# Crew Rest Calculator vs Smart Step Users

The clearest difference is update cadence: Smart Step Users at every 2 months against Crew Rest Calculator's every 5 months. Smart Step Users also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Crew Rest Calculator ships an update every 5 months, Smart Step Users every 2 months. The most recent releases landed on June 5, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Crew Rest Calculator | Smart Step Users |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/crew-rest-calculator/id1662243748/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 30 MB | 49 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [WILL3D](https://appshunter.io/developer/1662243750) | [SMART STYB LLTJARH WALDYAFH WALKHDMAT](https://appshunter.io/developer/1764846589) |

## What reviewers say

### Crew Rest Calculator

[App page](https://appshunter.io/ios/app/crew-rest-calculator/id1662243748)

Instantly calculate fair and exact rest periods for flight crews using Zulu time. This app handles standard and complex shift rotations, ensuring no crew member's break is cut short. It offers smart time parsing and organizational tools with alerts.

**Highlights:** Calculate shift rotations in Zulu time, Easy and Advanced calculation modes, Fair rest time distribution, Smart Zulu time parsing (HH:MM, HHMM, HMM), Assign names to rest slots, Vibration and notification alerts

**In-app purchases:** none


### Smart Step Users

[App page](https://appshunter.io/ios/app/smart-step-users/id6667094677)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crew Rest Calculator free?

Crew Rest Calculator is free to download, with no in-app purchases.

### Is Smart Step Users free?

Smart Step Users is free to download, with no in-app purchases.

### Do Crew Rest Calculator or Smart Step Users have ads?

Neither Crew Rest Calculator nor Smart Step Users shows ads.

### Which is updated more often, Crew Rest Calculator or Smart Step Users?

Crew Rest Calculator ships an update every 5 months, and Smart Step Users every 2 months. Most recently, Crew Rest Calculator was updated on June 5, 2026 and Smart Step Users on September 7, 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.*