# Flange Bolt Size & Torque vs Workstrings

The clearest difference is in-app purchases: Workstrings at none against Flange Bolt Size & Torque's 2. Workstrings also leads on review sentiment (100% vs 65%) and rating (5.0 vs 4.6). Flange Bolt Size & Torque's advantage is ratings volume (363 vs 14). On price, ads and device support there is nothing between them.

Both are free to download. Flange Bolt Size & Torque sells 2 in-app purchases, starting at $4.99 per 3 months. Workstrings asks for nothing beyond the download.

Workstrings holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Flange Bolt Size & Torque has 363 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 65% of Flange Bolt Size & Torque's written reviews are positive against 100% of Workstrings's.

Flange Bolt Size & Torque ships an update monthly, Workstrings every 8 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flange Bolt Size & Torque | Workstrings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (363 ratings)](https://appshunter.io/ios/app/flange-bolt-size-and-torque/id1489122965/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/workstrings/id6740924535/reviews)** |
| Number of ratings | **363** | 14 |
| Positive reviews | 65.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 31 MB | 135 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Source Consulting LLC](https://appshunter.io/developer/1222335487) | [SESI Holdings, Inc.](https://appshunter.io/developer/1777501957) |

## What reviewers say

### Flange Bolt Size & Torque

[App page](https://appshunter.io/ios/app/flange-bolt-size-and-torque/id1489122965)

Instantly access flange, pipe, and bolt data offline. Quickly find bolt sizes, torque patterns, flange dimensions, and pipe specifications. Ideal for pipefitters and steamfitters needing rapid access to piping information.

**Highlights:** Offline data access, Instant data lookups, Flange bolting data, Flange dimensions data, Pipe data, Gasket data, Torque pattern images

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flange Bolt Professional | $4.99 | per 3 months |
| Suggested Torque | $0.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Huge time saver
- ✅ Reliable data
- 🛠️ Very helpful tool
- 💡 Useful for trade/craft

**What reviewers complain about**

- 💸 Now charges for features
- 👎 Used to be better
- 📉 Functionality decreased after redesign
- ❌ Missing Code 61/62 flange info
- 💰 Subscription model disliked

**Reported bugs**

- App stopped working, requires resubscription
- App will not open after latest update
- App is broken
- Black screen and grey bar in the middle
- Wrench sizes don't match up on some flanges

**Requested features**

- Add Code 61/62 flange information
- Include machined bolt sizes
- Add torquing equipment info (rad guns, J gun, etc.) and usage instructions
- Include CGI and CG torque specs for different gasket styles
- Add support for larger flange sizes (beyond 60")


### Workstrings

[App page](https://appshunter.io/ios/app/workstrings/id6740924535)

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.

**Highlights:** Search product specifications, View detailed spec sheets, Download specification documents, Share product information, Browse tubular goods, Access Worktech Joints specs

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flange Bolt Size & Torque free?

Flange Bolt Size & Torque is free to download, with in-app purchases available.

### Is Workstrings free?

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

### Which has better reviews, Flange Bolt Size & Torque or Workstrings?

Workstrings is rated higher. Flange Bolt Size & Torque averages 4.6 out of 5 from 363 ratings, while Workstrings averages 5.0 from 14 ratings.

### Do Flange Bolt Size & Torque or Workstrings have ads?

Neither Flange Bolt Size & Torque nor Workstrings shows ads.

### Which is updated more often, Flange Bolt Size & Torque or Workstrings?

Flange Bolt Size & Torque ships an update monthly, and Workstrings every 8 days. Most recently, Flange Bolt Size & Torque was updated on October 13, 2026 and Workstrings on October 1, 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.*