# London Underground Map Guide vs Ainstec Iris

The clearest difference is ads: Ainstec Iris at none against London Underground Map Guide's shown. On price, update cadence, 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.

London Underground Map Guide ships an update every 3 months, Ainstec Iris every 2 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | London Underground Map Guide | Ainstec Iris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 75 MB | 161 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grematech Communication](https://appshunter.io/developer/727046960) | [Artificial Intelligence and Sensing Technology Co. Ltd](https://appshunter.io/developer/1862745113) |

## What reviewers say

### London Underground Map Guide

[App page](https://appshunter.io/ios/app/london-underground-map-guide/id904308147)

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

**In-app purchases:** none


### Ainstec Iris

[App page](https://appshunter.io/ios/app/ainstec-iris/id6756779595)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is London Underground Map Guide free?

London Underground Map Guide is free to download, with no in-app purchases.

### Is Ainstec Iris free?

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

### Do London Underground Map Guide or Ainstec Iris have ads?

London Underground Map Guide shows ads; Ainstec Iris does not.

### Which is updated more often, London Underground Map Guide or Ainstec Iris?

London Underground Map Guide ships an update every 3 months, and Ainstec Iris every 2 months. Most recently, London Underground Map Guide was updated on October 7, 2026 and Ainstec Iris on October 6, 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.*