Virtual Flange Slide Rule vs Workstrings
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
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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.
Workstrings
Access and share detailed product specifications for a wide range of tubular goods and specialized joints. Easily search, view, and download spec sheets for items like drill pipe, landing string, and drill collars.
- Search product specifications
- View detailed spec sheets
- Download specification documents
- Share product information
- Browse tubular goods
- Access Worktech Joints specs
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The Workstrings International Spec Sheet finder allows you to search for, view, download, and share specifications for a variety of Workstrings' products including Drill Pipe, Landing String, Heavy Weight Drill Pipe, Drill Collars, Tubing, Completion and Intervention Tubulars, and Worktech Joints
Screenshots
Verdict
The clearest difference is update cadence: Workstrings at every 8 days against Virtual Flange Slide Rule's every 4 months. Workstrings also leads on iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and ratings volume 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.
On the App Store both sit at effectively the same score — 5.0 for Virtual Flange Slide Rule against 5.0 for Workstrings. Both are backed by a comparable volume of ratings — 13 and 14 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Virtual Flange Slide Rule ships an update every 4 months, Workstrings every 8 days. The most recent releases landed on September 14, 2026 and June 10, 2026 respectively.
| Parameter | Virtual Flange Slide Rule | Workstrings |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (13 ratings) | 5.0 (14 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 13 | 14 — better |
| Update frequency | Every 4 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | American Certified Equipment, Inc. | SESI Holdings, Inc. |
Customer experience
Virtual Flange Slide Rule
Workstrings
In-app purchases
Virtual Flange Slide Rule
No in-app purchases
Workstrings
No in-app purchases
