# Oceanodesy vs 3D Interpolation

The clearest difference is review sentiment: Oceanodesy at 73% against 3D Interpolation's 0%. Oceanodesy also leads on price (Free vs $9.99) and update cadence (every 4 weeks vs every 37 months). On ads, in-app purchases and device support there is nothing between them.

Oceanodesy is free to download; 3D Interpolation costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Oceanodesy ships an update every 4 weeks, 3D Interpolation every 37 months. The most recent releases landed on June 5, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Oceanodesy | 3D Interpolation |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/oceanodesy/id513043669/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **72.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 37 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 7 MB |
| Requires iOS | **8.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oceaneering International, Inc.](https://appshunter.io/developer/1262887736) | [Carlos Moura](https://appshunter.io/developer/407501202) |

## 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


### 3D Interpolation

[App page](https://appshunter.io/ios/app/3d-interpolation/id1000298349)

Calculate key directional drilling parameters like TVD, coordinates, and displacement. This tool aids drilling engineers and students in oil well directional drilling by interpolating survey data.

**Highlights:** Calculate TVD, N/S, E/W coordinates, Determine Horizontal Displacement, Calculate Dog-Leg Severity, Measure Build-Up Rate, Calculate Turn Rate, Interpolate parameters between survey stations

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

**In-app purchases:** none


## Frequently asked questions

### Is Oceanodesy free?

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

### Is 3D Interpolation free?

3D Interpolation costs $9.99, with no in-app purchases.

### Do Oceanodesy or 3D Interpolation have ads?

Neither Oceanodesy nor 3D Interpolation shows ads.

### Which is updated more often, Oceanodesy or 3D Interpolation?

Oceanodesy ships an update every 4 weeks, and 3D Interpolation every 37 months. Most recently, Oceanodesy was updated on June 5, 2026 and 3D Interpolation on September 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*