# HardTank vs Eureka Prometheus User

The clearest difference is update cadence: Eureka Prometheus User at every 3 months against HardTank's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HardTank ships an update every 9 months, Eureka Prometheus User every 3 months. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | HardTank | Eureka Prometheus User |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 30 MB | 46 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hard Beans Coffee Roasters Sp. z o.o.](https://appshunter.io/developer/1619091581) | [Conti Valerio Srl](https://appshunter.io/developer/1611332721) |

## What reviewers say

### HardTank

[App page](https://appshunter.io/ios/app/hardtank/id1556261653)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is HardTank free?

HardTank is free to download, with no in-app purchases.

### Is Eureka Prometheus User free?

Eureka Prometheus User is free to download, with no in-app purchases.

### Do HardTank or Eureka Prometheus User have ads?

Neither HardTank nor Eureka Prometheus User shows ads.

### Which is updated more often, HardTank or Eureka Prometheus User?

HardTank ships an update every 9 months, and Eureka Prometheus User every 3 months. Most recently, HardTank was updated on September 8, 2026 and Eureka Prometheus User on September 9, 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.*