# Project Engineer — Engineering Calculators

> Engineering Calculators (iPhone/iPad app by Shaw Abrey.)

- Source: https://appshunter.io/ios/app/project-engineer/id6766019250 (this page in markdown: same URL + `.md`)
- Developer: [Shaw Abrey](https://appshunter.io/developer/1896164755)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 50 MB
- Languages: American English
- Released: 2026-07-15
- Data updated: 2026-07-25
- User reviews in markdown: https://appshunter.io/ios/app/project-engineer/id6766019250/reviews.md

## What is Project Engineer?

Project Engineer is a complete engineering toolkit for iPhone and iPad, 240+ technical calculators across the disciplines you actually use, in one clean, fast, results-focused app.
No more juggling spreadsheets, textbooks, lookup tables, and one-off websites. Enter your inputs and get clear, accurate, instantly readable results, every time.

INSTANT METRIC ↔ IMPERIAL
Switch any input or result between metric and imperial units instantly, with a single tap. No re-typing, no manual conversions, every value updates on the spot.

BUILT FOR REAL ENGINEERING WORK
Project Engineer spans civil, environmental, mechanical, and more, for example:
• Manning's equation for pipe and open-channel flow
• Solar azimuth & position
• Hydraulics, hydrology & stormwater
• Geotechnical & structural
• Thermodynamics & fluid mechanics
• First-principles tools, mathematics & unit conversions
…and many more, with new calculators on the way.

LIVE-DATA TOOLS (PREMIUM)
A standout you won't find in ordinary calculator apps: calculators that pull real-world climate and environmental data from live sources to give site-specific results, including rainwater tank sizing, irrigation demand, and pond-level exceedance. Turn textbook formulas into answers grounded in the real conditions at your location.

DESIGNED FOR CLARITY & SPEED
• Instant metric/imperial switching on every value
• A consistent, distraction-free layout so the answer is always front and centre
• Fast, on-device calculations
• Save your results and sync them across devices
• Mark favourites for the tools you use most

SIMPLE, FAIR PLANS
• Free: 39 calculators to get started
• Pro: the full standard library, unlimited saved results, favourites, and cloud sync
• Premium: everything in Pro, plus live-data tools and early access to new features

WHO IT'S FOR
Practising engineers, designers, drafters, technicians, and engineering students who want trustworthy calculations without the clutter, at the desk or in the field.
Project Engineer continues to improve based on your feedback. Have a request or spotted something? Reach us anytime through the in-app contact form.
Subscriptions are auto-renewable and billed through your Apple ID; they renew unless cancelled at least 24 hours before the period ends, and you can manage or cancel anytime in your device settings.

Terms of Service: https://projectengineer.app/terms
Privacy Policy: https://projectengineer.app/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro | $5.99 | per month |
| Pro (Annual) | $49.99 | per year |
| Premium | $12.99 | per month |
| Premium (Annual) | $99.99 | per year |



## Version history (last 3 releases)

### 1.02 — 2026-07-24

What's New in 1.0.2

- Bernoulli: apply a direct head loss and a minor-loss (K) term together — the calculator now sums both into the total head loss.
- Custom fluids: Bernoulli and Buoyancy now include a "Custom" option so you can enter your own fluid density.
- Buoyancy: enter an object's weight directly in kilograms (kgf).
- Navigation: the back button now returns you to the home screen from any menu page.
- A smoother, more secure sign-up, plus general refinements and fixes.

Questions or found an issue? Contact us at contact@projectengineer.app

### 1.01 — 2026-07-18

Thanks for using Project Engineer! This update makes getting started easier and smooths out a few rough edges.

GUIDED TOUR
New users now get a short, interactive walkthrough of the essentials — search, instant metric/imperial switching, working through a calculator, the live graph, and more. Replay it anytime from the menu ("Take a tour").

EASIER, SAFER SIGN-UP
Account creation now includes a Confirm Password field, so a single typo can't lock you out of a brand-new account.

REFINEMENTS
- Smoother sign-in and start-up
- Minor fixes and polish throughout

More calculators and improvements are on the way. Have a request or spotted something? Reach us anytime through the in-app contact form.

### 1.0 — 2026-07-15

No release notes.

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*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 2026-07-25.*