# Quail Tools vs Slug Calculation

The clearest difference is review sentiment: Quail Tools at 100% against Slug Calculation's 0%. Quail Tools also leads on price (Free vs $0.99) and update cadence (every 5 weeks vs every 39 months). On ads and in-app purchases there is nothing between them.

Quail Tools is free to download; Slug Calculation 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, Slug Calculation every 39 months. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Quail Tools | Slug Calculation |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 39 months |
| Monetization | **Free** | Paid |
| Size | 50 MB | 0 MB |
| Requires iOS | **12.0** | 17.0 |
| 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


### Slug Calculation

[App page](https://appshunter.io/ios/app/slug-calculation/id1292361542)

This app provides tools for enhanced oilfield drilling slug calculations. It helps determine the volume of slug needed to fill a pipe length and the weight of slug for a set volume, ensuring efficient operations.

**Highlights:** Slug Volume Calculation, Slug Weight Calculation, Streamlined interface, Practical design, Safety focused

**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 Slug Calculation free?

Slug Calculation costs $0.99, with no in-app purchases.

### Do Quail Tools or Slug Calculation have ads?

Neither Quail Tools nor Slug Calculation shows ads.

### Which is updated more often, Quail Tools or Slug Calculation?

Quail Tools ships an update every 5 weeks, and Slug Calculation every 39 months. Most recently, Quail Tools was updated on June 1, 2026 and Slug Calculation on September 21, 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.*