# Oceanodesy vs DTR v2

The clearest difference is price: Oceanodesy at Free against DTR v2's $17.99. Oceanodesy also leads on iOS requirement (8.1 vs 12.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

Oceanodesy is free to download; DTR v2 costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Oceanodesy ships an update every 4 weeks, DTR v2 monthly. The most recent releases landed on June 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Oceanodesy | DTR v2 |
| --- | --- | --- |
| Price | **Free** | $17.99 |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/oceanodesy/id513043669/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Free | — |
| Size | 5 MB | 57 MB |
| Requires iOS | **8.1** | 12.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oceaneering International, Inc.](https://appshunter.io/developer/1262887736) | [Superior Shooting System, LLC](https://appshunter.io/developer/1733021815) |

## What reviewers say

### Oceanodesy

[App page](https://appshunter.io/ios/app/oceanodesy/id513043669)

This utility app converts between geodetic and grid coordinate systems. It supports various units for latitude, longitude, and grid coordinates, along with multiple datums and projections for accurate geospatial transformations.

**Highlights:** Geodetic to grid coordinate conversion, Grid to geodetic coordinate conversion, Multiple latitude/longitude formats (DD, DMM, DMS), Multiple grid coordinate units (US Feet, Intl Feet, Meters), Support for multiple datums (WGS84, NAD27, NAD83, etc.), Support for multiple projections (UTM, SPCS27, SPCS83), Store and export projected coordinates

**Features:** macOS Compatibility

**In-app purchases:** none


### DTR v2

[App page](https://appshunter.io/ios/app/dtr-v2/id6480346108)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Oceanodesy free?

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

### Is DTR v2 free?

DTR v2 costs $17.99, with no in-app purchases.

### Do Oceanodesy or DTR v2 have ads?

Neither Oceanodesy nor DTR v2 shows ads.

### Which is updated more often, Oceanodesy or DTR v2?

Oceanodesy ships an update every 4 weeks, and DTR v2 monthly. Most recently, Oceanodesy was updated on June 5, 2026 and DTR v2 on September 9, 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.*