# Comsign Authenticator vs Alertro SMART ENS

The clearest difference is update cadence: Alertro SMART ENS at weekly against Comsign Authenticator's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Comsign Authenticator ships an update every 4 months, Alertro SMART ENS weekly. The most recent releases landed on September 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Comsign Authenticator | Alertro SMART ENS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 39 MB | 140 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Comsign Ltd.](https://appshunter.io/developer/1438606872) | [Alertro LTD](https://appshunter.io/developer/1773107369) |

## What reviewers say

### Comsign Authenticator

[App page](https://appshunter.io/ios/app/comsign-authenticator/id1438606873)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alertro SMART ENS

[App page](https://appshunter.io/ios/app/alertro-smart-ens/id6739887825)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Comsign Authenticator free?

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

### Is Alertro SMART ENS free?

Alertro SMART ENS is free to download, with no in-app purchases.

### Do Comsign Authenticator or Alertro SMART ENS have ads?

Neither Comsign Authenticator nor Alertro SMART ENS shows ads.

### Which is updated more often, Comsign Authenticator or Alertro SMART ENS?

Comsign Authenticator ships an update every 4 months, and Alertro SMART ENS weekly. Most recently, Comsign Authenticator was updated on September 23, 2026 and Alertro SMART ENS on October 7, 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.*