Virtual Flange Slide Rule vs Slug Calculation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Virtual Flange Slide Rule
Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.
- API 6A integral flange data
- Relevant measurements
- Dimensional data access
- Engineering specifications
Read full descriptionHide full description
Valveworks USA presents the Virtual Flange Slide Rule. This application gives you access to all the relevant measurements and dimensional data for the API 6A integral flange.
Slug Calculation
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.
- Slug Volume Calculation
- Slug Weight Calculation
- Streamlined interface
- Practical design
- Safety focused
Read full descriptionHide full description
Enhanced Oilfield Drilling Slug Calculations. - Slug Volume Calculation: Quickly determine the barrels of slug needed to fill a specified length of dry pipe. - Slug Weight Calculation: Easily find the weight of slug necessary for a set volume, ensuring efficient drilling operations. Streamlined. Straightforward. Practical. Safety First!
Screenshots
Verdict
The clearest difference is review sentiment: Virtual Flange Slide Rule at 100% against Slug Calculation's 0%. Virtual Flange Slide Rule also leads on price (Free vs $0.99) and update cadence (every 4 months vs every 39 months). 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
Virtual Flange Slide Rule is free to download; Slug Calculation costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Virtual Flange Slide Rule ships an update every 4 months, Slug Calculation every 39 months. The most recent releases landed on October 23, 2026 and September 21, 2026 respectively.
| Parameter | Virtual Flange Slide Rule | Slug Calculation |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (13 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 13 — better | — |
| Update frequency | Every 4 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | American Certified Equipment, Inc. | zhandos uakanov |
Customer experience
Virtual Flange Slide Rule
Slug Calculation
In-app purchases
Virtual Flange Slide Rule
No in-app purchases
Slug Calculation
No in-app purchases
