# Bond Concepts vs D

The clearest difference is update cadence: Bond Concepts at every 3 weeks against D's every 4 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.

Bond Concepts ships an update every 3 weeks, D every 4 months. The most recent releases landed on September 7, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Bond Concepts | D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 387 MB | 437 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brengel BV](https://appshunter.io/developer/1751907605) | [Diepstraten Wapeningstaal B.V.](https://appshunter.io/developer/1528884536) |

## What reviewers say

### Bond Concepts

[App page](https://appshunter.io/ios/app/bond-concepts/id6504342995)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### D

[App page](https://appshunter.io/ios/app/d-ws-app/id6726993935)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Bond Concepts free?

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

### Is D free?

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

### Do Bond Concepts or D have ads?

Neither Bond Concepts nor D shows ads.

### Which is updated more often, Bond Concepts or D?

Bond Concepts ships an update every 3 weeks, and D every 4 months. Most recently, Bond Concepts was updated on September 7, 2026 and D on June 1, 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.*