Comparison

Focus Chart vs ARRI ECS

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

ARRI ECS

Features
Read full description

The “ECS Sync” iPhone app functions as a direct communication platform between ARRI and users of ARRI’s Electronic Control System (ECS). Adaptable to any camera and any lens, ARRI ECS tools include wireless hand units and digital controllers, intelligent lens motors, and distance measurers. With the ECS Sync app, users can receive up-to-the-minute software updates, news, and answers to frequently asked questions relevant to these products. In addition, the ECS Sync app enables Bluetooth file sharing between ECS devices and the app via the new Hi-5 hand unit, without the need of a bulky laptop on set. Software versions can be synchronized, and transferred from the app to the connected devices. Lens files and user settings can be archived in the app, or forwarded on, including to the user’s Google Drive or Drop Box. Lens files can also be displayed graphically, contributing to the app’s usefulness as a portable and intuitive filmmaking tool. Features: • Save and load lens tables and user setup files to/from the Hi-5 hand unit via Bluetooth • Create a personalized lens data archive in the ECS Sync app • Update the Hi-5 hand unit and connected LBUS devices via the app • Get the latest news about ARRI ECS products • Distribute lens tables and user setup files from the app via email, WhatsApp, Dropbox, Google Drive and more

Screenshots

Focus Chart3 screens
ARRI ECS3 screens

Verdict

The call

The clearest difference is iOS requirement: Focus Chart at 12.0 against ARRI ECS's 15.6. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Focus Chart ships an update every 16 months, ARRI ECS every 14 months. The most recent releases landed on October 4, 2026 and September 19, 2026 respectively.

Scorecard1 real difference · 9 level
Focus Chart versus ARRI ECS: the parameters behind the verdict, then further details
ParameterFocus ChartARRI ECS
PriceFreeFree
Rating4.4 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 16 monthsEvery 14 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size44 MB23 MB
Age rating4+4+
DeveloperCadrage GmbHARRI Group

In-app purchases

None

Focus Chart

No in-app purchases

None

ARRI ECS

No in-app purchases

Questions

Is Focus Chart free?
Focus Chart is free to download, with no in-app purchases.
Is ARRI ECS free?
ARRI ECS is free to download, with no in-app purchases.
Do Focus Chart or ARRI ECS have ads?
Neither Focus Chart nor ARRI ECS shows ads.
Which is updated more often, Focus Chart or ARRI ECS?
Focus Chart ships an update every 16 months, and ARRI ECS every 14 months. Most recently, Focus Chart was updated on October 4, 2026 and ARRI ECS on September 19, 2026.

Other comparisons