# IOTExplorer vs Sentinel

The clearest difference is in-app purchases: IOTExplorer at none against Sentinel's 2. IOTExplorer also leads on update cadence (daily vs weekly). Sentinel's advantage is iOS requirement (15.1 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. Sentinel sells 2 in-app purchases, starting at $29.99 per month. IOTExplorer asks for nothing beyond the download.

IOTExplorer ships an update daily, Sentinel weekly. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | IOTExplorer | 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 | **Daily** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 43 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Angel Oberto](https://appshunter.io/developer/1803041630) | [Eija Huttunen](https://appshunter.io/developer/1887793867) |

## What reviewers say

### IOTExplorer

[App page](https://appshunter.io/ios/app/iotexplorer/id6758913155)

**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 Solo | $29.99 | per month |
| Sentinel Pro | $79.99 | per month |


## Frequently asked questions

### Is IOTExplorer free?

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

### Is Sentinel free?

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

### Do IOTExplorer or Sentinel have ads?

Neither IOTExplorer nor Sentinel shows ads.

### Which is updated more often, IOTExplorer or Sentinel?

IOTExplorer ships an update daily, and Sentinel weekly. Most recently, IOTExplorer was updated on October 1, 2026 and Sentinel on October 14, 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.*