# Authenticator vs Sign documents Fast & Secure

Authenticator and Sign documents Fast & Secure are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence 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. Authenticator sells 3 in-app purchases, starting at $6.99 per 7 days and Sign documents Fast & Secure sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Authenticator against 5.0 for Sign documents Fast & Secure. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Authenticator ships an update every 5 weeks, Sign documents Fast & Secure monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Authenticator | Sign documents Fast & Secure |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/authenticator-mfa-auth-and-totp/id6756618123/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sign-documents-fast-and-secure/id6768265137/reviews) |
| Number of ratings | **4** | 2 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 38 MB | 28 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ditlev Carlsen](https://appshunter.io/developer/1861832011) | [UPPER UNIT Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/1896555201) |

## What reviewers say

### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-mfa-auth-and-totp/id6756618123)

This app generates one-time passwords (OTPs) to add an extra layer of security to your online accounts. It supports time-based OTPs for various popular services and offers quick setup via QR code scanning. Designed for privacy and security, it helps protect your data from unauthorized access.

**Highlights:** Generates secure TOTP codes, Supports major platforms and services, Quick setup with QR code scanning, Offline code generation, Clean and simple interface, Privacy and security focused

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Monthly | $19.99 | per month |
| Yearly | $49.99 | per year |


### Sign documents Fast & Secure

[App page](https://appshunter.io/ios/app/sign-documents-fast-and-secure/id6768265137)

Easily create, sign, and store important documents directly on your device. Import files from various sources, customize your signature, and securely share your signed documents via multiple platforms. All your signed paperwork is kept private and accessible locally.

**Highlights:** Create and sign documents instantly, Import documents via camera, gallery, or file manager, Customizable signature styles, Local document storage and archive, Securely export and share signed documents, Privacy-focused, data stays on device

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock full access | $5.99 | per 7 days |
| Fast & Secure Sign Pro | $5.99 | per 7 days |


## Frequently asked questions

### Is Authenticator free?

Authenticator is free to download, with in-app purchases available.

### Is Sign documents Fast & Secure free?

Sign documents Fast & Secure is free to download, with in-app purchases available.

### Which has better reviews, Authenticator or Sign documents Fast & Secure?

Authenticator and Sign documents Fast & Secure are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Authenticator or Sign documents Fast & Secure have ads?

Neither Authenticator nor Sign documents Fast & Secure shows ads.

### Which is updated more often, Authenticator or Sign documents Fast & Secure?

Authenticator ships an update every 5 weeks, and Sign documents Fast & Secure monthly. Most recently, Authenticator was updated on November 5, 2026 and Sign documents Fast & Secure on October 31, 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.*