# SALUS vs DuctCalc.Ca

The clearest difference is rating: SALUS at 2.5 against DuctCalc.Ca's 1.9. SALUS also leads on in-app purchases (none vs 4) and update cadence (fortnightly vs every 4 months). DuctCalc.Ca's advantage is review sentiment (50% vs 38%) and iOS requirement (11.3 vs 16.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. DuctCalc.Ca sells 4 one-off in-app purchases. SALUS asks for nothing beyond the download.

SALUS holds the better App Store score, 2.5 against 1.9. Both are backed by a comparable volume of ratings — 23 and 20 respectively. Written reviews complicate that: 38% of SALUS's written reviews are positive against 50% of DuctCalc.Ca's, so the app with the better star average is not the one people write more warmly about.

SALUS ships an update fortnightly, DuctCalc.Ca every 4 months. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SALUS | DuctCalc.Ca |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (23 ratings)](https://appshunter.io/ios/app/salus/id1238368091/reviews)** | [1.9 (20 ratings)](https://appshunter.io/ios/app/ductcalcca/id1434460375/reviews) |
| Number of ratings | **23** | 20 |
| Positive reviews | 37.5% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 50 MB | 9 MB |
| Requires iOS | 16.0 | **11.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Salus Technologies Inc](https://appshunter.io/developer/1536478848) | [Firas Kneifati](https://appshunter.io/developer/1434460374) |

## What reviewers say

### SALUS

[App page](https://appshunter.io/ios/app/salus/id1238368091)

This app helps manage jobsite safety by allowing users to report and receive alerts for hazards. It provides real-time worker tracking, job status updates, and subcontractor visibility. The application also streamlines time tracking, paperwork management, and document sharing for enhanced site organization and safety.

**Highlights:** Hazard reporting and alerts, Real-time worker and subcontractor tracking, Job status updates, Task management, Time tracking, Smart paperwork and document management, Instant notifications

**Features:** Vision Pro support

**In-app purchases:** none


### DuctCalc.Ca

[App page](https://appshunter.io/ios/app/ductcalcca/id1434460375)

This utility app calculates duct dimensions and air velocity using two methods: Equal Friction and Velocity. It supports both round and rectangular ducts, offering precise calculations for HVAC professionals. Offline functionality is available with a subscription.

**Highlights:** Duct sizing calculator, Equal Friction Method, Velocity Method, Round and rectangular duct support, Offline functionality, Full air flow range activation

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Full Air Flow | $6.99 | one-time |
| Three Months Full Air Flow | $17.99 | one-time |
| Six Months Full Air Flow | $29.99 | one-time |
| One Year Full Air Flow | $49.99 | one-time |


## Frequently asked questions

### Is SALUS free?

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

### Is DuctCalc.Ca free?

DuctCalc.Ca is free to download, with in-app purchases available.

### Which has better reviews, SALUS or DuctCalc.Ca?

SALUS is rated higher. SALUS averages 2.5 out of 5 from 23 ratings, while DuctCalc.Ca averages 1.9 from 20 ratings.

### Do SALUS or DuctCalc.Ca have ads?

Neither SALUS nor DuctCalc.Ca shows ads.

### Which is updated more often, SALUS or DuctCalc.Ca?

SALUS ships an update fortnightly, and DuctCalc.Ca every 4 months. Most recently, SALUS was updated on October 24, 2026 and DuctCalc.Ca on October 17, 2026.

---

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