Comparison

Chronocurl vs DCO Central

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

Head to head
About

Chronocurl

This app provides a laser stopwatch system to help curling players analyze and improve their rock delivery. It quantifies linear speed, rotation, and direction, offering detailed feedback for enhanced consistency and performance.

Highlights
  • Laser stopwatch system
  • Quantifies linear speed
  • Measures rotation speed
  • Analyzes delivery direction
  • Speed data in multiple units
  • Hog line speed conversion
  • Between shot timer
Features
Read full description

Chronocurl is a laser stopwatch system useful to calculate relevant information for curling players. The curling delivery is a complex process. In order to progress, it is very important to get accurate feedback in order to quantify the diverse parameter composing the delivery. Three main parameter define the trajectory of a curling stone: the direction, the rotation speed and the linear speed of the rock. Chronocurl quantifies the linear speed of the curling rock when it cuts the laser beam. Using the value of speed, the player can easily work on his consistency without having to refer visually to the distance travelled by the rock. The app lets you read speed data in numerous units such as km/h, mph, m/s. The app also allow conversion of speed data at the hog line into approximation of commonly used split times such as back-line to hog-line or T-line to hog line. Here are some features : All Speed Units : Free and Pro Version Dual display : Free and Pro Version Detail display : Free and Pro Version Rock Circumference Setting: Free and Pro Version Between shot timer : Free and Pro Version Hog to hog split times : Pro Version Audio feedback : Pro Version Side by side practice : Pro Version Multi-Chronocurl : Pro Version Email of practice data : Pro Version Multiple Rock circumference: Upcoming Pro Version

About

DCO Central

Features
Read full description

DCO Central is the World Anti-Doping Agency’s new doping control application. DCO Central provides Sample Collection Agencies (SCAs) and Doping Control Officers (DCOs) with an online and offline solution for secure and fast doping control data processing. DCO Central leverages the Anti-Doping Administration & Management System (ADAMS) to pre-populate the Doping Control Form with planned test and athlete profile information. All data is uploaded back to ADAMS, which reduces manual data entry and improves data integrity and accuracy. The app has real-time access to athlete’s whereabouts information to reduce the chances of an unsuccessful test attempt. DCO Central was developed with athletes in mind in order to promote and protect their health and the integrity of sport. DCO Central features include: Improved Doping Control Experience: - Complete sample process: Athlete notification, Doping Control Forms, Chain of Custodies, Unsuccessful attempts, Athlete refusals, DCO Report - Faster doping control procedure with pre-populated athlete data from ADAMS - Encrypted PDF version of the Doping Control Form sent to the athlete - Anonymous Doping Control Form sent to lab for analysis - Simultaneous translation to protect athlete’s rights when doping control is conducted in another language - Secure digital transfer of athlete’s personal data - DCO has real-time access to athlete’s whereabouts information to reduce the chances of an unsuccessful test attempt Usability - Available online and offline - Paperless - Bilingual athlete-facing interface - Electronic signature - Sample code scanning - Secure connection with ADAMS including automatic upload for the testing outcomes

Screenshots

Chronocurl4 screens

Verdict

The call

The clearest difference is update cadence: DCO Central at monthly against Chronocurl's every 9 months. Chronocurl's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.5). On price, 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

Chronocurl ships an update every 9 months, DCO Central monthly. The most recent releases landed on June 11, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 5 level
Chronocurl versus DCO Central: the parameters behind the verdict, then further details
ParameterChronocurlDCO Central
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 9 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS12.0 — better15.5
Further details — not scored
Size34 MB113 MB
Age rating4+9+
DeveloperGuy SimardWorld Anti-Doping Agency

In-app purchases

None

Chronocurl

No in-app purchases

None

DCO Central

No in-app purchases

Questions

Is Chronocurl free?
Chronocurl is free to download, with no in-app purchases.
Is DCO Central free?
DCO Central is free to download, with no in-app purchases.
Do Chronocurl or DCO Central have ads?
Neither Chronocurl nor DCO Central shows ads.
Which is updated more often, Chronocurl or DCO Central?
Chronocurl ships an update every 9 months, and DCO Central monthly. Most recently, Chronocurl was updated on June 11, 2026 and DCO Central on September 6, 2026.

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