Comparison

Eureka Prometheus User vs Caliburr

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

Head to head
About

Eureka Prometheus User

Remotely control your coffee grinder's settings, monitor its operation, and track consumption in real-time. Access exclusive recipes, personalize them to your taste, and view detailed statistics for efficient maintenance. Connect with your grinder anytime, anywhere.

Highlights
  • Remote adjustment of grinding parameters
  • Real-time operation and consumption monitoring
  • Exclusive, customizable coffee recipes
  • Detailed grinder performance statistics
  • Component condition monitoring for maintenance
  • Dedicated Customer Care section with FAQs
Read full description

The Iot Connectivity system ensures full access to the settings of your coffee grinder, with the possibility of remotely adjusting the grinding parameters, monitoring operation and consumption in real time. You will have access to recipes designed exclusively for your grinder, selecting the ones that best meet your tastes and personalizing them according to your preferences of the moment. Each statistic of your grinder will be available here, from the monitoring of performance by period and by ground coffee to the condition of the internal components, to allow you the most efficient maintenance possible. Finally, you will find an exclusive "Customer Care" section, with dedicated and customized videos and FAQs for your grinder. Wherever you are, you will always be in contact with your coffee grinder, interacting with it thanks to your Eureka Prometheus User, the app you will never be able to do without.

About

Caliburr

Features
Read full description

Caliburr is the crowdsourced coffee dial-in companion for espresso enthusiasts. Log your grinder settings, dose, yield, and brew time — then browse the community's recipes to find the perfect starting point for any bean or machine. DIAL IN FASTER • Browse recipes filtered by grinder, bean, and brew method • See community-aggregated grind settings so you know where to start • Log your own recipes and track what works YOUR EQUIPMENT, YOUR RECIPES • Add your grinder and espresso machine from a verified database • Save recipes to your profile and build your personal dial-in history • Like recipes from the community to save them for later BUILT FOR THE COMMUNITY • Verify equipment entries to keep the database accurate • Contribute your own recipes to help others dial in the same setup • Anonymous community feed keeps recipes visible even after account deletion Terms of Use: https://caliburr.coffee/terms

Screenshots

Eureka Prometheus User4 screens
Caliburr4 screens

Verdict

The call

The clearest difference is in-app purchases: Eureka Prometheus User at none against Caliburr's 2. Eureka Prometheus User also leads on iOS requirement (13.0 vs 15.1). Caliburr's advantage is update cadence (fortnightly vs every 3 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. Caliburr sells 2 in-app purchases, starting at $1.99 per month. Eureka Prometheus User asks for nothing beyond the download.

UpkeepUpdate frequency

Eureka Prometheus User ships an update every 3 months, Caliburr fortnightly. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
Eureka Prometheus User versus Caliburr: the parameters behind the verdict, then further details
ParameterEureka Prometheus UserCaliburr
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size46 MB49 MB
Age rating4+4+
DeveloperConti Valerio SrlVellapps LLC

In-app purchases

None

Eureka Prometheus User

No in-app purchases

2 purchases

Caliburr

Subscriptions2
  • Caliburr Backer - Monthly$1.991 Month
  • Caliburr Backer - Annual$14.991 Year

Questions

Is Eureka Prometheus User free?
Eureka Prometheus User is free to download, with no in-app purchases.
Is Caliburr free?
Caliburr is free to download, with in-app purchases available.
Do Eureka Prometheus User or Caliburr have ads?
Neither Eureka Prometheus User nor Caliburr shows ads.
Which is updated more often, Eureka Prometheus User or Caliburr?
Eureka Prometheus User ships an update every 3 months, and Caliburr fortnightly. Most recently, Eureka Prometheus User was updated on October 12, 2026 and Caliburr on October 25, 2026.

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