# Authenticator vs InstAddr

The clearest difference is rating: InstAddr at 4.5 against Authenticator's 3.7. InstAddr also leads on review sentiment (86% vs 68%) and update cadence (monthly vs every 2 months). Authenticator's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. InstAddr sells 2 in-app purchases, starting at $1.49 per month. Authenticator asks for nothing beyond the download.

InstAddr holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 407 and 956 respectively. Written reviews point the same way: 68% of Authenticator's written reviews are positive against 86% of InstAddr's.

Authenticator ships an update every 2 months, InstAddr monthly. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Authenticator | InstAddr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (407 ratings)](https://appshunter.io/ios/app/authenticator/id766157276/reviews) | **[4.5 (956 ratings)](https://appshunter.io/ios/app/instaddr/id806157957/reviews)** |
| Number of ratings | 407 | **956** |
| Positive reviews | 67.6% of reviews | **86.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 27 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matt Rubin](https://appshunter.io/developer/766157279) | [Aki Ueno](https://appshunter.io/developer/717956926) |

## What reviewers say

### Authenticator

[App page](https://appshunter.io/ios/app/authenticator/id766157276)

This app provides a secure and straightforward way to protect your online accounts. It generates one-time passwords that, when combined with your regular password, significantly enhance your account security. The app operates offline, ensuring your sensitive data remains on your device.

**Highlights:** Generates one-time passwords, QR code setup, Encrypted data storage, Time-based and counter-based OTP support, Offline operation

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple and easy to use
- 🔒 Secure, no cloud backup
- 👍 Clean and intuitive UI
- 💡 Open-source and transparent

**What reviewers complain about**

- 🐛 Tokens easily deleted by accident
- 🔒 No backup/transfer options for tokens
- 🔒 Locked out when changing devices
- 🐛 Codes not working after app updates

**Reported bugs**

- Blank screen on iOS 26 upgrade
- Codes not working on new devices
- Unable to log in to accounts after token loss

**Requested features**

- Add biometric lock (Touch ID/Face ID)
- Ability to export/backup tokens
- Companion Apple Watch app
- Folder/tag organization for accounts


### InstAddr

[App page](https://appshunter.io/ios/app/instaddr/id806157957)

Create and manage multiple disposable email addresses for free. Use them for various purposes without worrying about spam or privacy. Addresses are permanent and can be accessed across devices.

**Highlights:** Create unlimited disposable email addresses, Permanent email addresses, Send, reply, and forward emails, Push notifications for new messages, Sync across PC and smartphones, Supports HTML mail and attachments, Built-in mailer functions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan (1 Month) | $1.49 | per month |
| Premium Plan (1 Year) | $7.99 | per year |

**What reviewers like**

- 🚀 Fast and efficient
- 🔒 Secure and private
- 👍 Convenient and easy to use
- 💡 Customizable email addresses
- 👍 Reliable service

**What reviewers complain about**

- 🐛 Connectivity issues and server problems
- 🐛 Inability to receive verification codes
- 🐛 Emails not being delivered
- 🐛 Unreliable performance

**Reported bugs**

- Server connectivity problems
- Inability to receive verification codes
- Emails not being delivered

**Requested features**

- Add more email domain options
- Improve integration with native email apps
- Implement a login system to save email accounts
- Provide better support and communication


## Frequently asked questions

### Is Authenticator free?

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

### Is InstAddr free?

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

### Which has better reviews, Authenticator or InstAddr?

InstAddr is rated higher. Authenticator averages 3.7 out of 5 from 407 ratings, while InstAddr averages 4.5 from 956 ratings.

### Do Authenticator or InstAddr have ads?

InstAddr shows ads; Authenticator does not.

### Which is updated more often, Authenticator or InstAddr?

Authenticator ships an update every 2 months, and InstAddr monthly. Most recently, Authenticator was updated on September 22, 2026 and InstAddr on September 26, 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.*