# ArcNFC vs Otter 2FA Authenticator

ArcNFC and Otter 2FA Authenticator 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 | ArcNFC | Otter 2FA Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 14 MB | 40 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [西恩 解](https://appshunter.io/developer/379647143) | [Robin Guinant](https://appshunter.io/developer/1858308656) |

## What reviewers say

### ArcNFC

[App page](https://appshunter.io/ios/app/arcnfc-nfc-tag-read-write-tool/id796319760)

**Features:** macOS Compatibility

**In-app purchases:** none


### Otter 2FA Authenticator

[App page](https://appshunter.io/ios/app/otter-2fa-authenticator/id6809246709)

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

**In-app purchases:** none


## Frequently asked questions

### Is ArcNFC free?

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

### Is Otter 2FA Authenticator free?

Otter 2FA Authenticator is free to download, with no in-app purchases.

### Do ArcNFC or Otter 2FA Authenticator have ads?

Neither ArcNFC nor Otter 2FA Authenticator 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.*