# Flowdia Diagrams vs ThinkSpace

The clearest difference is rating: ThinkSpace at 4.3 against Flowdia Diagrams's 3.4. ThinkSpace also leads on ratings volume (273 vs 66). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Flowdia Diagrams sells 1 one-off in-app purchase and ThinkSpace sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ThinkSpace holds the better App Store score, 4.3 against 3.4. Both are backed by a comparable volume of ratings — 66 and 273 respectively. Written reviews split almost evenly too, at 54% and 54% positive.

Flowdia Diagrams ships an update every 2 weeks, ThinkSpace monthly. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Flowdia Diagrams | ThinkSpace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (66 ratings)](https://appshunter.io/ios/app/flowdia-diagrams/id1170864140/reviews) | **[4.3 (273 ratings)](https://appshunter.io/ios/app/thinkspace-mind-map-and-notes/id1335574515/reviews)** |
| Number of ratings | 66 | **273** |
| Positive reviews | **54.2% of reviews** | 53.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 238 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Behzad Gorimar](https://appshunter.io/developer/1125854088) | [Naoya Enokida](https://appshunter.io/developer/583844490) |

## What reviewers say

### Flowdia Diagrams

[App page](https://appshunter.io/ios/app/flowdia-diagrams/id1170864140)

Create professional flowcharts, mind maps, and various other diagrams with an intuitive interface. Easily connect shapes, add elements, and customize your designs. Export your work in multiple formats, including PNG, JPG, PDF, and SVG.

**Highlights:** Create flowcharts, mind maps, BPMN, and network diagrams, Intuitive shape connection and element addition, Customizable shape appearance, Export to PNG, JPG, PDF, and SVG, Import custom images, Supports various UML diagram types

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $9.99 | one-time |


### ThinkSpace

[App page](https://appshunter.io/ios/app/thinkspace-mind-map-and-notes/id1335574515)

This app is a powerful thinking tool that supports creative workflows with an intuitive interface and various thinking methods. It offers features like handwritten notes, unlimited canvases, idea generation frameworks, and real-time collaboration to aid brainstorming and idea structuring.

**Highlights:** Handwritten sticky notes, Unlimited canvas sizes, Idea generation frameworks, Real-time sharing, Mind mapping, Diagram creation, AI brainstorming

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThinkSpace Pro Access | $2.99 | per month |
| ThinkSpace Pro Access | $29.99 | per year |

**What reviewers like**

- 💡 Innovative freeform mind-mapping with infinite canvas
- ✏️ Excellent Apple Pencil integration and handwriting support
- 🎨 Flexible and creative brainstorming capabilities
- 📋 Multiple thinking frameworks and templates included
- 👍 Intuitive sticky note-like interface

**What reviewers complain about**

- 🐛 Frequent crashes and app freezing
- ⚠️ Data loss issues after subscription or app updates
- 💸 Aggressive paywall with limited free tier
- 🔒 Privacy concerns with data collection policies
- 😕 Steep learning curve and unintuitive UI

**Reported bugs**

- App crashes on launch or during use
- Data disappears after upgrading to paid version
- Canvas fails to load with many items
- Text boxes become uneditable
- Grouped items move unexpectedly when resizing

**Requested features**

- One-time purchase option instead of subscription
- Dark mode theme
- Better palm rejection for Apple Pencil
- Folder/project organization system
- Ability to delete canvases easily


## Frequently asked questions

### Is Flowdia Diagrams free?

Flowdia Diagrams is free to download, with in-app purchases available.

### Is ThinkSpace free?

ThinkSpace is free to download, with in-app purchases available.

### Which has better reviews, Flowdia Diagrams or ThinkSpace?

ThinkSpace is rated higher. Flowdia Diagrams averages 3.4 out of 5 from 66 ratings, while ThinkSpace averages 4.3 from 273 ratings.

### Do Flowdia Diagrams or ThinkSpace have ads?

Neither Flowdia Diagrams nor ThinkSpace shows ads.

### Which is updated more often, Flowdia Diagrams or ThinkSpace?

Flowdia Diagrams ships an update every 2 weeks, and ThinkSpace monthly. Most recently, Flowdia Diagrams was updated on October 13, 2026 and ThinkSpace on October 15, 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.*