# OilField iHandbook vs Workstrings

The clearest difference is review sentiment: Workstrings at 100% against OilField iHandbook's 0%. Workstrings also leads on price (Free vs $1.99) and update cadence (every 8 days vs every 6 months). On ads, in-app purchases and device support there is nothing between them.

Workstrings is free to download; OilField iHandbook costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OilField iHandbook ships an update every 6 months, Workstrings every 8 days. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OilField iHandbook | Workstrings |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (14 ratings)](https://appshunter.io/ios/app/workstrings/id6740924535/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 8 MB | 135 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [zhandos uakanov](https://appshunter.io/developer/625286817) | [SESI Holdings, Inc.](https://appshunter.io/developer/1777501957) |

## What reviewers say

### OilField iHandbook

[App page](https://appshunter.io/ios/app/oilfield-ihandbook/id916850671)

This app provides essential calculations for oil and gas exploration and drilling specialists. It includes formulas for common operations and supports various units of measurement for convenience.

**Highlights:** Annular Volume calculation, Annular Velocity calculation, Equivalent Circulating Density, Formation Fracture Gradient, Hydraulic Horse Power, Kill Weight Mud calculation, Support for multiple units

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

**In-app purchases:** none


### 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 OilField iHandbook free?

OilField iHandbook costs $1.99, with no in-app purchases.

### Is Workstrings free?

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

### Do OilField iHandbook or Workstrings have ads?

Neither OilField iHandbook nor Workstrings shows ads.

### Which is updated more often, OilField iHandbook or Workstrings?

OilField iHandbook ships an update every 6 months, and Workstrings every 8 days. Most recently, OilField iHandbook was updated on October 8, 2026 and Workstrings on October 16, 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.*