# Two Links Double Pendulum vs DoDiD

The clearest difference is update cadence: DoDiD at every 6 months against Two Links Double Pendulum's every 47 months. DoDiD also leads on iOS requirement (13.0 vs 18.2). 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.

Two Links Double Pendulum ships an update every 47 months, DoDiD every 6 months. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Two Links Double Pendulum | DoDiD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 6 months** |
| Size | 281 MB | 34 MB |
| Requires iOS | 18.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) | [Shanghai Shiguang Liusheng Network Technology Co., Ltd.](https://appshunter.io/developer/1818792582) |

## What reviewers say

### Two Links Double Pendulum

[App page](https://appshunter.io/ios/app/two-links-double-pendulum/id1625794656)

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

**In-app purchases:** none


### DoDiD

[App page](https://appshunter.io/ios/app/dodid-interactive-3d-and-music/id6746856196)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Two Links Double Pendulum free?

Two Links Double Pendulum is free to download, with no in-app purchases.

### Is DoDiD free?

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

### Do Two Links Double Pendulum or DoDiD have ads?

Neither Two Links Double Pendulum nor DoDiD shows ads.

### Which is updated more often, Two Links Double Pendulum or DoDiD?

Two Links Double Pendulum ships an update every 47 months, and DoDiD every 6 months. Most recently, Two Links Double Pendulum was updated on October 25, 2026 and DoDiD on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*