# 3D Interpolation vs Drillstring Toolbox Premium

The clearest difference is price: 3D Interpolation at $9.99 against Drillstring Toolbox Premium's $24.99. 3D Interpolation also leads on iOS requirement (12.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

3D Interpolation costs $9.99 and Drillstring Toolbox Premium $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

3D Interpolation ships an update every 37 months, Drillstring Toolbox Premium every 24 months. The most recent releases landed on September 2, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 3D Interpolation | Drillstring Toolbox Premium |
| --- | --- | --- |
| Price | **$9.99** | $24.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 24 months** |
| Monetization | Paid | — |
| Size | 7 MB | 1 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) |

## What reviewers say

### 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


### Drillstring Toolbox Premium

[App page](https://appshunter.io/ios/app/drillstring-toolbox-premium/id1222651738)

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D Interpolation free?

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

### Is Drillstring Toolbox Premium free?

Drillstring Toolbox Premium costs $24.99, with no in-app purchases.

### Do 3D Interpolation or Drillstring Toolbox Premium have ads?

Neither 3D Interpolation nor Drillstring Toolbox Premium shows ads.

### Which is updated more often, 3D Interpolation or Drillstring Toolbox Premium?

3D Interpolation ships an update every 37 months, and Drillstring Toolbox Premium every 24 months. Most recently, 3D Interpolation was updated on September 2, 2026 and Drillstring Toolbox Premium on September 20, 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.*