Quail Tools vs Drill Collar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quail Tools
Access essential specifications for Tubulars, BOPs, and API Casing offline. View detailed data like tool joint OD, make-up torque, and pressure ratings. Share spec sheets when an internet connection is available.
- Offline access to Tubular and BOP specs
- API Casing General Information table
- Detailed spec sheets for equipment
- Shareable spec sheets (online)
- Save spec sheets to device
- Tool joint OD, ID, torque, tensile
- BOP pressure rating, bonnet type, operating data
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The app allows users to select Tubulars or BOPS to view specs. Users will also have access to our newly added API Casing General Information table. The initial page will allow the user to select between three sections of the app: Tubulars, BOPs, or Casing. Upon selecting "Tubulars" or "BOPs, the user will be presented with a built in table that contains essential information. Therefore, it does not require an internet connection to function! This will allow for constant, unhindered access to tubular and BOP information such as: tool joint OD, tool joint ID, max make up torque, premium tensile, BOP height, BOP weight, BOP pressure rating, BOP bonnet type, BOP operating data, and BOP shear testing videos. Upon selecting the "API Casing - General Information" button, the user will have access to a built in table containing standard API casing information. You can now view essential specs in areas where there is little or no cell phone reception. When selecting "Tubulars" or "BOPs", simply tap the item to view the spec sheet. This retrieves the spec sheet from our website, which can be shared using the button on the top right. (Please note: this function does require an internet connection). From there, the spec sheet can also be saved to your phone, or any handled via another app. We hope you enjoy this app as much as we have. Please feel free to provide feedback via the contact us button in the app.
Drill Collar
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Drill Collar app is database of Ideal Drill Collar Range. When select Open Hole Size, the app will show below data: - CASING SIZE TO BE RUN, inch - IDEIAL DRILL COLLAR RANGE, inch - API DRILL COLLAR SIZES WHICH FALL IN THE IDEAL RANGE, inch The minimum size drill-collar is calculated from the Lubinski and Hock equation. Easy. Simple. Useful. Work Safe!
Screenshots
Verdict
The clearest difference is price: Quail Tools at Free against Drill Collar's $0.99. Quail Tools also leads on update cadence (every 5 weeks vs every 36 months) and device support (3 vs 1). On 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
Quail Tools is free to download; Drill Collar costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quail Tools ships an update every 5 weeks, Drill Collar every 36 months. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.
| Parameter | Quail Tools | Drill Collar |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (22 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 22 — better | — |
| Update frequency | Every 5 weeks — better | Every 36 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 50 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Austin Angelle | zhandos uakanov |
In-app purchases
Quail Tools
No in-app purchases
Drill Collar
No in-app purchases







