Wilo vs Project Engineer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Wilo
This app provides comprehensive support for planning, consulting, and installing pump technology. It offers tools for selecting replacement pumps, calculating energy savings, and diagnosing faults, even offline. Access detailed product information and control smart pumps.
- Smart pump control and settings
- Interactive replacement pump recommendations
- Energy savings and CO2 emission calculator
- Pump dimensioning and selection
- Fault signal diagnosis and remedies
- Unit conversion tool
- AR product scanner
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Wilo assistant β The entire world of pumps The pump specialist WILO SE has made the entire world of highly efficient pump technology accessible on the smartphones and tablet PCs. As an easy-to-use and mobile application, the app offers support in the areas of planning, customer consultation and installation. In addition, the user is presented with a plethora of valid selling points for energy efficient, economical and environmentally friendly pump technology for heating, air-conditioning and secondary hot water circulation. A large proportion of the data content and functions are installed directly onto the smartphone or tablet and are therefore available to the user even in the absence of a mobile internet connection or WLAN. This way, the user can avoid overloading his/her data volumes and is not limited in anyway by the reception conditions prevalent at the site of use. Functions: > Smart Connect: With the help of the Wilo-Smart Connect function, you can easily access the smart and smart-enabled pumps and pump systems from Wilo and make the desired settings and controls. > Interactive replacement guide: simply enter the name of the pump to be replaced and you will be provided with a recommendation of the suitable, high-efficiency Wilo replacement pump. This service can be used in conjunction with thousands of commercially-available, old pumps that were manufactured in 1975 or later. > Energy savings calculator: calculates the potential savings in terms of energy costs and CO2 emissions by comparing implementation of an energy-saving Wilo high-efficiency pump with that of an uncontrolled heating pump. > Catalogue: displays the catalogue description for Wilo pumps. > Pump dimensioning: according to the specifications of the desired pump duty points, the Wilo server adopts the pump dimensioning and recommends the suitable Wilo pump in a matter of seconds. > Fault signal assistant: the "Fault signal assistant" tool contains fundamental information on possible fault signals that may be shown on the display of certain Wilo pumps. With some fault signals, the tool specifies the cause of the fault, describes the error and specifies possible remedies, in addition to basic information about hazards. > Unit converter: conversion of the fundamental physical units > News: up-to-date information > QR Scanner: Scan any QR code > AR Scanner: Scan product images of Wilo products in brochures or at trade shows for additional information such as videos, animations or direct links to the series description The Wilo Group is one of the world's leading premium providers of pumps and pump systems for building services, water management, and the industrial sector. Over the past decade, we have transformed from a hidden to a visible and connected champion. Today, over 9,000 employees work for Wilo worldwide. We place great emphasis on transparency for all employees, partners, and customers.
Project Engineer
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Project Engineer is a complete engineering toolkit for iPhone and iPad: hundreds of 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, instantly readable results, with the theory and equations behind every answer. INSTANT METRIC β IMPERIAL Switch any input or result between metric and imperial units 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, structural, environmental, mechanical, electrical and more, for example: - Manning's equation for pipe and open-channel flow - Hydraulics, hydrology & stormwater - Structural steel, reinforced concrete & connections - Geotechnical, foundations & retaining walls - Thermodynamics, heat transfer & fluid mechanics - Roads, traffic & geometric design - Electrical, building services & acoustics - Mathematics, numerical methods & statistics - Solar position & PV sizing β¦and many more, with new calculators on the way. SEE THE WORKING Every calculator includes a theory section with the governing equations, variable definitions and reference sources, so you can see exactly how a result was reached and check it against your own working. 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, reservoir yield 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: a selection of 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 dependable calculations without the clutter, at the desk or in the field. Project Engineer is a calculation aid. Results should be checked and applied by a suitably qualified person in line with the relevant codes and standards. 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
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Verdict
The clearest difference is in-app purchases: Wilo at none against Project Engineer's 4. Project Engineer's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (15.1 vs 18.6). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Project Engineer sells 4 in-app purchases, starting at $5.99 per month. Wilo asks for nothing beyond the download.
Wilo ships an update every 3 weeks, Project Engineer weekly. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.
| Parameter | Wilo | Project Engineer |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.2% of reviews | β |
| Update frequency | Every 3 weeks | Weekly β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | Free | β |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 18.6 | 15.1 β better |
| Further details β not scored | ||
| Size | 181 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | WILO SE | Shaw Abrey |
In-app purchases
Wilo
No in-app purchases
Project Engineer
- Pro7 Days trial$5.991 Month
- Premium7 Days trial$12.991 Month
- Pro (Annual)7 Days trial$49.991 Year
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- Premium (Annual)7 Days trial$99.991 Year
Questions
Is Wilo free?
Is Project Engineer free?
Do Wilo or Project Engineer have ads?
Which is updated more often, Wilo or Project Engineer?
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