Hole Volumes vs Drillstring Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hole Volumes
This app calculates various oilfield volumes, including hole, annular, tubing, and displacement. Users input depth, casing, and tubing sizes to get quick results. It supports both metric and standard units and allows for custom pipe sizes.
- Calculate hole volumes
- Calculate annular volumes
- Calculate tubing volumes
- Calculate displacement volumes
- Supports metric and standard units
- Custom pipe size entry
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Oilfield Tubing Volumes allows you to easily calculate hole, annular, tubing, and displacement volumes. Just enter the depth, casing, and tubing size and the app will do the rest! -Made specifically for oilfield/service rig applications. -Easily figure out hole volumes by putting in the hole depth and selecting the pipe and casing size. -Change from metric to standard depths and sizes -Enter custom pipe sizes *These numbers will be very close, but due to pipe weights and make, volumes may be slightly off.
Drillstring Toolbox
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.
- Drill-stem load capacity calculation
- API connection selection
- Makeup torque calculation
- Tensile capacity calculation
- Drill pipe tube capacities
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Drillstring Toolbox is a free calculator from Standard DS-1 that gives you the drill-stem load capacities you need! You can choose an API connection (along with the size you're interested in) to find its recommended makeup torque and tensile capacity. Tap the "Tube" tab to find the tensile and torsion capacities for drill pipe tubes as well!
Screenshots
Verdict
The clearest difference is review sentiment: Drillstring Toolbox at 100% against Hole Volumes's 0%. Drillstring Toolbox also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). Hole Volumes's advantage is rating (4.0 vs 3.3) and update cadence (every 5 months vs every 39 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Hole Volumes holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 0% of Hole Volumes's written reviews are positive against 100% of Drillstring Toolbox's, so the app with the better star average is not the one people write more warmly about.
Hole Volumes ships an update every 5 months, Drillstring Toolbox every 39 months. The most recent releases landed on September 14, 2026 and September 5, 2026 respectively.
| Parameter | Hole Volumes | Drillstring Toolbox |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | 3.3 (3 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | Every 5 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ash Point Ltd. | Bureau Veritas North America, Inc. |
Customer experience
Hole Volumes
Drillstring Toolbox
In-app purchases
Hole Volumes
No in-app purchases
Drillstring Toolbox
No in-app purchases
Questions
Is Hole Volumes free?
Is Drillstring Toolbox free?
Which has better reviews, Hole Volumes or Drillstring Toolbox?
Do Hole Volumes or Drillstring Toolbox have ads?
Which is updated more often, Hole Volumes or Drillstring Toolbox?
Other comparisons
