# OstSeeTiere vs dReservierung

The clearest difference is review sentiment: dReservierung at 83% against OstSeeTiere's 20%. dReservierung also leads on update cadence (every 2 months vs every 6 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

OstSeeTiere ships an update every 6 months, dReservierung every 2 months. The most recent releases landed on June 24, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | OstSeeTiere | dReservierung |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 92 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Emden](https://appshunter.io/developer/761214887) | [Dataport AöR](https://appshunter.io/developer/1287475117) |

## What reviewers say

### OstSeeTiere

[App page](https://appshunter.io/ios/app/ostseetiere/id943239243)

Report sightings and strandings of Baltic Sea marine mammals, including porpoises and seals. All submitted data is publicly displayed on an interactive map and scientifically analyzed to aid conservation efforts and research.

**Highlights:** Report marine mammal sightings, Report marine mammal strandings, Interactive map of sightings, Scientific data analysis, Supports conservation efforts, Information on porpoises and seals

**Features:** macOS Compatibility

**In-app purchases:** none


### dReservierung

[App page](https://appshunter.io/ios/app/dreservierung/id1551341421)

Organize and book company resources like workstations, meeting rooms, and vehicles in real-time. View all your bookings on a dashboard and easily cancel or add resources to your favorites for quick access.

**Highlights:** Real-time resource booking, Dashboard for all bookings, Cancel bookings easily, Add resources to favorites, Filter resources by needs, View resource details and availability

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OstSeeTiere free?

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

### Is dReservierung free?

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

### Do OstSeeTiere or dReservierung have ads?

Neither OstSeeTiere nor dReservierung shows ads.

### Which is updated more often, OstSeeTiere or dReservierung?

OstSeeTiere ships an update every 6 months, and dReservierung every 2 months. Most recently, OstSeeTiere was updated on June 24, 2026 and dReservierung on September 24, 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.*