Comparison

Kessler kOS for CineDrive vs DigiSlate

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

Head to head
About

Kessler kOS for CineDrive

This application provides advanced motion control for professional camera systems. It enables precise control over camera movements, keyframing, and time-lapse sequences for cinematic productions. Connect wirelessly to your system for seamless operation and repeatable shots.

Highlights
  • Live, looping, stop-motion, time-lapse moves
  • Digital keyframing for repeatable moves
  • WiFi connectivity to CineDrive
  • Editable keyframes with curve smoothing
  • Scheduled move execution by date/time
  • Event mode for live events and actor marks
  • GigaPixel image compilation
Features
Read full description

The Kessler kOS™ app for CineDrive on iPad is Kessler’s premium motion control software for operating Kessler’s CineDrive motion control system. Specifically, kOS™ communicates motion control commands and data to the CineDrive™ Brain. kOS™ for iPad runs on any iPad device with iOS 10.0 or later. CONTROL ANY MOTION Live, looping, stop-motion, time-lapse, GigaPixel and event mode moves are at your fingertips. DIGITAL KEY FRAMING Simply move each axis into position and hit record. kOS remembers exact positioning for 100% repeatable moves. WIFI CONNECTIVITY CineDrive creates its own WiFi network that you can connect your device to instantly. EASY KEY FRAME SMOOTHING Add & manipulate curves to your moves for ease in and ease outs. Also, link each side of the key frame to match. EDITABLE KEY FRAMES No need to re-record the move if it's not exactly what you want. Edit one or all axes and key frames into the perfect position. Featuring incremental, exact motor position and tap & move key frame adjustments. REPEATABILITY Repeat the exact same move over and over again. Even change the duration to have the same move played out in different lengths of time. Want a move where the shot transitions from a live plate to a time-lapse? No problem. Simply repeat the move as a live shot and as a time lapse to blend together in post. DELAY BY DATE/TIME Not going to be around when your move needs to start? No problem. Easily set a date/time or fixed amount of time to have your move begin. kOS takes care of the rest. FLASH MARK/BLOOP Sync up your moves easily via the built-in flash marks with adjustable delay. Currently, there are five types of flash marks available: Brain LED, Flashlight, Audible Tone, Flash Screen (device), Software Clap (device). Choose one or choose all. PRE & POST PHOTOS (TIME-LAPSE) Easily add photos to your move before the move begins and after the move ends. GO TO POSITION Set minimum and maximum ranges on each axis (ie. slider 0" to 32") and go to any position by entering a value. LOAD & GO This feature allows for pre-loading a move so that you are able to start instantly whenever you are ready. CAMERA ROLL Trigger your camera to start recording any amount of time before the move begins and when to stop after the move ends. ANALOG CONTROL PANEL Manually control several axes live with the built in analog controller. EVENT MODE Event mode is mainly intended for live events or scenarios where exact position recalling on-the-fly is needed. For example, if you are filming a live concert, you can have different positions on stage saved. You can move easily from the drummer, to the guitarist, to the lead singer and so forth. This mode is also great for repeatedly hitting actor marks on set. GIGAPIXEL GigaPixel is traditionally used for 360 degree virtual tours, panoramic photographs or GigaPixel images which are extremely high resolution photographs that are compiled of many lower resolution photographs. GRAPH EXPANSION Expand the graph with one touch when precise key framing is needed. SCRUB THROUGH MOVE Need to edit a key frame or see when the camera will be in a certain position? Use the scrub feature to instantly move to a desired position. LOOPING Looping is made easy with kOS. Simply select one-time or continuous along with the type of reverse to first key frame method. CAMERA CONTROL Set CineDrive to trigger or control your camera’s exposure time within kOS. AUTO TIME-LAPSE CALCULATION Enter your desired clip length and frame rate and kOS will calculate the run time needed. BUMP BUTTONS Move in very small increments to ensure a precise position is on point. DROPBOX INTEGRATION Upload saved moves directly to your Dropbox account within kOS app. MOTOR CONFIGURATION Each axis is able to be customized. For example: axis name, run speed, dampening, smooth curves and bump button adjustment values.

About

DigiSlate

This app provides a free digital clapperboard for video production, offering full-screen display and customizable slate details. It allows for easy syncing with swipe or volume button claps and includes advanced features like music mode and timecode support.

Highlights
  • Full screen clapper board
  • Music Mode (in-app purchase)
  • Editable slate titles
  • Save and load slates
  • Swipe or volume button clap
  • Auto take increment
  • Multiple sync sounds
Features
Read full description

DigiSlate is a modern, free digital slate / clapperboard for iPad, iPhone and iPod Touch. DigiSlate uses either a swipe across the board or the volume buttons on your device to clap the board. This allows you to keep your hands well out of the way when the slate claps. DigiSlate uses the whole screen for the clappers for easier sync on smaller devices. Features - Full screen clapper board - works great on smaller phones for easier sync in post - Music Mode (in-app purchase) syncs music from your local library or right from your inbox and changes speed in real-time! - Counts in frames and supports regular and drop frame timecodes... or enter your own - Edit every title on the slate to fully customise DigiSlate to work best for you - Save and Load Slates - re-entering details for different shoots is history - Swipe across or use the volume buttons to clap the board - Double tap the text on the board to edit the slate - Drag up and down (or double tap) on Slate, Roll, Scene, Take, FPS and Camera to change - Two finger drag up and down on Scene for USA format (4A, $B, 4C etc) - Date and Time come straight from your device so no need to enter manually - Take will go green to indicate that the board has been clapped, and can auto-increment - Choose either a traditional black slate or white clapperboard - Time of day, shoot time (to 1/100th second) for reference or Scene Name L.E.D. style display. Now shows Shoot Timecode as well. - 4 different sounds for sync - Clap, Beep (1kHz tone), White Noise or Pip (1 frame 1khz tone for SyncOne2 and Multi-Camera sync checking - Sync Mode run flash/beep cycle for Multi-Cam shoots or general audio video sync checking - Auto Take auto-increments the Take each clap the board - Triple Clap option to clap the slate 3 times for easier sync in noisy environments No more fiddling around with small on-screen buttons or awkward user interfaces - DigiSlate is easy to use even on the smaller display of an iPhone/iPod Touch and looks fantastic on the larger screen of your iPad and simply stunning on the iPad Pro. DigiSlate is the free digital clapperboard you've been waiting for.

Verdict

The call

The clearest difference is rating: Kessler kOS for CineDrive at 5.0 against DigiSlate's 3.9. Kessler kOS for CineDrive also leads on in-app purchases (none vs 2) and review sentiment (100% vs 74%). DigiSlate's advantage is update cadence (monthly vs every 3 months) and ratings volume (48 vs 3). On price, ads 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. DigiSlate sells 2 one-off in-app purchases. Kessler kOS for CineDrive asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kessler kOS for CineDrive holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: DigiSlate has 48 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Kessler kOS for CineDrive's written reviews are positive against 74% of DigiSlate's.

UpkeepUpdate frequency

Kessler kOS for CineDrive ships an update every 3 months, DigiSlate monthly. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

Scorecard7 real differences · 3 level
Kessler kOS for CineDrive versus DigiSlate: the parameters behind the verdict, then further details
ParameterKessler kOS for CineDriveDigiSlate
PriceFreeFree
Rating5.0 (3 ratings) — better3.9 (48 ratings)
Positive reviews100.0% of reviews — better74.0% of reviews
Number of ratings348 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size40 MB7 MB
Age rating4+4+
DeveloperKessler Crane Inc.Wimbledon Sound

Customer experience

Kessler kOS for CineDrive

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DigiSlate

All ratings48 ratings
Positive68.8%
Neutral8.3%
Negative22.9%
Written reviews77 reviews
Positive74.0%
Neutral6.5%
Negative19.5%

Bugs and requests

Kessler kOS for CineDrive

Not enough reviews yet to summarise bugs or requests.

DigiSlate

Reported bugs

14 issues
  • Cannot change date and time
  • Frame numbers do not correspond to frame rate
  • Clap and sound off by a few frames
  • Renaming titles/notes not consistent
  • Project/slate saving and deletion issues
Show 9 more
  • Create new project button greys out
  • App inserts space in filenames
  • Paid for ad-free but still have ads
  • Cannot restore purchases
  • App makes no sound
  • Ads pop up and make app unusable
  • App ignores volume settings, plays at max volume
  • Date is wrong and cannot be set
  • App is upside down and won't rotate

Requested features

20 requests
  • Increase clap volume
  • Allow clap visual to remain on screen longer
  • Add iCloud integration for syncing slates
  • Option for 12-hour time format
  • Bluetooth sync for camera (BMPCC4K)
Show 15 more
  • Ability to edit field titles (Slate, Roll, Scene, Take)
  • Option to turn off clap via volume button
  • Display music cue timecode before clap
  • Add explanation for center section modes
  • Cycle backwards through center modes or use icons
  • See seconds from system time
  • Option to use frames instead of hundredths of a second for timecode
  • Auto-increment takes and scenes
  • Ability to edit slates/add new slates
  • Different font for main red section
  • Display other languages
  • Use flash for syncing
  • Sharper clap sound (like dog clicker)
  • Internal memory of clapped slates for camera report sheets
  • Sync via Bluetooth for camera

In-app purchases

None

Kessler kOS for CineDrive

No in-app purchases

2 purchases

DigiSlate

One-time2
  • Remove Ads$3.99
  • Music Mode$7.99

Questions

Is Kessler kOS for CineDrive free?
Kessler kOS for CineDrive is free to download, with no in-app purchases.
Is DigiSlate free?
DigiSlate is free to download, with in-app purchases available.
Which has better reviews, Kessler kOS for CineDrive or DigiSlate?
Kessler kOS for CineDrive is rated higher. Kessler kOS for CineDrive averages 5.0 out of 5 from 3 ratings, while DigiSlate averages 3.9 from 48 ratings.
Do Kessler kOS for CineDrive or DigiSlate have ads?
Neither Kessler kOS for CineDrive nor DigiSlate shows ads.
Which is updated more often, Kessler kOS for CineDrive or DigiSlate?
Kessler kOS for CineDrive ships an update every 3 months, and DigiSlate monthly. Most recently, Kessler kOS for CineDrive was updated on October 3, 2026 and DigiSlate on October 15, 2026.

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