# GeeFlow — Espresso machine controller

> Espresso machine controller (iPhone/iPad app by Krzysztof Drobek.)

- Source: https://appshunter.io/ios/app/geeflow/id6813844388 (this page in markdown: same URL + `.md`)
- Developer: [Krzysztof Drobek](https://appshunter.io/developer/6813844390)
- Category: Utilities, Food & Drink
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.2 · 46 MB
- Languages: American English
- Released: 2026-09-22
- Data updated: 2026-09-28
- User reviews in markdown: https://appshunter.io/ios/app/geeflow/id6813844388/reviews.md

## What is GeeFlow?

GeeFlow is a free, open-source, privacy-first companion app designed for espresso enthusiasts to monitor, control, and profile coffee extractions over Bluetooth Low Energy (BLE).

Whether you want fine-grained control over extraction pressure, real-time feedback from a smart coffee scale, or precise boiler temperature tuning, GeeFlow gives you complete command over your brewing setup. 

KEY FEATURES:

100% Free & Open-Source (GPL-3.0)
• Fully open-source project with complete code transparency on GitHub.
• Independent, community-driven software with no paywalled core features and no subscriptions.

Advanced Brew Profiling
• Multi-step profiling: Configure pre-infusion, pressure profiling, flow rates, and hold times.
• Freehand brewing: Steer pressure and flow live directly from the control screen.
• Auto-finish triggers: Automatically stop extractions based on target brew weight or volume.
• Profile library: Create, duplicate, and customize multiple recipes.

Real-Time Extraction Dashboard & Live Charts
• Live telemetry: Monitor brew and steam boiler temperatures, brew pressure, water flow, and elapsed time.
• Interactive curves: Real-time graphs for pressure, flow rate, weight, and flow-by-weight.
• Shot history: Review recorded extraction curves and compare past brews.

Smart Scale Integration
• Seamlessly pair supported Bluetooth coffee scales.
• Real-time weight and weight flow calculation feeding directly into dashboard charts and cut-off conditions.

Machine Control & Settings
• Independent control and target temperatures for brew and steam boilers.
• Quick steam boiler toggle directly from the dashboard.
• Low water level warnings and real-time heating status.

Privacy-First & 100% Offline
• No account or registration required.
• Zero telemetry, zero analytics, zero data collection.
• All recipes and brew data remain strictly stored on your local device.

Built-in Demo Mode
• Explore the full interface, test profiles, and experiment with charts without needing physical hardware connected.

---
COMPATIBILITY:
• Designed for and tested with the Wendougee Data-S espresso machine
• Independent, community-driven project. Not affiliated with or endorsed by any hardware manufacturer.
• Please follow all standard safety guidelines provided by your espresso machine manufacturer.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Espresso | $1.99 | one-time |
| Cappuccino | $4.99 | one-time |
| Bag of Specialty Beans | $14.99 | one-time |
| Year of Coffee | $99.99 | one-time |



## Version history (last 2 releases)

### 1.0.2 — 2026-09-24

Added a new screensaver mode, machine cleaning reminders, and an improved profile step editor. Also refined brew charts, made the demo simulation more realistic, and improved overall UI stability.

### 1.0.1 — 2026-09-23

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-28.*