# iRotorBalance vs Pump Power

The clearest difference is update cadence: iRotorBalance at every 5 months against Pump Power's every 56 months. iRotorBalance also leads on iOS requirement (7.1 vs 16.1). Pump Power's advantage is price ($1.99 vs $4.99). On ads, in-app purchases and device support there is nothing between them.

iRotorBalance costs $4.99 and Pump Power $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iRotorBalance ships an update every 5 months, Pump Power every 56 months. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | iRotorBalance | Pump Power |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/irotorbalance/id430978753/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 56 months |
| Monetization | Paid | — |
| Size | 16 MB | 2 MB |
| Requires iOS | **7.1** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## 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


### Pump Power

[App page](https://appshunter.io/ios/app/pump-power/id1490692755)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iRotorBalance free?

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

### Is Pump Power free?

Pump Power costs $1.99, with no in-app purchases.

### Do iRotorBalance or Pump Power have ads?

Neither iRotorBalance nor Pump Power shows ads.

### Which is updated more often, iRotorBalance or Pump Power?

iRotorBalance ships an update every 5 months, and Pump Power every 56 months. Most recently, iRotorBalance was updated on October 9, 2026 and Pump Power on October 17, 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.*