# Drillstring Toolbox vs Sanvean RSS Downlink Timer

The clearest difference is update cadence: Sanvean RSS Downlink Timer at every 10 months against Drillstring Toolbox's every 39 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Drillstring Toolbox ships an update every 39 months, Sanvean RSS Downlink Timer every 10 months. The most recent releases landed on September 5, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Drillstring Toolbox | Sanvean RSS Downlink Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 10 months** |
| Monetization | Free | — |
| Size | 1 MB | 21 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) | [Sanvean Technologies LLC](https://appshunter.io/developer/1651693601) |

## 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


### Sanvean RSS Downlink Timer

[App page](https://appshunter.io/ios/app/sanvean-rss-downlink-timer/id6444031537)

**In-app purchases:** none


## Frequently asked questions

### Is Drillstring Toolbox free?

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

### Is Sanvean RSS Downlink Timer free?

Sanvean RSS Downlink Timer is free to download, with no in-app purchases.

### Do Drillstring Toolbox or Sanvean RSS Downlink Timer have ads?

Neither Drillstring Toolbox nor Sanvean RSS Downlink Timer shows ads.

### Which is updated more often, Drillstring Toolbox or Sanvean RSS Downlink Timer?

Drillstring Toolbox ships an update every 39 months, and Sanvean RSS Downlink Timer every 10 months. Most recently, Drillstring Toolbox was updated on September 5, 2026 and Sanvean RSS Downlink Timer on September 17, 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.*