# RIDGID Level vs Propeller Calc

The clearest difference is review sentiment: Propeller Calc at 100% against RIDGID Level's 43%. RIDGID Level's advantage is rating (3.9 vs 3.0) and ratings volume (40 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RIDGID Level holds the better App Store score, 3.9 against 3.0. That said, the two scores are not equally well evidenced: RIDGID Level has 40 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 43% of RIDGID Level's written reviews are positive against 100% of Propeller Calc's, so the app with the better star average is not the one people write more warmly about.

RIDGID Level ships an update every 13 months, Propeller Calc every 21 months. The most recent releases landed on August 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | RIDGID Level | Propeller Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (40 ratings)](https://appshunter.io/ios/app/ridgid-level/id444491222/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/propeller-calc/id478119478/reviews) |
| Number of ratings | **40** | 1 |
| Positive reviews | 43.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 21 months |
| Monetization | Free | Free |
| Size | 16 MB | 3 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RIDGID Software Solutions](https://appshunter.io/developer/444491225) | [Frode Rørvik](https://appshunter.io/developer/478119481) |

## What reviewers say

### RIDGID Level

[App page](https://appshunter.io/ios/app/ridgid-level/id444491222)

This utility app uses your phone's sensors to provide precise leveling and plumb measurements. It features three vials for plumb, level, and 45° angles, with an option to overlay readings on your camera view. Calibration is available to ensure accuracy.

**Highlights:** Plumb, level, and 45° miter vials, Real-time measurement display, Camera overlay for leveling information, Vertical and horizontal vial calibration, Sensor-based accuracy

**Features:** macOS Compatibility

**In-app purchases:** none


### Propeller Calc

[App page](https://appshunter.io/ios/app/propeller-calc/id478119478)

This utility calculates propeller performance metrics like pitch, gear ratio, RPM, slip, and speed. Input any four values, and the app computes the fifth, helping users understand the relationship between propeller design and boat performance.

**Highlights:** Calculate pitch, gear ratio, RPM, slip, and speed, Enter any four variables to find the fifth, Understand propeller slip and its impact, Supports iPhone and iPad, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RIDGID Level free?

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

### Is Propeller Calc free?

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

### Which has better reviews, RIDGID Level or Propeller Calc?

RIDGID Level is rated higher. RIDGID Level averages 3.9 out of 5 from 40 ratings, while Propeller Calc averages 3.0 from 1 ratings.

### Do RIDGID Level or Propeller Calc have ads?

Neither RIDGID Level nor Propeller Calc shows ads.

### Which is updated more often, RIDGID Level or Propeller Calc?

RIDGID Level ships an update every 13 months, and Propeller Calc every 21 months. Most recently, RIDGID Level was updated on August 18, 2026 and Propeller Calc on September 9, 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.*