# Rest Break Optimizer — Pilot crew rest calculator

> Calculates pilot rest breaks and optimizes crew work schedules. (iPhone/iPad app by SPR Technical Services LLC.)

- Source: https://appshunter.io/ios/app/rest-break-optimizer/id1191095945 (this page in markdown: same URL + `.md`)
- Developer: [SPR Technical Services LLC](https://appshunter.io/developer/953643274)
- Category: Utilities, Travel
- Price: Free
- Rating: 3.00/5 from 8 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: American English
- Released: 2018-02-12
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rest-break-optimizer/id1191095945/reviews.md

## What is Rest Break Optimizer?

Crew Rest Optimizer is a comprehensive application to calculate pilot rest breaks and help crews optimize break and work schedules.

  • Multi break patterns and options are available with just one tap.
  • Only four entries are needed to generate a break schedule.
  • Changes to any input automatically updates the break schedule.
  • Break schedules can be viewed in both a compact textual format and two expanded graphical displays (break & work).
  • The graphical displays provide Window of Circadian Low (WOCL) and on duty time information for each pilot. Use this information to determine an optimum break schedule with the highest quality of rest and lowest on duty fatigue.
 
Key features

Flights (break schedules)
  • Save flights
  • Create a return flight or add the next flight with a swipe
  • Customize Pilot information (Name, WOCL rest time zone, assigned break)
  • Multi break options (LLSS, LSSL, SLLS, SSLL, SLS, Equal)
  • Share PDF of graphical break and work schedules (Email, Airport, etc.)

Airports
 • Built in extensive list of international airports with time zone
  • Add your own airports
  • Save airports as a Favorite

Reference
  • Guide to understanding the science behind inflight rest and fatigue

Help
  • Help on using the application and features with graphics to grasp the concept quickly
	
Settings
  • Customize the program to the way you use it

## Key features

- Multi break pattern options
- Automatic schedule updates
- Compact textual and graphical displays
- Window of Circadian Low (WOCL) information
- Save and share flight schedules
- Extensive airport database

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/rest-break-optimizer/id1191095945/reviews.md

### 1/5 — Unnecessarily complicated

*2021-11-13, version 1.6*

Needs way too much extraneous information to work. City pairs? Date? Who cares.

### 2/5 — Too much information

*2018-11-30, version 1.1*

For me this app is the Windows version of a crew rest app. It’s not intuitive. It’s hard to read. It’s not obvious. First you’ve got to add all your favorite airports. Then you should set up the possible city pairs so it’s easy to program the breaks and get all your FAR 117 rules covered. Already it’s cumbersome. The best apps automatically use UTC time. This doesn’t. 

Ultimately here’s the issue. I don’t want an excel spreadsheet. I want easy to fill boxes with large enough font to read. No one likes FAR 117. I don’t need to see all my sleep cycles. I’ve got a 9:43 minute flight. I just want a break schedule. My flight is 14:53, just give me some simple options. But this app is too much stuff, too small and too hard to find numbers. I appreciate the effort. But the reason the first iPod became so popular was because it was so simple. I tried to get other crews to use this app. In nearly every case I was greater with glassy eyed pilots saying, yeah but this other one is easier. In fact most would do it manually rather than use this. 

In general we pilots want the KISS principle. This app missed the plot.

### 1/5 — Needs a better interface

*2018-07-22, version 1.04*

Some effort was put into this app but the data entry is too complicated. The key pieces of information are number of flight crew, out/on time, and perhaps time back to the flight deck. In the apps I use for rest calculations I just enter a start and end time and number of crew.

Also, typing the numbers in via keyboard would be preferable to the dialing method.

### 5/5 — It’s what I use

*2018-02-13, version 1.0*

Very advanced Crew Rest app. Share and enjoy.

## Frequently asked questions about Rest Break Optimizer

### What is Rest Break Optimizer?

Rest Break Optimizer is a utility application designed to help flight crews calculate optimal rest breaks and manage their work schedules. It provides graphical displays of break and work times, along with crucial circadian low information.

### How does Rest Break Optimizer calculate schedules?

The app requires only four entries to generate a break schedule, offering multiple break patterns like LLSS, LSSL, SLLS, SSLL, SLS, and Equal. Changes to any input automatically update the generated schedule.

### Can I save and share my schedules with Rest Break Optimizer?

Yes, you can save individual flights and create return or subsequent flights with a swipe. The app also allows you to share PDF versions of graphical break and work schedules via email or other methods.

### Does Rest Break Optimizer include airport information?

Yes, it features a built-in, extensive list of international airports with their respective time zones. You can also add your own airports and save them as favorites.

### What kind of information do the graphical displays in Rest Break Optimizer show?

The expanded graphical displays show both break and work times for each pilot. They also provide Window of Circadian Low (WOCL) and on-duty time information, which helps in determining optimal rest quality and fatigue levels.

### Is Rest Break Optimizer available on all devices?

Rest Break Optimizer is currently supported on iPhone, iPad, and iPod devices, indicating compatibility with Apple's iOS ecosystem.

### How often is Rest Break Optimizer updated?

The latest version of Rest Break Optimizer is 1.6, which was last updated on October 27, 2021. This suggests the app receives periodic updates to maintain functionality and compatibility.

### What is the user rating for Rest Break Optimizer?

Rest Break Optimizer has a rating of 3.0 stars based on 8 user ratings. This indicates a mixed reception among its current user base.

## Version history (last 5 releases)

### 1.6 — 2021-10-27

Fixed duration times being truncated in the picker views for Break Start After Takeoff, Break End Before Landing, and Minimum Short Break Duration times in iOS 15

### 1.5 — 2021-09-23

Updated for iOS 15 compatibility

### 1.4 — 2020-04-08

Updated break calculation to minimize times where break start or end times appear off by +/- 1 minutes based on the displayed break duration. This occurs when the total break time available is not evenly divisible by the number of breaks to a whole minute. The application calculates breaks to the second and rounds the displays to the closest minute. This will result in one break being 1 minute less and the other being 1 minute more. Also updated split break increment control for the 4 crew SLS break option to work correctly with the SLS break option

### 1.3 — 2020-01-23

Fix Airport List displays where the Scope filter and List filter were not visible.

### 1.2 — 2019-11-11

Added support for Dark Mode

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## More apps by SPR Technical Services LLC

- [Aerial Dance Festival](https://appshunter.io/ios/app/aerial-dance-festival/id1473295013)

All apps by SPR Technical Services LLC: https://appshunter.io/developer/953643274

## Related topics

[crew rest calculator app](https://appshunter.io/ios/topics/crew-rest-calculator-app)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*