# Sealing Materials Selector vs Simple Harmonic Motion Calc

The clearest difference is price: Sealing Materials Selector at Free against Simple Harmonic Motion Calc's $2.99. Sealing Materials Selector also leads on update cadence (every 11 months vs every 28 months) and iOS requirement (15.6 vs 17.6). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Sealing Materials Selector is free to download; Simple Harmonic Motion Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Sealing Materials Selector against 5.0 for Simple Harmonic Motion Calc. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Sealing Materials Selector ships an update every 11 months, Simple Harmonic Motion Calc every 28 months. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sealing Materials Selector | Simple Harmonic Motion Calc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/sealing-materials-selector/id1128647369/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/simple-harmonic-motion-calc/id1406677354/reviews) |
| Number of ratings | 2 | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 28 months |
| Monetization | **Free** | Paid |
| Size | 15 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Sealing Materials Selector

[App page](https://appshunter.io/ios/app/sealing-materials-selector/id1128647369)

Easily find the right sealing materials by entering specifications like temperature and hardness. Filter by chemical compatibility, approvals, or product type for O-Rings, Quad-Rings, and V-Rings. Request material datasheets directly through the app.

**Highlights:** Search by material specifications, Filter by temperature and hardness, Chemical compatibility filtering, Institute approvals filtering, Product type filtering (O-Rings, Quad-Rings, V-Rings), Request material datasheets

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sealing Materials Selector free?

Sealing Materials Selector is free to download, with no in-app purchases.

### Is Simple Harmonic Motion Calc free?

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

### Which has better reviews, Sealing Materials Selector or Simple Harmonic Motion Calc?

Sealing Materials Selector and Simple Harmonic Motion Calc are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Sealing Materials Selector or Simple Harmonic Motion Calc have ads?

Neither Sealing Materials Selector nor Simple Harmonic Motion Calc shows ads.

### Which is updated more often, Sealing Materials Selector or Simple Harmonic Motion Calc?

Sealing Materials Selector ships an update every 11 months, and Simple Harmonic Motion Calc every 28 months. Most recently, Sealing Materials Selector was updated on October 18, 2026 and Simple Harmonic Motion Calc 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.*