# Sealing Materials Selector vs SUN

The clearest difference is device support: Sealing Materials Selector at 2 against SUN's —. SUN's advantage is iOS requirement (13.4 vs 15.6). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sealing Materials Selector ships an update every 11 months, SUN every 14 months. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sealing Materials Selector | SUN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sealing-materials-selector/id1128647369/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 11 months** | Every 14 months |
| Monetization | Free | — |
| Size | 15 MB | 24 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [SUN-TEC CORPORATION](https://appshunter.io/developer/1711446511) |

## 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


### SUN

[App page](https://appshunter.io/ios/app/sun-tec/id6469055994)

**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 SUN free?

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

### Which is updated more often, Sealing Materials Selector or SUN?

Sealing Materials Selector ships an update every 11 months, and SUN every 14 months. Most recently, Sealing Materials Selector was updated on October 12, 2026 and SUN 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.*