# Stack 101 Tower vs Orbitap

The clearest difference is update cadence: Stack 101 Tower at every 5 days against Orbitap's fortnightly. Stack 101 Tower also leads on iOS requirement (12.0 vs 15.1). 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.

Stack 101 Tower ships an update every 5 days, Orbitap fortnightly. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Stack 101 Tower | Orbitap |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 54 MB | 46 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZHENG YU-XIANG](https://appshunter.io/developer/1863257025) | [Muhammad Awwad](https://appshunter.io/developer/1882503914) |

## What reviewers say

### Stack 101 Tower

[App page](https://appshunter.io/ios/app/stack-101-tower/id6759484448)

**Features:** macOS Compatibility

**In-app purchases:** none


### Orbitap

[App page](https://appshunter.io/ios/app/orbitap-orbit-and-tap/id6760269490)

**In-app purchases:** none


## Frequently asked questions

### Is Stack 101 Tower free?

Stack 101 Tower is free to download, with no in-app purchases.

### Is Orbitap free?

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

### Do Stack 101 Tower or Orbitap have ads?

Both Stack 101 Tower and Orbitap show ads.

### Which is updated more often, Stack 101 Tower or Orbitap?

Stack 101 Tower ships an update every 5 days, and Orbitap fortnightly. Most recently, Stack 101 Tower was updated on September 14, 2026 and Orbitap on September 22, 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.*