# Ferret OSINT vs Sentinel

The clearest difference is in-app purchases: Ferret OSINT at none against Sentinel's 2. Sentinel's advantage is update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sentinel sells 2 in-app purchases, starting at $24.99 per month. Ferret OSINT asks for nothing beyond the download.

Ferret OSINT ships an update every 3 months, Sentinel weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Ferret OSINT | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/sentinel-field-intelligence/id6761101801/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 43 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Konstantin Shvetsov](https://appshunter.io/developer/1882517293) | [Eija Huttunen](https://appshunter.io/developer/1887793867) |

## What reviewers say

### Ferret OSINT

[App page](https://appshunter.io/ios/app/ferret-osint/id6760048642)

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

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-field-intelligence/id6761101801)

An AI-assisted platform for investigators and security professionals to gather, verify, and structure intelligence from public and government sources. It helps identify confirmed findings, uncertainties, and next verification steps.

**Highlights:** AI-assisted intelligence gathering, Public and government source research, Automated wanted and sanctions screening, Entity resolution and image forensics, Case management and field notes, Professional reporting with branding

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel Essential | $24.99 | per month |
| Sentinel Pro | $59.99 | per month |


## Frequently asked questions

### Is Ferret OSINT free?

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

### Is Sentinel free?

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

### Do Ferret OSINT or Sentinel have ads?

Neither Ferret OSINT nor Sentinel shows ads.

### Which is updated more often, Ferret OSINT or Sentinel?

Ferret OSINT ships an update every 3 months, and Sentinel weekly. Most recently, Ferret OSINT was updated on October 31, 2026 and Sentinel on October 31, 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.*