# Sealing Materials Selector vs Study Time App

The clearest difference is update cadence: Study Time App at every 2 weeks against Sealing Materials Selector's every 11 months. On price, ads, in-app purchases and device support 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, Study Time App every 2 weeks. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Sealing Materials Selector | Study Time App |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 15 MB | 80 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Linkco.com LLC](https://appshunter.io/developer/1682447926) |

## 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


### Study Time App

[App page](https://appshunter.io/ios/app/study-time-app/id6447754395)

**Features:** macOS Compatibility

**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 Study Time App free?

Study Time App is free to download, with no in-app purchases.

### Do Sealing Materials Selector or Study Time App have ads?

Neither Sealing Materials Selector nor Study Time App shows ads.

### Which is updated more often, Sealing Materials Selector or Study Time App?

Sealing Materials Selector ships an update every 11 months, and Study Time App every 2 weeks. Most recently, Sealing Materials Selector was updated on September 30, 2026 and Study Time App on October 12, 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.*