# Simple Harmonic Motion Calc vs Cluster2A

The clearest difference is price: Cluster2A at Free against Simple Harmonic Motion Calc's $2.99. Cluster2A also leads on update cadence (every 3 months vs every 28 months). Simple Harmonic Motion Calc's advantage is in-app purchases (none vs 2) and iOS requirement (17.6 vs 26.2). On ads and device support there is nothing between them.

Cluster2A is free to download; Simple Harmonic Motion Calc costs $2.99 up front. Cluster2A sells 2 one-off in-app purchases. Simple Harmonic Motion Calc asks for nothing beyond the download.

Simple Harmonic Motion Calc ships an update every 28 months, Cluster2A every 3 months. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Simple Harmonic Motion Calc | Cluster2A |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simple-harmonic-motion-calc/id1406677354/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 9 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Chu-Yi Chang](https://appshunter.io/developer/943416679) |

## What reviewers say

### Simple Harmonic Motion Calc

[App page](https://appshunter.io/ios/app/simple-harmonic-motion-calc/id1406677354)

This physics calculator quickly computes various parameters of simple harmonic motion, including amplitude, frequency, displacement, velocity, and acceleration. It supports high precision calculations and offers unit flexibility, making it a handy tool for students and professionals.

**Highlights:** Instant calculation of motion parameters, Copyable results, Included reference formulas, Supports 16 decimal places, Multiple unit support, Ad-free and private

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

**In-app purchases:** none


### Cluster2A

[App page](https://appshunter.io/ios/app/cluster2a/id1544599436)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| K-means Model | $1.99 | one-time |
| DBSCAN Model | $1.99 | one-time |


## Frequently asked questions

### Is Simple Harmonic Motion Calc free?

Simple Harmonic Motion Calc costs $2.99, with no in-app purchases.

### Is Cluster2A free?

Cluster2A is free to download, with in-app purchases available.

### Do Simple Harmonic Motion Calc or Cluster2A have ads?

Neither Simple Harmonic Motion Calc nor Cluster2A shows ads.

### Which is updated more often, Simple Harmonic Motion Calc or Cluster2A?

Simple Harmonic Motion Calc ships an update every 28 months, and Cluster2A every 3 months. Most recently, Simple Harmonic Motion Calc was updated on September 24, 2026 and Cluster2A on October 4, 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.*