# Quail Tools vs Annular Volume Calculator

The clearest difference is price: Quail Tools at Free against Annular Volume Calculator's $0.99. Quail Tools also leads on update cadence (every 5 weeks vs every 13 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Quail Tools is free to download; Annular Volume Calculator 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, Annular Volume Calculator every 13 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Quail Tools | Annular Volume Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/quail-tools/id1279372123/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 13 months |
| Monetization | Free | — |
| Size | 50 MB | 0 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Austin Angelle](https://appshunter.io/developer/1801766276) | [zhandos uakanov](https://appshunter.io/developer/625286817) |

## What reviewers say

### Quail Tools

[App page](https://appshunter.io/ios/app/quail-tools/id1279372123)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Annular Volume Calculator

[App page](https://appshunter.io/ios/app/annular-volume-calculator/id6739466811)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quail Tools free?

Quail Tools is free to download, with no in-app purchases.

### Is Annular Volume Calculator free?

Annular Volume Calculator costs $0.99, with no in-app purchases.

### Do Quail Tools or Annular Volume Calculator have ads?

Neither Quail Tools nor Annular Volume Calculator shows ads.

### Which is updated more often, Quail Tools or Annular Volume Calculator?

Quail Tools ships an update every 5 weeks, and Annular Volume Calculator every 13 months. Most recently, Quail Tools was updated on October 21, 2026 and Annular Volume Calculator on October 14, 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.*