# Sailor Planner vs Duty shift

The clearest difference is in-app purchases: Sailor Planner at none against Duty shift's 1. Sailor Planner also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). Duty shift's advantage is update cadence (every 9 days vs every 19 months). On price and ads there is nothing between them.

Both are free to download. Duty shift sells 1 one-off in-app purchase. Sailor Planner asks for nothing beyond the download.

Sailor Planner ships an update every 19 months, Duty shift every 9 days. The most recent releases landed on September 15, 2026 and June 30, 2026 respectively.

## The numbers

| Metric | Sailor Planner | Duty shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duty-shift/id6755762933/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 37 MB | 9 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YCApps UG (haftungsbeschrankt)](https://appshunter.io/developer/1801056318) | [Mateusz Moc](https://appshunter.io/developer/1856182326) |

## What reviewers say

### Sailor Planner

[App page](https://appshunter.io/ios/app/sailor-planner/id6451000647)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duty shift

[App page](https://appshunter.io/ios/app/duty-shift/id6755762933)

Manage your maritime crew's watch schedules and logbook with this assistant app. It automates rotations, tracks GPS positions, and sends timely notifications for watch changes. Personalize crew profiles and export professional documents in the Pro version.

**Highlights:** Smart schedule generation (Fixed or Fair Rotation), Automatic GPS logbook with route history, Watch change notifications, Personalized "That's Me" timer, Crew list with emoji avatars, PDF export of crew lists and agendas (Pro), Voyage file sharing (Pro)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version | $3.99 | one-time |


## Frequently asked questions

### Is Sailor Planner free?

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

### Is Duty shift free?

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

### Do Sailor Planner or Duty shift have ads?

Neither Sailor Planner nor Duty shift shows ads.

### Which is updated more often, Sailor Planner or Duty shift?

Sailor Planner ships an update every 19 months, and Duty shift every 9 days. Most recently, Sailor Planner was updated on September 15, 2026 and Duty shift on June 30, 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.*