# Sankey Diagram — Beautiful Flow Diagram Editor

> Interactive editor for creating and exporting Sankey flow diagrams. (iPhone/iPad app by squishLogic.)

- Source: https://appshunter.io/ios/app/sankey-diagram/id866376517 (this page in markdown: same URL + `.md`)
- Developer: [squishLogic](https://appshunter.io/developer/353387502)
- Category: Productivity, Utilities
- Price: $9.99
- Rating: 4.30/5 from 3 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2014-06-29
- Data updated: 2026-09-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sankey-diagram/id866376517/reviews.md

## What is Sankey Diagram?

Professional drawing tool to create Sankey Diagrams.  These diagrams show flows, where the width is proportional to the rate of flow.  The diagrams can be created interactively, adding flow sources and sinks, moving nodes and flows around, editing colors, and more.  The diagrams can be exported as a .PDF or .PNG, shared by email, messaging, and saved to the Camera Roll.  A .SNK file version of your diagram can be shared by email with other Sankey Diagram app users, who will be able to load and edit the diagram.  You can also create a diagram by importing a .CSV file from an email attachment or iCloud. The diagram is automatically created from the data in the spreadsheet.  Edit diagrams on any of your devices using iCloud.

## Key features

- Interactive Sankey diagram creation
- Adjustable flow sources and sinks
- Node and flow editing
- Color customization
- Export to PDF and PNG
- Shareable editable files
- Import data from CSV

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/sankey-diagram/id866376517/reviews.md

### 5/5 — Smooth

*2026-09-07*

I cannot believe how smoothly I can move around the boxes and the flows follow.  Makes it intuitive to arrange the diagram.  The essential feature however, is ability to export to PDF.  That makes the app practical for my use.

### 3/5 — Not ready for prime time

*2024-12-08*

Update 12/8/24, This app hasn’t been updated for 4 years.  Evidently, it hasn’t kept up with iOS updates so it doesn’t work any more.  Pity….  I wish somebody would update it.

Update, 12/22/18

Too bad the developers have given up on this little app. It has great potential to be a useful app for expressing complicated flows in an easy to understand format. 

The bugs I reported in 2015 seem to have been fixed so I upped the rating again. 

Update, 1/11/15

This is still quite buggy.  

With the latest version, when I create a node, there is no window to change its name, color etc.  So, now I can have multiple nodes called "Node 1"

Don't give up.  The app has potential.

Original rating:

I've been waiting for a Sankey app for years.  I'm still waiting for one that works.

First, the only units that seem to be allowed are the default units called "flow units".  Can't enter dollars or gallons or pounds or whatever.

Second, the app crashed 3 times during the first hour.

Third, I left the app for a moment and when I returned, the only version of my diagram was an hour old.  All the work I did during the previous hour was gone.

I would like my money back, please.

### 3/5 — Good idea but...

*2020-06-30*

The idea is great and a couple of examples are available. 30% of the screen is covered with the library menu which reduce the working surface to a very small area. Moving elements around doesn‘t work properly and formatting is complicated. Every element needs to be marked and then a menu to be opened.
Good basis but needs plenty of improvements regarding user friendliness.

### 5/5 — funktioniert prima..

*2019-12-30*

Ich brauchte allerdings eine kurze zeit, um die Bedienung zu verstehen. Den ersten Kasten erstellt man durch besonders langes drücken auf die freie Fläche. Einen Flow bekommt man, wenn man 2 Kästen gedrückt hält.
Bewegen, indem man sofort nach touch zieht.

super!

### 5/5 — Sankey Diagramm

*2019-02-20*

Für mich die beste App zum Erstellen von vernünftigen Diagrammen.

### 3/5 — Not ready for prime time

*2018-12-22, version 2.03*

Update, 12/22/18

Too bad the developers have given up on this little app. It has great potential to be a useful app for expressing complicated flows in an easy to understand format. 

The bugs I reported in 2015 seem to have been fixed so I upped the rating again. 

Update, 1/11/15

This is still quite buggy.  

With the latest version, when I create a node, there is no window to change its name, color etc.  So, now I can have multiple nodes called "Node 1"

Don't give up.  The app has potential.

Original rating:

I've been waiting for a Sankey app for years.  I'm still waiting for one that works.

First, the only units that seem to be allowed are the default units called "flow units".  Can't enter dollars or gallons or pounds or whatever.

Second, the app crashed 3 times during the first hour.

Third, I left the app for a moment and when I returned, the only version of my diagram was an hour old.  All the work I did during the previous hour was gone.

I would like my money back, please.

### 1/5 — Worst application ever!

*2016-11-28*

Try a free web based service for sankeys. This is hopeless, and charged 14.99 for the privilege

### 1/5 — Waster of Money

*2016-10-21*

For the $15 I paid for this app, I was expecting something. I got virtually nothing. This app is not worth downloading even for FREE. Sorry devs, apps need features.

### 5/5 — it woks efficiently

*2014-10-26*

was able to make my first diagram right away being productive with my time and wasting it.

## Frequently asked questions about Sankey Diagram

### What is Sankey Diagram?

Sankey Diagram is a professional drawing tool designed to create Sankey diagrams, which visually represent flows where the width of the lines is proportional to the rate of flow.

### How can I create a Sankey diagram?

You can create diagrams interactively by adding flow sources and sinks, moving nodes and flows, and editing colors. You can also import data from a .CSV file.

### What export options are available for Sankey Diagram?

Diagrams can be exported as .PDF or .PNG files. They can also be shared as a .SNK file, allowing other users to load and edit them.

### Can I edit diagrams on multiple devices?

Yes, you can edit diagrams on any of your devices using iCloud, ensuring your work is synchronized across your iPhone and iPad.

### What is the price of Sankey Diagram?

Sankey Diagram is available for a one-time purchase of $9.99.

### Does Sankey Diagram have ads?

No, Sankey Diagram is ad-free, providing an uninterrupted experience for creating your diagrams.

### What is the update frequency for Sankey Diagram?

The app was last updated on July 22, 2025, indicating ongoing development and support.

### What devices does Sankey Diagram support?

Sankey Diagram is supported on both iPhone and iPad devices.

## Version history (last 5 releases)

### 3.03 — 2025-07-22

• Improved support for iOS 18

### 3.02 — 2020-11-23

Import .csv now allows you to specify color for nodes and flows

### 3.01 — 2020-11-03

+ Better saving when app is backgrounded
+ Provide button to apply edits to all nodes or all flows
+ Fixed bug with exporting to PDF

### 3.0 — 2020-04-18

+ Updated to IOS13
+ Fixed bug with moving merged flows

### 2.03 — 2018-04-03

+ Fixed bug with saving diagram image to Photo roll under iOS11.
+ Fixed bug with display zooming out unexpectedly.
+ Fixed bug with email of diagram file.
+ Importing CSV table now detects multiple levels.

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All apps by squishLogic: https://appshunter.io/developer/353387502

## Related topics

[sankey diagram](https://appshunter.io/ios/topics/sankey-diagram) · [diagram flow](https://appshunter.io/ios/topics/diagram-flow)

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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 2026-09-10.*