# FRMSc Survey vs Crew Roster

The clearest difference is in-app purchases: FRMSc Survey at none against Crew Roster's 2. FRMSc Survey also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Crew Roster's advantage is update cadence (every 4 days vs fortnightly). On price and ads there is nothing between them.

Both are free to download. Crew Roster sells 2 in-app purchases, starting at $3.99 per month. FRMSc Survey asks for nothing beyond the download.

FRMSc Survey ships an update fortnightly, Crew Roster every 4 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FRMSc Survey | Crew Roster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 21 MB | 79 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fatigue Risk Management Science Limited](https://appshunter.io/developer/1372553285) | [KRZYSZTOF SZYTKO](https://appshunter.io/developer/1728669891) |

## What reviewers say

### FRMSc Survey

[App page](https://appshunter.io/ios/app/frmsc-survey/id1562860877)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crew Roster

[App page](https://appshunter.io/ios/app/crew-roster/id6477186682)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly access | $3.99 | per month |
| Annual Access (Save 17%) | $39.99 | per year |


## Frequently asked questions

### Is FRMSc Survey free?

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

### Is Crew Roster free?

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

### Do FRMSc Survey or Crew Roster have ads?

Neither FRMSc Survey nor Crew Roster shows ads.

### Which is updated more often, FRMSc Survey or Crew Roster?

FRMSc Survey ships an update fortnightly, and Crew Roster every 4 days. Most recently, FRMSc Survey was updated on October 27, 2026 and Crew Roster on October 25, 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.*