camera and distance. Or pinch, zoom and reposition to get the exact frame you want, and see what lens or distance you’ll need for it. AND MORE Filter lenses to see only what fits your specific camera and needs. Save your calculations and return to them later. Group together lenses you rent or own for quick access. • Support • For support, send me an email at zak@grayhourmedia.com or message me on Instagram @_zakray. To see all supported cameras and lenses, just install the app (it's free to download!) and open the main dropdown menu. No internet connection required: all data is hard-coded into the app, so there’s no syncing process, and you’ll be able to access it even without a cell signal. • Disclaimer • The "price" feature uses affiliate links from B&H Photo Video. I receive a commission if you make a purchase from one of these links. • About • LensKit is developed by Zak Ray and the team at Gray Hour Media in NYC & LA. Gray Hour produces fresh and original content for film, episodic and the web. Head to www.grayhourmedia.com to check out our work! *Every lens in this app has complete specs, with the exception of some Panavision lenses. We’ve chosen to include these incomplete lenses in the app because of Panavision's importance in the industry. Additionally, while the large majority of lenses have exact image circle data, some—especially some vintage lenses—list only generic format coverage (e.g. Super35, Full Frame, etc) EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

RED Tools4 screens
LensKit4 screens

Verdict

The call

The clearest difference is rating: LensKit at 4.9 against RED Tools's 3.3. LensKit also leads on update cadence (every 2 months vs every 21 months) and review sentiment (70% vs 50%). RED Tools's advantage is in-app purchases (none vs 3). On price, ads, device support and iOS requirement 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

Both are free to download. LensKit sells 3 in-app purchases, starting at $4.99 per month. RED Tools asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LensKit holds the better App Store score, 4.9 against 3.3. Both are backed by a comparable volume of ratings — 15 and 56 respectively. Written reviews point the same way: 50% of RED Tools's written reviews are positive against 70% of LensKit's.

UpkeepUpdate frequency

RED Tools ships an update every 21 months, LensKit every 2 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
RED Tools versus LensKit: the parameters behind the verdict, then further details
ParameterRED ToolsLensKit
PriceFreeFree
Rating3.3 (15 ratings)4.9 (56 ratings) — better
Positive reviews50.0% of reviews70.0% of reviews — better
Number of ratings1556 — better
Update frequencyEvery 21 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size7 MB165 MB
Age rating4+4+
DeveloperRED Digital CinemaZak Ray

Customer experience

RED Tools

All ratings13 ratings
Positive53.8%
Neutral7.7%
Negative38.5%
Written reviews18 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

LensKit

All ratings56 ratings
Positive96.4%
Neutral3.6%
Negative0.0%
Written reviews10 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

In-app purchases

None

RED Tools

No in-app purchases

3 purchases

LensKit

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Annual Subscription$49.991 Year
One-time1
  • Lifetime Access$99.99

Questions

Is RED Tools free?
RED Tools is free to download, with no in-app purchases.
Is LensKit free?
LensKit is free to download, with in-app purchases available.
Which has better reviews, RED Tools or LensKit?
LensKit is rated higher. RED Tools averages 3.3 out of 5 from 15 ratings, while LensKit averages 4.9 from 56 ratings.
Do RED Tools or LensKit have ads?
Neither RED Tools nor LensKit shows ads.
Which is updated more often, RED Tools or LensKit?
RED Tools ships an update every 21 months, and LensKit every 2 months. Most recently, RED Tools was updated on October 6, 2026 and LensKit on October 8, 2026.

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