# Measure Angles vs DuctCalc.Ca

The clearest difference is rating: Measure Angles at 4.2 against DuctCalc.Ca's 1.9. Measure Angles also leads on update cadence (fortnightly vs every 4 months) and ratings volume (2K vs 20). DuctCalc.Ca's advantage is ads (none vs shown) and iOS requirement (11.3 vs 16.6). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Measure Angles sells 10 in-app purchases, starting at $2.99 per 7 days and DuctCalc.Ca sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Measure Angles holds the better App Store score, 4.2 against 1.9. That said, the two scores are not equally well evidenced: Measure Angles has 2K ratings behind it against 20, so its average is the more settled of the two. Written reviews complicate that: 47% of Measure Angles'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.

Measure Angles ships an update fortnightly, DuctCalc.Ca every 4 months. The most recent releases landed on November 13, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Measure Angles | DuctCalc.Ca |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (2K ratings)](https://appshunter.io/ios/app/measure-angles-bubble-level/id458980311/reviews)** | [1.9 (20 ratings)](https://appshunter.io/ios/app/ductcalcca/id1434460375/reviews) |
| Number of ratings | **2K** | 20 |
| Positive reviews | 46.9% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 46 MB | 9 MB |
| Requires iOS | 16.6 | **11.3** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WHATSTICKER APPS SRL](https://appshunter.io/developer/1784779333) | [Firas Kneifati](https://appshunter.io/developer/1434460374) |

## What reviewers say

### Measure Angles

[App page](https://appshunter.io/ios/app/measure-angles-bubble-level/id458980311)

This app transforms your device into a versatile measuring tool. It offers precise angle readings with a digital protractor and bubble level, along with AR-powered distance and volume measurements. Ideal for professionals, DIY enthusiasts, and everyday tasks requiring accuracy.

**Highlights:** Digital protractor for angle measurement, Bubble level for surface flatness, AR-powered distance and volume estimation, Integrated ruler and tape measure, Compass and altimeter, Timer and audio meter

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Weekly Premium | $2.99 | per 7 days |
| Weekly premium | $4.99 | per 7 days |
| Weekly premium trial | $4.99 | per 7 days |
| Yearly premium trial | $29.99 | per year |
| Yearly premium | $29.99 | per year |
| Unlock all tools | $1.99 | one-time |
| No ads | $2.99 | one-time |
| Premium Discount | $2.99 | one-time |
| Premium Edition | $3.99 | one-time |

**What reviewers like**

- 🚀 Accurate
- 👍 Easy to use
- 👍 Versatile
- 👍 Useful tool
- 👍 Well-designed

**What reviewers complain about**

- 🐛 Connectivity issues
- 💰 Requires payment
- 🔍 Difficult to exit/close
- 📺 Intrusive ads
- 🔒 Tracking concerns

**Reported bugs**

- Angle appears reversed or flipped
- Angle locks too quickly
- App crashes on launch
- Measurements are inaccurate

**Requested features**

- Panoramic measurement tool
- Surround audio setup feature
- Ability to reset protractor to 0 degrees
- Black/white display for better readability
- Support for iPad split-screen


### 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 Measure Angles free?

Measure Angles is free to download, with in-app purchases available.

### Is DuctCalc.Ca free?

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

### Which has better reviews, Measure Angles or DuctCalc.Ca?

Measure Angles is rated higher. Measure Angles averages 4.2 out of 5 from 2K ratings, while DuctCalc.Ca averages 1.9 from 20 ratings.

### Do Measure Angles or DuctCalc.Ca have ads?

Measure Angles shows ads; DuctCalc.Ca does not.

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

Measure Angles ships an update fortnightly, and DuctCalc.Ca every 4 months. Most recently, Measure Angles was updated on November 13, 2026 and DuctCalc.Ca on November 2, 2026.

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