# A2A Authenticator vs SINGERH

A2A Authenticator and SINGERH are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | A2A Authenticator | SINGERH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 27 MB | 27 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jupiter System & Solution](https://appshunter.io/developer/1397216911) | [Ministerio da Administracao Publica Trabalho e Seguranca Social](https://appshunter.io/developer/1615412412) |

## What reviewers say

### A2A Authenticator

[App page](https://appshunter.io/ios/app/a2a-authenticator/id6744716942)

**Features:** macOS Compatibility

**In-app purchases:** none


### SINGERH

[App page](https://appshunter.io/ios/app/singerh/id6753775492)

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

**In-app purchases:** none


## Frequently asked questions

### Is A2A Authenticator free?

A2A Authenticator is free to download, with no in-app purchases.

### Is SINGERH free?

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

### Do A2A Authenticator or SINGERH have ads?

Neither A2A Authenticator nor SINGERH shows ads.

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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.*