# iRotorBalancer vs ChildPilot Parents

The clearest difference is price: ChildPilot Parents at Free against iRotorBalancer's $799.99. ChildPilot Parents also leads on in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 2 months). iRotorBalancer's advantage is rating (5.0 vs 4.3) and iOS requirement (11.0 vs 15.0). On ads there is nothing between them.

ChildPilot Parents is free to download; iRotorBalancer costs $799.99 up front. iRotorBalancer sells 2 one-off in-app purchases. ChildPilot Parents asks for nothing beyond the download.

iRotorBalancer holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: ChildPilot Parents has 21 ratings behind it against 1, so its average is the more settled of the two.

iRotorBalancer ships an update every 2 months, ChildPilot Parents every 2 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | iRotorBalancer | ChildPilot Parents |
| --- | --- | --- |
| Price | $799.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/irotorbalancer/id523471219/reviews)** | [4.3 (21 ratings)](https://appshunter.io/ios/app/childpilot-parents/id1436718223/reviews) |
| Number of ratings | 1 | **21** |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 18 MB | 40 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [SportsPilot Inc](https://appshunter.io/developer/347345814) |

## What reviewers say

### iRotorBalancer

[App page](https://appshunter.io/ios/app/irotorbalancer/id523471219)

This technical tool assists in balancing rotating machinery using single or two-plane methods. It connects to external hardware to measure vibration amplitude and phase, then calculates necessary correction weights and their positions. Reports can be generated and emailed.

**Highlights:** Single-plane balancing (Vector & Four-Runs methods), Two-plane balancing (Influence Coefficients), Real-time waveform and FFT spectrum display, Automatic 1X peak amplitude and phase selection, Polar plot and weight location graphics, Report generation with plots, data, and images

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Report Header and Logo | $49.99 | one-time |
| Two-Plane Overhung Rotor Balancing | $249.99 | one-time |


### ChildPilot Parents

[App page](https://appshunter.io/ios/app/childpilot-parents/id1436718223)

Streamline communication with your child's school, manage payments, and track their activities. Easily check them in and out, view payment history, and receive event notifications. Stay connected with teachers and administrators through secure messaging.

**Highlights:** QR code check-in/out, Online invoice payments, AutoPay enrollment, Payment history viewing, Family tax statement downloads, Child activity log, Teacher/administrator messaging

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

**In-app purchases:** none


## Frequently asked questions

### Is iRotorBalancer free?

iRotorBalancer costs $799.99, and also offers in-app purchases.

### Is ChildPilot Parents free?

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

### Which has better reviews, iRotorBalancer or ChildPilot Parents?

iRotorBalancer is rated higher. iRotorBalancer averages 5.0 out of 5 from 1 ratings, while ChildPilot Parents averages 4.3 from 21 ratings.

### Do iRotorBalancer or ChildPilot Parents have ads?

Neither iRotorBalancer nor ChildPilot Parents shows ads.

### Which is updated more often, iRotorBalancer or ChildPilot Parents?

iRotorBalancer ships an update every 2 months, and ChildPilot Parents every 2 weeks. Most recently, iRotorBalancer was updated on November 1, 2026 and ChildPilot Parents on November 6, 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.*