# ISN Sentinel vs Cloud Authenticator

The clearest difference is in-app purchases: ISN Sentinel at none against Cloud Authenticator's 10. ISN Sentinel also leads on iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cloud Authenticator sells 9 in-app purchases, starting at $9.99 per month. ISN Sentinel asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ISN Sentinel | Cloud Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | — | Subscription |
| Size | 7 MB | 90 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleut Community of St. Paul Island Tribal Government](https://appshunter.io/developer/1329178887) | [DEVSIG TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1650077948) |

## What reviewers say

### ISN Sentinel

[App page](https://appshunter.io/ios/app/isn-sentinel/id1329189735)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cloud Authenticator

[App page](https://appshunter.io/ios/app/cloud-authenticator-mfa-and-2fa/id6443858715)

This app generates two-step verification codes for enhanced online account security. It offers encrypted cloud backups, multi-device synchronization, and offline access to your authentication tokens.

**Highlights:** Generate 2-Step Verification codes, TOTP and HMAC support, Encrypted cloud backups, Multi-device synchronization, Offline token generation, Supports thousands of accounts

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $9.99 | per month |
| Monthly premium | $9.99 | per month |
| Yearly Premium | $49.99 | per year |
| Yearly premium | $49.99 | per year |
| Ad-Free Experience | $3.99 | one-time |
| Upgrade To Premium | $10.99 | one-time |
| Upgrade To Premium | $12.99 | one-time |
| Upgrade To Premium Gold Badge | $29.99 | one-time |
| Upgrade To Premium Gold Badge | $33.99 | one-time |


## Frequently asked questions

### Is ISN Sentinel free?

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

### Is Cloud Authenticator free?

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

### Do ISN Sentinel or Cloud Authenticator have ads?

Neither ISN Sentinel nor Cloud Authenticator shows ads.

### Which is updated more often, ISN Sentinel or Cloud Authenticator?

ISN Sentinel ships an update every 5 months, and Cloud Authenticator every 5 months. Most recently, ISN Sentinel was updated on October 8, 2026 and Cloud Authenticator on September 30, 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.*