# Eureka Prometheus User vs Caliburr

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.

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.

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.

## The numbers

| Metric | Eureka Prometheus User | Caliburr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/eureka-prometheus-user/id1611332719/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 46 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Conti Valerio Srl](https://appshunter.io/developer/1611332721) | [Vellapps LLC](https://appshunter.io/developer/1365654150) |

## What reviewers say

### Eureka Prometheus User

[App page](https://appshunter.io/ios/app/eureka-prometheus-user/id1611332719)

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

**In-app purchases:** none


### Caliburr

[App page](https://appshunter.io/ios/app/caliburr/id6761644774)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caliburr Backer - Monthly | $1.99 | per month |
| Caliburr Backer - Annual | $14.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*