# Engage LP vs FlightDose

The clearest difference is in-app purchases: Engage LP at none against FlightDose's 1. Engage LP also leads on ads (none vs shown). FlightDose's advantage is update cadence (every 4 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. FlightDose sells 1 one-off in-app purchase. Engage LP asks for nothing beyond the download.

Engage LP ships an update every 2 months, FlightDose every 4 days. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Engage LP | FlightDose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/flightdose/id6759472369/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 142 MB | 14 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 12+ |
| Developer | [City of Litchfield Park](https://appshunter.io/developer/1874451224) | [Apex Technology Group, Inc](https://appshunter.io/developer/1878815891) |

## What reviewers say

### Engage LP

[App page](https://appshunter.io/ios/app/engage-lp/id6758683487)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlightDose

[App page](https://appshunter.io/ios/app/flightdose/id6759472369)

Estimates cosmic radiation exposure during flights using scientific aviation modeling. It calculates dose based on route, altitude, latitude, and solar conditions, presenting clear, data-driven insights into an invisible environmental factor.

**Highlights:** Estimates in-flight radiation dose, CARI-7 based modeling concepts, Accounts for altitude and position, Considers Earth's magnetic field, Supports route and flight estimation, Clear results presentation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remve Ads | $2.99 | one-time |


## Frequently asked questions

### Is Engage LP free?

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

### Is FlightDose free?

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

### Do Engage LP or FlightDose have ads?

FlightDose shows ads; Engage LP does not.

### Which is updated more often, Engage LP or FlightDose?

Engage LP ships an update every 2 months, and FlightDose every 4 days. Most recently, Engage LP was updated on September 9, 2026 and FlightDose on September 20, 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.*