# iRotorBalance vs Vector Calculator Plus

The clearest difference is review sentiment: iRotorBalance at 100% against Vector Calculator Plus's 0%. iRotorBalance also leads on rating (3.0 vs 2.5) and update cadence (every 5 months vs every 43 months). Vector Calculator Plus's advantage is price ($2.99 vs $4.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

iRotorBalance costs $4.99 and Vector Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iRotorBalance holds the better App Store score, 3.0 against 2.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of iRotorBalance's written reviews are positive against 0% of Vector Calculator Plus's.

iRotorBalance ships an update every 5 months, Vector Calculator Plus every 43 months. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | iRotorBalance | Vector Calculator Plus |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/irotorbalance/id430978753/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/vector-calculator-plus/id1630864948/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 43 months |
| Monetization | Paid | Paid |
| Size | 16 MB | 1 MB |
| Requires iOS | **7.1** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### iRotorBalance

[App page](https://appshunter.io/ios/app/irotorbalance/id430978753)

This technical calculator assists in balancing rotating machinery by determining correction weights and angular positions based on vibration measurements. It offers various balancing techniques and allows users to email detailed reports.

**Highlights:** Single-Plane Balancing (Vector Method), Single-Plane Balancing (4-Runs Method), Two-Plane Balancing (Influence Coefficient Method), Angular Mass Distribution Calculation, Permissible Residual Unbalance Determination, Email results as a report

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

**In-app purchases:** none


### Vector Calculator Plus

[App page](https://appshunter.io/ios/app/vector-calculator-plus/id1630864948)

This app simplifies vector addition for students and educators. It allows for quick calculations of multiple vectors, visualizing the results with generated graphs. Users can customize graph elements and save images for later use.

**Highlights:** Instant vector calculation, Add multiple vectors by x, y, magnitude, or angle, Generate vector images, Save vector images to camera roll, Customize graph display options, Set background color for graphs

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

**In-app purchases:** none


## Frequently asked questions

### Is iRotorBalance free?

iRotorBalance costs $4.99, with no in-app purchases.

### Is Vector Calculator Plus free?

Vector Calculator Plus costs $2.99, with no in-app purchases.

### Which has better reviews, iRotorBalance or Vector Calculator Plus?

iRotorBalance is rated higher. iRotorBalance averages 3.0 out of 5 from 2 ratings, while Vector Calculator Plus averages 2.5 from 2 ratings.

### Do iRotorBalance or Vector Calculator Plus have ads?

Neither iRotorBalance nor Vector Calculator Plus shows ads.

### Which is updated more often, iRotorBalance or Vector Calculator Plus?

iRotorBalance ships an update every 5 months, and Vector Calculator Plus every 43 months. Most recently, iRotorBalance was updated on October 9, 2026 and Vector Calculator Plus on October 11, 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.*