# HBDI® vs Q

The clearest difference is iOS requirement: Q at 13.0 against HBDI®'s 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HBDI® ships an update every 6 weeks, Q every 2 months. The most recent releases landed on September 12, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | HBDI® | Q |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (98 ratings)](https://appshunter.io/ios/app/hbdi/id953195592/reviews)** | — |
| Number of ratings | **98** | — |
| Positive reviews | 81.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 50 MB | 34 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Herrmann International, Inc.](https://appshunter.io/developer/953195591) | [Copro System Co., Ltd.](https://appshunter.io/developer/1641482255) |

## What reviewers say

### HBDI®

[App page](https://appshunter.io/ios/app/hbdi/id953195592)

Access and explore your personal HBDI® Thinking Styles assessment results. This app offers interactive tools to understand your thinking preferences, apply Whole Brain® Thinking, and share insights with others. Enhance communication, problem-solving, and decision-making.

**Highlights:** Interactive HBDI® profile exploration, Personalized tips for communication and problem-solving, Create 'Guesstimated' profiles for others, Tools to apply Whole Brain® Thinking, Share HBDI® Profile badge on social media, Understand thinking under pressure

**Features:** macOS Compatibility

**In-app purchases:** none


### Q

[App page](https://appshunter.io/ios/app/q-mobile-plus/id6478521784)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HBDI® free?

HBDI® is free to download, with no in-app purchases.

### Is Q free?

Q is free to download, with no in-app purchases.

### Do HBDI® or Q have ads?

Neither HBDI® nor Q shows ads.

### Which is updated more often, HBDI® or Q?

HBDI® ships an update every 6 weeks, and Q every 2 months. Most recently, HBDI® was updated on September 12, 2026 and Q on September 18, 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.*