# OSNT.io vs Sentinel

The clearest difference is in-app purchases: OSNT.io at none against Sentinel's 2. OSNT.io also leads on update cadence (every 4 days vs every 9 days). Sentinel's advantage is iOS requirement (15.1 vs 26.0). 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. OSNT.io asks for nothing beyond the download.

OSNT.io ships an update every 4 days, Sentinel every 9 days. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OSNT.io | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Size | 2 MB | 39 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Ryan Nacker](https://appshunter.io/developer/1305387838) | [Eija Huttunen](https://appshunter.io/developer/1887793867) |

## What reviewers say

### OSNT.io

[App page](https://appshunter.io/ios/app/osntio-global-intelligence/id6759848785)

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

**In-app purchases:** none


### Sentinel

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

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel Solo | $29.99 | per month |
| Sentinel Pro | $79.99 | per month |


## Frequently asked questions

### Is OSNT.io free?

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

### Is Sentinel free?

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

### Do OSNT.io or Sentinel have ads?

Neither OSNT.io nor Sentinel shows ads.

### Which is updated more often, OSNT.io or Sentinel?

OSNT.io ships an update every 4 days, and Sentinel every 9 days. Most recently, OSNT.io was updated on September 21, 2026 and Sentinel on September 10, 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.*