iRotorBalance vs HDSensor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iRotorBalance
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.
- 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
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iRotorBalance is a educational and technical calculator for balancing of rotating machinery. The application calculates the correction balancing weight and its angular position given the amplitude and the phase of the measured vibration. Features: - Single-Plane Balancing Technique: Vector Method - Single-Plane Balancing Technique: 4-Runs Method - Two-Plane Balancing Technique: Influence Coefficient Method - Angular Mass Distribution Calculation - Permissible Residual Unbalance Determination - e-mail the results as a report Disclaimer: Although the calculations done by this application were made with great care, it may contain error or inaccuracies. Using the results of the calculations is the responsibility of the user.
HDSensor
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An app for Bluetooth temperature and humidity monitoring launched by huadao , allowing you to view real-time temperature and humidity, historical data change curves, and export temperature and humidity data, etc.
Screenshots
Verdict
The clearest difference is price: HDSensor at Free against iRotorBalance's $4.99. iRotorBalance's advantage is chart position (#184 vs unranked) and iOS requirement (7.1 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
HDSensor is free to download; iRotorBalance costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iRotorBalance ships an update every 5 months, HDSensor every 3 months. The most recent releases landed on September 22, 2026 and October 7, 2026 respectively.
| Parameter | iRotorBalance | HDSensor |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #184 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 7.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 16 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Motionics LLC | 磊鑫 黄 |
In-app purchases
iRotorBalance
No in-app purchases
HDSensor
No in-app purchases
