# Drillstring Toolbox vs CentraDesign Lite

The clearest difference is rating: CentraDesign Lite at 5.0 against Drillstring Toolbox's 3.3. CentraDesign Lite also leads on iOS requirement (8.0 vs 14.0). Drillstring Toolbox's advantage is ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

CentraDesign Lite holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Drillstring Toolbox ships an update every 39 months, CentraDesign Lite every 21 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Drillstring Toolbox | CentraDesign Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/centradesign-lite/id1157895841/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 21 months** |
| Monetization | Free | Free |
| Size | 1 MB | 13 MB |
| Requires iOS | 14.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) |

## What reviewers say

### Drillstring Toolbox

[App page](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189)

This utility app calculates drill-stem load capacities based on API connections and sizes. It also provides makeup torque and tensile capacity, as well as tensile and torsion capacities for drill pipe tubes.

**Highlights:** Drill-stem load capacity calculation, API connection selection, Makeup torque calculation, Tensile capacity calculation, Drill pipe tube capacities

**Features:** macOS Compatibility

**In-app purchases:** none


### CentraDesign Lite

[App page](https://appshunter.io/ios/app/centradesign-lite/id1157895841)

This utility app calculates casing standoff and clearance for oil and gas wells. It considers various factors like pipe sizes, inclination, buoyancy, and side force. Users can visualize casing deflection in 2D and 3D.

**Highlights:** Bow spring and rigid centralizer database, Centralizer and casing database, Calculates casing standoff and clearance, Considers buoyancy and side force, 2D and 3D casing deflection view

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Drillstring Toolbox free?

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

### Is CentraDesign Lite free?

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

### Which has better reviews, Drillstring Toolbox or CentraDesign Lite?

CentraDesign Lite is rated higher. Drillstring Toolbox averages 3.3 out of 5 from 3 ratings, while CentraDesign Lite averages 5.0 from 1 ratings.

### Do Drillstring Toolbox or CentraDesign Lite have ads?

Neither Drillstring Toolbox nor CentraDesign Lite shows ads.

### Which is updated more often, Drillstring Toolbox or CentraDesign Lite?

Drillstring Toolbox ships an update every 39 months, and CentraDesign Lite every 21 months. Most recently, Drillstring Toolbox was updated on October 7, 2026 and CentraDesign Lite on October 3, 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.*