# 2FA TOTP Authenticator vs ECHO Survival AI

The clearest difference is price: ECHO Survival AI at Free against 2FA TOTP Authenticator's $0.99. ECHO Survival AI also leads on iOS requirement (17.0 vs 26.0). 2FA TOTP Authenticator's advantage is in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 3 months). On ads there is nothing between them.

ECHO Survival AI is free to download; 2FA TOTP Authenticator costs $0.99 up front. ECHO Survival AI sells 2 one-off in-app purchases. 2FA TOTP Authenticator asks for nothing beyond the download.

2FA TOTP Authenticator ships an update every 5 weeks, ECHO Survival AI every 3 months. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 2FA TOTP Authenticator | ECHO Survival AI |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Size | 15 MB | 97 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [捷 凌](https://appshunter.io/developer/1509023962) | [ehsan azish](https://appshunter.io/developer/1622575303) |

## What reviewers say

### 2FA TOTP Authenticator

[App page](https://appshunter.io/ios/app/2fa-totp-authenticator-widget/id1509275023)

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

**In-app purchases:** none


### ECHO Survival AI

[App page](https://appshunter.io/ios/app/echo-survival-ai/id6756616533)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock offline use forever | $12.99 | one-time |
| Full version | $12.99 | one-time |


## Frequently asked questions

### Is 2FA TOTP Authenticator free?

2FA TOTP Authenticator costs $0.99, with no in-app purchases.

### Is ECHO Survival AI free?

ECHO Survival AI is free to download, with in-app purchases available.

### Do 2FA TOTP Authenticator or ECHO Survival AI have ads?

Neither 2FA TOTP Authenticator nor ECHO Survival AI shows ads.

### Which is updated more often, 2FA TOTP Authenticator or ECHO Survival AI?

2FA TOTP Authenticator ships an update every 5 weeks, and ECHO Survival AI every 3 months. Most recently, 2FA TOTP Authenticator was updated on October 19, 2026 and ECHO Survival AI on October 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.*