# FredRest vs FlightDose

The clearest difference is rating: FlightDose at 5.0 against FredRest's 4.5. FredRest's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, ratings volume and monetization model there is nothing between them.

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

FlightDose holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

## The numbers

| Metric | FredRest | FlightDose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/fredrest/id1572337064/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/flightdose/id6759472369/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Monetization | Free | Free |
| Size | 1 MB | 14 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Nathan Luksik](https://appshunter.io/developer/1572337066) | [Apex Technology Group, Inc](https://appshunter.io/developer/1878815891) |

## What reviewers say

### FredRest

[App page](https://appshunter.io/ios/app/fredrest/id1572337064)

This app calculates crew rest schedules for pilots based on flight times, transition periods, and the number of rest blocks. It offers options for specifying rest block lengths or ratios for 4-block schedules.

**Highlights:** Input flight start and end times, Calculate transition time, Supports 3 or 4 rest blocks, Specify rest block lengths or ratios, Choose rest block sequences, Generates crew rest schedules

**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 FredRest free?

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

### Is FlightDose free?

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

### Which has better reviews, FredRest or FlightDose?

FlightDose is rated higher. FredRest averages 4.5 out of 5 from 8 ratings, while FlightDose averages 5.0 from 7 ratings.

### Do FredRest or FlightDose have ads?

FlightDose shows ads; FredRest does not.

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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.*