# Authenticator App © vs IMP

The clearest difference is in-app purchases: IMP at none against Authenticator App ©'s 10. IMP also leads on ads (none vs shown) and iOS requirement (13.0 vs 15). Authenticator App ©'s advantage is device support (5 vs 3). On price and update cadence there is nothing between them.

Both are free to download. Authenticator App © sells 10 in-app purchases, starting at $5.99 per 7 days. IMP asks for nothing beyond the download.

Authenticator App © ships an update every 2 months, IMP every 4 months. The most recent releases landed on September 29, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Authenticator App © | IMP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (631 ratings)](https://appshunter.io/ios/app/authenticator-app/id1662071074/reviews)** | — |
| Number of ratings | **631** | — |
| Positive reviews | 32.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 47 MB |
| Requires iOS | 15 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [IntelliVision limited](https://appshunter.io/developer/1853739780) | [Digital Mobility Inc.](https://appshunter.io/developer/1682120087) |

## What reviewers say

### Authenticator App ©

[App page](https://appshunter.io/ios/app/authenticator-app/id1662071074)

This app generates Time-based One-time Passwords (TOTP) for secure two-factor authentication (2FA) and multi-factor authentication (MFA). It simplifies logins by scanning QR codes and storing encrypted account data, offering backup and sync features.

**Highlights:** Generates Time-based One-time Passwords (TOTP), Supports Two-Factor Authentication (2FA), Supports Multi-Factor Authentication (MFA), QR code scanning for setup, Encrypted data storage, Secure backup and sync, Touch ID/Face ID authorization

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Weekly PRO | $5.99 | per 7 days |
| Authenticator Monthly PRO | $9.99 | per month |
| Authenticator Weekly Plan | $9.99 | per 7 days |
| Authenticator 6-Months PRO | $29.99 | per 6 months |
| Authenticator Yearly Plan - Offer | $29.99 | per year |
| Authenticator Yearly PRO | $39.99 | per year |
| Authenticator Yearly PRO | $39.99 | per year |
| Authenticator Yearly Plan | $49.99 | per year |
| Authenticator Yearly Plan | $49.99 | per year |
| Authenticator Lifetime PRO | $99.99 | one-time |

**What reviewers like**

- 👍 Well-made app
- 🔒 Secure authentication
- 🚀 Quick and efficient

**What reviewers complain about**

- 💰 Expensive subscription
- 🐛 Confusing setup process
- 🤔 Misleading pricing information

**Reported bugs**

- App crashes on launch
- Unable to add accounts
- Subscription issues

**Requested features**

- Free trial option
- Easier integration with other services
- More transparent pricing


### IMP

[App page](https://appshunter.io/ios/app/imp-mps/id6447648093)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App © free?

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

### Is IMP free?

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

### Do Authenticator App © or IMP have ads?

Authenticator App © shows ads; IMP does not.

### Which is updated more often, Authenticator App © or IMP?

Authenticator App © ships an update every 2 months, and IMP every 4 months. Most recently, Authenticator App © was updated on September 29, 2026 and IMP on September 9, 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.*