# Folder (hidden data) vs Sentinel

The clearest difference is ads: Sentinel at none against Folder (hidden data)'s shown. Sentinel also leads on update cadence (weekly vs every 4 weeks) and iOS requirement (15.1 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Folder (hidden data) sells 1 one-off in-app purchase and Sentinel sells 3 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.

Folder (hidden data) ships an update every 4 weeks, Sentinel weekly. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Folder (hidden data) | 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 | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 43 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Ezequiel Barreto](https://appshunter.io/developer/1522603357) | [Eija Huttunen](https://appshunter.io/developer/1887793867) |

## What reviewers say

### Folder (hidden data)

[App page](https://appshunter.io/ios/app/folder-hidden-data/id1555143299)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel Essential | $24.99 | per month |
| Sentinel Solo | $29.99 | per month |
| Sentinel Pro | $59.99 | per month |


## Frequently asked questions

### Is Folder (hidden data) free?

Folder (hidden data) is free to download, with in-app purchases available.

### Is Sentinel free?

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

### Do Folder (hidden data) or Sentinel have ads?

Folder (hidden data) shows ads; Sentinel does not.

### Which is updated more often, Folder (hidden data) or Sentinel?

Folder (hidden data) ships an update every 4 weeks, and Sentinel weekly. Most recently, Folder (hidden data) was updated on October 11, 2026 and Sentinel on October 25, 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.*