# MobileID vs UnderChat v2

The clearest difference is iOS requirement: MobileID at 11.0 against UnderChat v2's 16.4. On price, update cadence, ads 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.

MobileID ships an update every 4 months, UnderChat v2 every 2 months. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | MobileID | UnderChat v2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (15 ratings)](https://appshunter.io/ios/app/mobileid/id990783086/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 91 MB | 82 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Certisign](https://appshunter.io/developer/669158783) | [Natan Borba](https://appshunter.io/developer/1701921130) |

## What reviewers say

### MobileID

[App page](https://appshunter.io/ios/app/mobileid/id990783086)

Securely authenticate yourself and sign electronic documents with legal validity using your digital certificate on mobile devices. This service enables strong identification and document signing directly from your smartphone or tablet.

**Highlights:** Strong user authentication, Electronic document signing, Legal validity, Mobile device integration, ICP-Brasil digital certificate support

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

**In-app purchases:** none


### UnderChat v2

[App page](https://appshunter.io/ios/app/underchat-v2/id6760209894)

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

**In-app purchases:** none


## Frequently asked questions

### Is MobileID free?

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

### Is UnderChat v2 free?

UnderChat v2 is free to download, with no in-app purchases.

### Do MobileID or UnderChat v2 have ads?

Neither MobileID nor UnderChat v2 shows ads.

### Which is updated more often, MobileID or UnderChat v2?

MobileID ships an update every 4 months, and UnderChat v2 every 2 months. Most recently, MobileID was updated on September 28, 2026 and UnderChat v2 on September 20, 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.*