Comparison

Focus Chart vs LensKit

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

Head to head
About

Focus Chart

This tool displays focus charts with a siemens star to assist with camera lens adjustments and testing. It keeps your device awake during critical focus calibration, offering two distinct charts for easy switching.

Highlights
  • Two focus charts with siemens star
  • Prevents device standby
  • Back focus adjustment
  • Lens testing
  • Swipe left/right for chart switching
Features
Read full description

This app displays two different focus charts with a siemens star. It prevents the phone from going to stand-by while you're adjusting the back focus of your camera or testing your lenses. Swipe left and right two switch between the two charts. It's a simple yet effective tool for cinematographers, photographers and camera assistants.

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

Focus Chart3 screens
LensKit4 screens

Verdict

The call

The clearest difference is in-app purchases: Focus Chart at none against LensKit's 3. Focus Chart also leads on review sentiment (100% vs 70%) and iOS requirement (12.0 vs 15.0). LensKit's advantage is rating (4.9 vs 4.4) and update cadence (every 2 months vs every 16 months). On price, 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

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

ReceptionRating · Positive reviews · Number of ratings

LensKit holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: LensKit has 56 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 100% of Focus Chart's written reviews are positive against 70% of LensKit's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Focus Chart ships an update every 16 months, LensKit every 2 months. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

Scorecard7 real differences · 3 level
Focus Chart versus LensKit: the parameters behind the verdict, then further details
ParameterFocus ChartLensKit
PriceFreeFree
Rating4.4 (9 ratings)4.9 (56 ratings) — better
Positive reviews100.0% of reviews — better70.0% of reviews
Number of ratings956 — better
Update frequencyEvery 16 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size44 MB165 MB
Age rating4+4+
DeveloperCadrage GmbHZak Ray

Customer experience

Focus Chart

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

LensKit

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

In-app purchases

None

Focus Chart

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 Focus Chart free?
Focus Chart 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, Focus Chart or LensKit?
LensKit is rated higher. Focus Chart averages 4.4 out of 5 from 9 ratings, while LensKit averages 4.9 from 56 ratings.
Do Focus Chart or LensKit have ads?
Neither Focus Chart nor LensKit shows ads.
Which is updated more often, Focus Chart or LensKit?
Focus Chart ships an update every 16 months, and LensKit every 2 months. Most recently, Focus Chart was updated on October 21, 2026 and LensKit on October 8, 2026.

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