# IP Inbound vs Sentinel

The clearest difference is in-app purchases: IP Inbound at none against Sentinel's 1. IP Inbound also leads on ads (none vs shown) and device support (3 vs 1). Sentinel's advantage is iOS requirement (18.6 vs 26.0). On price and update cadence there is nothing between them.

Both are free to download. Sentinel sells 1 one-off in-app purchase. IP Inbound asks for nothing beyond the download.

IP Inbound ships an update every 3 weeks, Sentinel every 4 weeks. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | IP Inbound | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ip-inbound/id6745743691/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 30 MB | 12 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Morgan](https://appshunter.io/developer/788467418) | [ALI EMIR CIHAN](https://appshunter.io/developer/1850444654) |

## What reviewers say

### IP Inbound

[App page](https://appshunter.io/ios/app/ip-inbound/id6745743691)

This app assists pilots in achieving precise time-on-target for critical flight maneuvers. It calculates optimal run-in speeds and provides guidance for maintaining exact arrival times at designated locations, crucial for coordinated events or performance evaluations.

**Highlights:** Precise target coordinate entry, IP bearing and distance selection, Desired ground speed input, Time on target (TOT) calculation, Pre-IP lateral guidance, Post-IP lateral guidance, Automatic turning time inclusion

**Features:** Apple Watch app

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-wifi-network-scanner/id6760856503)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel Pro (Ömür Boyu) | $9.99 | one-time |


## Frequently asked questions

### Is IP Inbound free?

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

### Is Sentinel free?

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

### Do IP Inbound or Sentinel have ads?

Sentinel shows ads; IP Inbound does not.

### Which is updated more often, IP Inbound or Sentinel?

IP Inbound ships an update every 3 weeks, and Sentinel every 4 weeks. Most recently, IP Inbound was updated on October 15, 2026 and Sentinel on October 8, 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.*