# Flow Chart, Block Diagram vs ThinkSpace

The clearest difference is rating: ThinkSpace at 4.3 against Flow Chart, Block Diagram's 2.8. ThinkSpace also leads on ratings volume (273 vs 11) and review sentiment (54% vs 44%). Flow Chart, Block Diagram's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Flow Chart, Block Diagram 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 2.8. That said, the two scores are not equally well evidenced: ThinkSpace has 273 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 44% of Flow Chart, Block Diagram's written reviews are positive against 54% of ThinkSpace's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Flow Chart, Block Diagram | ThinkSpace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (11 ratings)](https://appshunter.io/ios/app/flow-chart-block-diagram/id1064421945/reviews) | **[4.3 (273 ratings)](https://appshunter.io/ios/app/thinkspace-mind-map-and-notes/id1335574515/reviews)** |
| Number of ratings | 11 | **273** |
| Positive reviews | 44.4% of reviews | **53.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 68 MB | 238 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Evgeny Akinshin](https://appshunter.io/developer/954302707) | [Naoya Enokida](https://appshunter.io/developer/583844490) |

## What reviewers say

### Flow Chart, Block Diagram

[App page](https://appshunter.io/ios/app/flow-chart-block-diagram/id1064421945)

Easily create complex flowcharts and diagrams on a tablet with an automatic layout algorithm and shape recognition. Design professional business graphics using a variety of smart shapes for different diagram types, then export your creations to multiple formats.

**Highlights:** Automatic layout algorithm, Hand-drawn shape recognition, Hundreds of pre-designed smart shapes, Support for BPMN 1.2 and 2.0, Export to PDF, PNG, JPEG, SVG, VDX, Dynamic grid

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $11.99 | 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 Flow Chart, Block Diagram free?

Flow Chart, Block Diagram 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, Flow Chart, Block Diagram or ThinkSpace?

ThinkSpace is rated higher. Flow Chart, Block Diagram averages 2.8 out of 5 from 11 ratings, while ThinkSpace averages 4.3 from 273 ratings.

### Do Flow Chart, Block Diagram or ThinkSpace have ads?

Neither Flow Chart, Block Diagram nor ThinkSpace shows ads.

### Which is updated more often, Flow Chart, Block Diagram or ThinkSpace?

Flow Chart, Block Diagram ships an update monthly, and ThinkSpace monthly. Most recently, Flow Chart, Block Diagram was updated on September 22, 2026 and ThinkSpace on September 19, 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.*