# TOTP Authenticator vs E

The clearest difference is in-app purchases: E at none against TOTP Authenticator's 4. TOTP Authenticator's advantage is review sentiment (65% vs 40%) and device support (5 vs 3). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. TOTP Authenticator sells 4 in-app purchases, starting at $5.99 per 7 days. E asks for nothing beyond the download.

TOTP Authenticator ships an update every 9 days, E every 8 days. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | TOTP Authenticator | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (167 ratings)](https://appshunter.io/ios/app/totp-authenticator/id1625641322/reviews)** | — |
| Number of ratings | **167** | — |
| Positive reviews | **65.3% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 195 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sparrow Code LTD](https://appshunter.io/developer/1617623165) | [Alexandr Makhnovskiy](https://appshunter.io/developer/1607257690) |

## What reviewers say

### TOTP Authenticator

[App page](https://appshunter.io/ios/app/totp-authenticator/id1625641322)

This app generates time-based one-time passwords (TOTP) for enhanced account security. It supports two-factor authentication (2FA) by providing 6-digit codes required by many websites and services for login. The app includes extensive tutorials to guide users through setting up 2FA with various platforms.

**Highlights:** Generates 6-digit TOTP codes, Supports two-factor authentication (2FA), QR code scanning for setup, Manual secret key entry, Over 100 step-by-step setup tutorials, Privacy focused

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TOTP OTP Codes (1 week) | $5.99 | per 7 days |
| TOTP OTP Codes (1 month) | $9.99 | per month |
| TOTP OTP Codes (1 year) | $59.99 | per year |
| Unlimited TOTP OTP Codes | $79.99 | one-time |


### E

[App page](https://appshunter.io/ios/app/e-passport-mobile/id6758136708)

This app provides robust two-factor and multi-factor authentication for corporate accounts. It ensures enhanced security for various systems integrated with a corporate authentication platform. Requires a compatible E-passport API system for operation.

**Highlights:** Two-factor authentication, Multi-factor authentication, Corporate account security, Enhanced login protection, Integration with E-passport API

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

**In-app purchases:** none


## Frequently asked questions

### Is TOTP Authenticator free?

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

### Is E free?

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

### Do TOTP Authenticator or E have ads?

Neither TOTP Authenticator nor E shows ads.

### Which is updated more often, TOTP Authenticator or E?

TOTP Authenticator ships an update every 9 days, and E every 8 days. Most recently, TOTP Authenticator was updated on September 22, 2026 and E on September 21, 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.*