# Wilo vs Project Engineer

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.

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.

## The numbers

| Metric | Wilo | Project Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 181 MB | 73 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WILO SE](https://appshunter.io/developer/756670903) | [Shaw Abrey](https://appshunter.io/developer/1896164755) |

## What reviewers say

### Wilo

[App page](https://appshunter.io/ios/app/wilo-assistant/id397747214)

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.

**Highlights:** 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

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

**In-app purchases:** none


### Project Engineer

[App page](https://appshunter.io/ios/app/project-engineer/id6766019250)

**Features:** macOS Compatibility

**In-app purchases (4)**

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


## Frequently asked questions

### Is Wilo free?

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

### Is Project Engineer free?

Project Engineer is free to download, with in-app purchases available.

### Do Wilo or Project Engineer have ads?

Neither Wilo nor Project Engineer shows ads.

### Which is updated more often, Wilo or Project Engineer?

Wilo ships an update every 3 weeks, and Project Engineer weekly. Most recently, Wilo was updated on October 17, 2026 and Project Engineer on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*