# D vs Quantum Intelligence

The clearest difference is update cadence: Quantum Intelligence at weekly against D's every 31 months. On price, ads, in-app purchases and device support there is nothing between them.

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

D ships an update every 31 months, Quantum Intelligence weekly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | D | Quantum Intelligence |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Weekly** |
| Size | 61 MB | 27 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Health is One LTD](https://appshunter.io/developer/1635028232) | [DIGITALBANK PTE LTD](https://appshunter.io/developer/1468438485) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-exy/id1660916973)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Intelligence

[App page](https://appshunter.io/ios/app/quantum-intelligence/id6480342604)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Quantum Intelligence free?

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

### Do D or Quantum Intelligence have ads?

Neither D nor Quantum Intelligence shows ads.

### Which is updated more often, D or Quantum Intelligence?

D ships an update every 31 months, and Quantum Intelligence weekly. Most recently, D was updated on November 7, 2026 and Quantum Intelligence on November 8, 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.*