# PlantHand — Gas plant field calculators

> Field calculators and reference tables for gas plant and pipeline operators. (iPhone/iPad app by Josh Winter.)

- Source: https://appshunter.io/ios/app/planthand/id6798046104 (this page in markdown: same URL + `.md`)
- Developer: [Josh Winter](https://appshunter.io/developer/6796457108)
- Category: Productivity, Utilities
- Price: $12.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-08-06
- Data updated: 2026-09-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/planthand/id6798046104/reviews.md

## What is PlantHand?

Built by a gas plant operator. Works in the dead zone.

PlantHand is the set of calculators and reference tables a processing plant or pipeline
operator actually reaches for on shift. The same estimates you already work out by hand,
done faster and more consistently, with the published method named on every result.

Hydrates and injection
- Hydrate formation temperature
- Methanol injection rate
- EG injection rate

Pressure and temperature
- JT drop / letdown check
- Turboexpander
- Blowdown time
- N2 purge
- Propane refrigeration

Volumes and flow
- Line fill
- Vessel volume
- Gas velocity
- Flare rate / tip check

Reference
- Pipe schedule
- Gas properties
- Unit converter tuned to plant work
- Glossary

Every calculator names the published correlation behind it and links to the source, so you
can read the theory rather than trust a black box. Where a method has a published validity
range, a result outside it is flagged. Where a method carries a standing constraint, such as
a sweet-gas-only assumption, that is stated with the result.

This is a field estimation tool. It is not engineering design software, it does not produce a
certified or stamped result, and it is never the sole basis for a safety-critical decision.
Verify every number against your facility's approved methods.

Dark for the control room, high-contrast light for direct sun. Big touch targets for gloves.
Your last inputs are remembered.

No account. No analytics. No data collected. Calculators run entirely on your device. Method
references open in Safari only if you tap them.

One price. Everything included. No subscription, no unlock packs.

## Key features

- Hydrate formation temperature calculator
- Methanol and EG injection rate calculators
- Pressure and temperature drop calculations
- Volume and flow estimation tools
- Pipe schedule and gas properties reference
- Unit converter and glossary
- Dark and light themes with large touch targets


## Frequently asked questions about PlantHand

### What is PlantHand?

PlantHand is a set of field calculators and reference tables designed for gas plant and pipeline operators. It helps perform common estimations faster and more consistently than manual methods.

### What kind of calculations does PlantHand offer?

PlantHand includes calculators for hydrate formation temperature, methanol/EG injection rates, pressure and temperature drops (like JT drop), blowdown time, line fill, vessel volume, gas velocity, and flare rate.

### Does PlantHand require an internet connection?

No, calculators run entirely on your device. Method references open in Safari only if you tap them, but the core functionality is offline.

### How much does PlantHand cost?

PlantHand is a one-time purchase at $12.99, with everything included. There are no subscriptions or unlock packs.

### Is PlantHand suitable for engineering design?

No, PlantHand is a field estimation tool, not engineering design software. It does not produce certified results and should not be the sole basis for safety-critical decisions.

### What devices does PlantHand support?

Based on the provided data, PlantHand currently supports iPhones.

### How often is PlantHand updated?

The app was last updated on August 7, 2026, with version 1.0. Further update frequency is not specified.

### Does PlantHand collect user data?

No, PlantHand does not collect any user data. It has no account requirement and no analytics are used.

## Version history (last 1 release)

### 1.0 — 2026-08-07

No release notes.

## More apps by Josh Winter

- [Inkdelve: RPG Night Builder](https://appshunter.io/ios/app/inkdelve-rpg-night-builder/id6796457106)
- [CYA Snapper](https://appshunter.io/ios/app/cya-snapper/id6798063381)

All apps by Josh Winter: https://appshunter.io/developer/6796457108

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*