FZ SIide Rule vs Workstrings
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FZ SIide Rule
This application provides a digital slide rule for finding critical dimensions of high-pressure wellhead equipment, including integral flange and ring groove measurements. It functions like a traditional paper slide rule, offering convenience and accessibility for users needing these specific engineering calculations.
- Integral flange dimensions
- Ring groove dimensions
- R Type ring gasket calculations
- Pocket-sized slide rule functionality
- High-pressure wellhead equipment data
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This app will allow the user to find all critical dimensions of high pressure wellhead equipment integral flange and ring groove dimensions. A modern update of the classic slide rule. Operates the same way a typical paper flange slide rule works now available in your pocket anytime anywhere. The app includes slide rules for Integral Flanges Ring Grooves R Type Ring Gaskets
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 rating: Workstrings at 5.0 against FZ SIide Rule's 1.0. Workstrings also leads on ratings volume (14 vs 1). FZ SIide Rule's advantage is iOS requirement (9.0 vs 13.0). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Workstrings holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Workstrings has 14 ratings behind it against 1, so its average is the more settled of the two.
FZ SIide Rule ships an update fortnightly, Workstrings every 8 days. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.
| Parameter | FZ SIide Rule | Workstrings |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (14 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 14 — better |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 11 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | D Young | SESI Holdings, Inc. |
Customer experience
FZ SIide Rule
Workstrings
In-app purchases
FZ SIide Rule
No in-app purchases
Workstrings
No in-app purchases
Questions
Is FZ SIide Rule free?
Is Workstrings free?
Which has better reviews, FZ SIide Rule or Workstrings?
Do FZ SIide Rule or Workstrings have ads?
Which is updated more often, FZ SIide Rule or Workstrings?
Other comparisons
