# Zing vs D. Watson

The clearest difference is ads: Zing at none against D. Watson's shown. On price, update cadence, 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.

Zing ships an update fortnightly, D. Watson every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | Zing | D. Watson |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 79 MB | 138 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [HashDecodes](https://appshunter.io/developer/1808725557) | [BAKHTAWARI GROUP](https://appshunter.io/developer/1832525107) |

## What reviewers say

### Zing

[App page](https://appshunter.io/ios/app/zing-scents/id6744655256)

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

**In-app purchases:** none


### D. Watson

[App page](https://appshunter.io/ios/app/d-watson/id6749865902)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zing free?

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

### Is D. Watson free?

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

### Do Zing or D. Watson have ads?

D. Watson shows ads; Zing does not.

### Which is updated more often, Zing or D. Watson?

Zing ships an update fortnightly, and D. Watson every 3 weeks. Most recently, Zing was updated on November 5, 2026 and D. Watson on November 5, 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.*