# D vs Synchronism

The clearest difference is update cadence: Synchronism at every 2 days against D's every 5 days. D's advantage is iOS requirement (16.4 vs 18.0). 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 5 days, Synchronism every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | D | Synchronism |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 88 MB | 120 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [d-omniverse](https://appshunter.io/developer/1807249660) | [ooo.engineering Inc.](https://appshunter.io/developer/1825849811) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-omniverse/id6744351448)

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

**In-app purchases:** none


### Synchronism

[App page](https://appshunter.io/ios/app/synchronism/id6748982509)

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

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Synchronism free?

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

### Do D or Synchronism have ads?

Neither D nor Synchronism shows ads.

### Which is updated more often, D or Synchronism?

D ships an update every 5 days, and Synchronism every 2 days. Most recently, D was updated on October 25, 2026 and Synchronism on October 25, 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.*