Comparison

Clockwork vs EORNA Congress

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

Head to head
About

Clockwork

This app allows you to measure the accuracy of your watches using your phone's camera. It compares an image of your watch to an atomic clock to calculate its timekeeping offset. Track accuracy over time with graphs and store detailed watch information.

Highlights
  • Measure accuracy using images
  • Atomic clock synchronization
  • Accuracy over time graphs
  • Store detailed watch information
  • Dark mode support
  • Digital and analog atomic clock
Features
Read full description

Measure the accuracy of your watches today! Clockwork includes several useful features. You can store watch information, measure watch accuracy, and set your watch using a clock synchronized with atomic time. Check it out now! _MEASUREMENTS USING IMAGES_ Most other watch measurement apps require either third-party equipment or that you press a button at a specific time. Additional equipment is often expensive, and timing a button press is difficult to do precisely. Clockwork solves this by letting you take a picture of your watch and indicate the time shown in the image. We then synchronize the image capture time with atomic time before comparing it with the time shown on the watch to calculate an offset. Taking measurements over time provides a real-world view of your watch's accuracy. _GRAPHS_ Watch your measurements over time on a beautifully crafted graph. The graph shows how your watch's accuracy changes over time and offers several modes to help you understand its performance. _WHY MEASURE?_ Knowing the accuracy of your watch is interesting on its own, but it also has several practical uses. It can indicate when it is time for a service, and documented accuracy could increase resale value, especially for vintage watches. _STORE DETAILED INFORMATION_ In case of theft or accidents, it will always help to have your information stored in a secure place. _ATOMIC CLOCK, DARK MODE AND MUCH MORE!_ Clockwork includes an atomic clock in both digital and analog formats to help you set your watch as precisely as possible. Powerful settings such as Dark or Light mode, separate day and date formats, and different ways to sort your watches let you customize the app to your liking. // Appfred AS © 2026

About

EORNA Congress

Read full description

The application for the EORNA 2024 congress is now available. From the application you can consult an updated program at all times. -Locate the exhibitors of our collaborators..- -See the digital posters and summaries of oral communications. -You can vote for your favorite poster and communication. -We have sections that we constantly update with useful information during the congress. -You will receive notifications with featured events. - And much more...

Screenshots

Clockwork4 screens
EORNA Congress4 screens

Verdict

The call

The clearest difference is in-app purchases: EORNA Congress at none against Clockwork's 1. EORNA Congress also leads on iOS requirement (14.0 vs 16.4). On price 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. Clockwork sells 1 one-off in-app purchase. EORNA Congress asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Clockwork versus EORNA Congress: the parameters behind the verdict, then further details
ParameterClockworkEORNA Congress
PriceFreeFree
Rating4.4 (24 ratings) — better—
Positive reviews42.9% of reviews—
Number of ratings24 — better—
Update frequencyEvery 3 weeks—
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone — better—
Requires iOS16.414.0 — better
Further details — not scored
Size242 MB59 MB
Age rating4+17+
DeveloperAppfred ASsoftmediaplanner.com

In-app purchases

1 purchases

Clockwork

One-time1
  • Clockwork Premium$5.99
None

EORNA Congress

No in-app purchases

Questions

Is Clockwork free?
Clockwork is free to download, with in-app purchases available.
Is EORNA Congress free?
EORNA Congress is free to download, with no in-app purchases.

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