# Topology Lens vs IT電卓+

The clearest difference is ads: Topology Lens at none against IT電卓+'s shown. IT電卓+'s advantage is iOS requirement (15.0 vs 17.0). On price, 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.

## The numbers

| Metric | Topology Lens | IT電卓+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 weeks |
| Size | 7 MB | 7 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Wilkie](https://appshunter.io/developer/1867772930) | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) |

## What reviewers say

### Topology Lens

[App page](https://appshunter.io/ios/app/topology-lens/id6758349599)

**Features:** macOS Compatibility

**In-app purchases:** none


### IT電卓+

[App page](https://appshunter.io/ios/app/it-plus/id6774959562)

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

**In-app purchases:** none


## Frequently asked questions

### Is Topology Lens free?

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

### Is IT電卓+ free?

IT電卓+ is free to download, with no in-app purchases.

### Do Topology Lens or IT電卓+ have ads?

IT電卓+ shows ads; Topology Lens does not.

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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.*