# Optimal Coffee Extraction — Coffee Extraction Calculator

> Coffee extraction calculator for cafes, roasters, and home brewers. (iPhone/iPad app by Andrew Daniels.)

- Source: https://appshunter.io/ios/app/optimal-coffee-extraction/id1295689736 (this page in markdown: same URL + `.md`)
- Developer: [Andrew Daniels](https://appshunter.io/developer/1295689735)
- Category: Food & Drink, Business
- Price: Free
- Rating: 4.30/5 from 15 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.1 · 31 MB
- Languages: American English
- Released: 2017-10-14
- Data updated: 2026-08-22
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/optimal-coffee-extraction/id1295689736/reviews.md

## What is Optimal Coffee Extraction?

We are coffee people that wanted a better way to calculate extraction of our coffee's. Using modern tools & basic specs from our coffee's we are able to now measure the extraction & rely more on science in conjunction with taste in order to produce the best cup of coffee for ourselves and those we serve.

We wanted to produce a beautiful design that helps represent the amount of work we put into our coffee which & our roasters put into sourcing & producing fantastic coffees. 

Why would I use this? 

Café's: Using quality roasters & quality beans isn't the only thing necessary in serving an awesome cup of coffee. Preparation & Brewing play an important role in a good cup of coffee. Our Optimal Coffee Extraction app will help you find out if you are inline with the SCA guidelines for perfect extraction. 

Roasters: Want to find perfect specs for your coffee's that you can give to your café? Finding the proper dose, time, & final output for espresso & filter coffee is a helpful thing to pass onto your café's and other wholesale clients to uphold proper quality standards. 

Things needed for this app to work:
A Refractometer, either Atago or VST would work.

Have feedback? Email us at help@kaleo.design

## Key features

- Measure coffee extraction scientifically
- Align with SCA guidelines
- Calculate dose, time, and output
- Support for espresso and filter coffee
- Beautiful and functional design
- Useful for cafes and roasters

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/optimal-coffee-extraction/id1295689736/reviews.md

### 1/5 — Complete waste of time

*2022-03-14*

Horrible app with no real purpose. Asks you to create an account! Why do you even need my email?
I was dumb enough to create an account. I have no clue how I could delete it.
The worst part is the app has no real features and the features that exist are horribly designed!
My bad for not checking reviews first!

### 5/5 — Love interface, but...

*2021-02-14*

every time I try to log a measurement, the app crashes and I lose the data. Calculations work.

Edit: logging works now. Updated to 5 stars.

### 5/5 — Sleek - Easy to use

*2020-07-08*

As a former barista using this for my at home setup, it was exactly what I was looking for. It’s a clean, sleek app that’s easy to use and does exactly what it says it does. The dark mode is beautiful and my tired pre-coffee eyes appreciate it as well.

### 5/5 — Gorgeous interface & useful tool

*2019-10-13*

I am a coffee fanatic and coffee shop owner, my team and I use this app to help dial in our coffees especially when we have palette fatigue. It is always great to have this tool to make sure our coffees are properly extracted.

### 5/5 — Beautiful & Accurate.

*2019-10-08*

As the owner of a coffee shop, we dial in daily and being able to use this app simply & efficiently is awesome! And it is beautiful to boot. Highly recommend.

### 2/5 — Updated review

*2019-10-08*

Originally I called this app “okay “ with three stars. Here’s why I updated it to two stars-
Latest update deleted all my notes/recipe details. New notes are not saved at all. The title punctuation bug still exists. Normally, I would delete/reinstall app in attempt to fix it but this would probably delete all my entries. Per developers response, I contacted them via email but never received a response back. I understand this app is put out by a small group of coffee aficionados and do appreciate efforts.This is why I gave it two stars, not one. The app still calculates coffee extraction easily, and is free to use, but its usefulness stops there, without notes. Fortunately I have hand written notes to rely on. If the developers fix the apps failings I will be glad to further update this review.

(Original review)
App gets the minimum of jobs done in a nicely simple way. I use the Atago unit at home and don’t need competitions equipment/app cost or seeming complexity. Please fix the punctuation bug and allow more room in “notes” area (also- notes should have option to be visible on startup page). Recipes should be able to be re-ordered on same main page.

**Developer response:** Hey fam, thanks for you feedback. Sorry we are a small team that offer this app for free bc we use it our selves, if you ever have input or suggestions please let us know and we can take care of those, that is what most of our users do. It is a streamlined app in comparison to our competitors bc we found that the most basic thing we used was the measuring aspect.

Since we are small we try to respond to everyone who messages us & we want to provide a quality product. We will be releasing an iOS 13 Update and we trying to implement the suggestions on the Notes Input... Thanks again for using our app, we hope that it satisfies your needs better in this next release.

### 5/5 — The best coffee app and it’s free

*2019-05-20*

Use this every day for dialing in at Eightfold Coffee. Such a great app and great customer service

### 5/5 — Great app but can’t find the notes

*2018-11-28*

Hello!

First of all, I love your app. Thank you for making it. It’s the probably the most useful tool I have as a barista! 

I have one issue though. I can’t view my notes that I input when entering my recipe. I’ve been writing down all the recipes in the notes and now cannot find them. Maybe I am just being blind. I have all my notes stored for all the coffees we have ever had in the cafe so if they are lost I’ll be quite disappointed. 

How can I view them?

Thanks

Tim
Epiphany Coffee Co

### 5/5 — Yes it’s free and not like VST

*2018-10-26*

I own a VST refractometer and I found that paying 70$ for an application is ridiculous. This one make the basic parts but it’s all right! Thank you for this and looking for new features in the future!!

### 5/5 — Ditching VST app for this

*2018-10-01*

Really great aesthetic. Simple and easy to use. Forget the clunky VST app!

## Frequently asked questions about Optimal Coffee Extraction

### What is Optimal Coffee Extraction used for?

Optimal Coffee Extraction is used to scientifically measure and calculate the extraction of coffee. It helps users achieve the perfect cup by aligning with SCA guidelines for brewing, making it valuable for cafes, roasters, and home brewers.

### What equipment do I need for Optimal Coffee Extraction?

To use Optimal Coffee Extraction effectively, you will need a refractometer. Both Atago and VST refractometers are compatible with the app.

### Is Optimal Coffee Extraction suitable for professional use?

Yes, Optimal Coffee Extraction is designed for both cafes and roasters. Cafes can use it to ensure consistent quality, while roasters can find perfect specs to provide to their wholesale clients.

### Does Optimal Coffee Extraction help with different coffee types?

Yes, the app helps find proper dose, time, and final output for both espresso and filter coffee, catering to different brewing methods.

### How often is Optimal Coffee Extraction updated?

The app was last updated on October 31, 2019, to version 5.1. While not frequently updated recently, it remains a functional tool for its intended purpose.

### What is the user rating for Optimal Coffee Extraction?

Optimal Coffee Extraction has a rating of 4.3 stars based on 15 ratings, indicating generally positive user sentiment.

### Is Optimal Coffee Extraction available on Android devices?

Based on the provided data, Optimal Coffee Extraction is supported on iPhone and iPod devices. Information regarding Android compatibility is not available.

### Does Optimal Coffee Extraction have ads?

No, Optimal Coffee Extraction does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 5 releases)

### 5.1 — 2019-10-31

- Minor bug fix

### 5.0 — 2019-10-02

iOS 13 Update - Do you like beautiful interfaces? Well now try ours in dark mode! For those night owls that have to measure their nightly espresso needs.

- Update dark theme
- Minor bug fix

Thanks for using the app, we appreciate your feedback & love hearing from you.

### 4.0 — 2018-12-11

Minor Bug Fixing

### 3.0 — 2018-11-27

Small UI Changes 

Fixed bug where iPhone X users couldn’t register

### Version 2.0 — 2018-08-26

Major UI Overhaul

Improved User Experience

Switched up how you input data, from the pesky sliders to actual inputs you can type on a number pad.

Increased the limits for brew recipes, now it doesn't matter if you make a European Pour-over or an American Sized Batch brew we can measure your extraction properly. 

We hope you enjoy and we are always open to feedback on the app. We love hearing from you and have taken a lot of the feedback we have received an implemented it in this latest build.

## Apps similar to Optimal Coffee Extraction

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [VST CoffeeTools PRO for iPhone](https://appshunter.io/ios/app/vst-coffeetools-pro-for-iphone/id1016450821) | 4.0 (6) | $39.99 | Food & Drink |
| [Catador CVA](https://appshunter.io/ios/app/catador-cva/id6447788662) | — | Free | Food & Drink |
| [Single Origin - Coffee Timer](https://appshunter.io/ios/app/single-origin-coffee-timer/id1480168613) | 4.5 (99) | $0.99 | Food & Drink |
| [Coffee Ratios](https://appshunter.io/ios/app/coffee-ratios/id1625216375) | 5.0 (5) | Free | Food & Drink |
| [Coffee Ratio Calculator](https://appshunter.io/ios/app/coffee-ratio-calculator/id6443783115) | 5.0 (8) | Free | Food & Drink |
| [Bean Juice](https://appshunter.io/ios/app/bean-juice/id1502380351) | 4.6 (14) | Free | Food & Drink |

## More apps by Andrew Daniels

- [Optimal Coffee Notes](https://appshunter.io/ios/app/optimal-coffee-notes/id1583625309)
- [nocodeui](https://appshunter.io/ios/app/nocodeui/id6502469490)
- [KnowHim](https://appshunter.io/ios/app/knowhim/id6742201641)

All apps by Andrew Daniels: https://appshunter.io/developer/1295689735

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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 2026-08-22.*