# 3D STEREOVISION TIME MACHINE 2 vs Chain Stacker

The clearest difference is ads: 3D STEREOVISION TIME MACHINE 2 at none against Chain Stacker's shown. 3D STEREOVISION TIME MACHINE 2 also leads on update cadence (every 3 months vs every 31 months) and monetization model (free vs ad-supported). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for 3D STEREOVISION TIME MACHINE 2 against 5.0 for Chain Stacker. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

3D STEREOVISION TIME MACHINE 2 ships an update every 3 months, Chain Stacker every 31 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | 3D STEREOVISION TIME MACHINE 2 | Chain Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/3d-stereovision-time-machine-2/id432270029/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/chain-stacker/id1600024125/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 31 months |
| Monetization | **Free** | Ad-supported |
| Size | 60 MB | 79 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Avatar](https://appshunter.io/developer/375690746) | [omer cetin](https://appshunter.io/developer/1584332419) |

## What reviewers say

### 3D STEREOVISION TIME MACHINE 2

[App page](https://appshunter.io/ios/app/3d-stereovision-time-machine-2/id432270029)

Explore historical moments and figures through immersive 3D stereoscopic images. View iconic figures and events from over 150 years ago in a unique, interactive format.

**Highlights:** 3D stereoscopic image viewing, Flipvision animations, Historical portraits and scenes, Vintage music background, Interactive image navigation

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

**In-app purchases:** none


### Chain Stacker

[App page](https://appshunter.io/ios/app/chain-stacker/id1600024125)

A unique jewelry-making game where you stack chains and fill them with jewels. Enhance your chains with precious metals and gems to increase their value. Compete to become the richest by making the best offers at the end of each level.

**Highlights:** Stack chains, Fill chains with jewels, Enhance chains with silver, gold, and diamonds, Increase chain value, Make offers to become rich

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3D STEREOVISION TIME MACHINE 2 free?

3D STEREOVISION TIME MACHINE 2 is free to download, with no in-app purchases.

### Is Chain Stacker free?

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

### Which has better reviews, 3D STEREOVISION TIME MACHINE 2 or Chain Stacker?

3D STEREOVISION TIME MACHINE 2 and Chain Stacker are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do 3D STEREOVISION TIME MACHINE 2 or Chain Stacker have ads?

Chain Stacker shows ads; 3D STEREOVISION TIME MACHINE 2 does not.

### Which is updated more often, 3D STEREOVISION TIME MACHINE 2 or Chain Stacker?

3D STEREOVISION TIME MACHINE 2 ships an update every 3 months, and Chain Stacker every 31 months. Most recently, 3D STEREOVISION TIME MACHINE 2 was updated on October 30, 2026 and Chain Stacker on October 30, 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.*