# Shim Selector vs Qualitygram

The clearest difference is iOS requirement: Qualitygram at 12.4 against Shim Selector's 16.6. On price, update cadence, ads 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.

Shim Selector ships an update every 7 months, Qualitygram every 10 months. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Shim Selector | Qualitygram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/shim-selector/id718147152/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Monetization | Free | — |
| Size | 15 MB | 33 MB |
| Requires iOS | 16.6 | **12.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [orca digital solutions north america inc](https://appshunter.io/developer/1694177275) |

## What reviewers say

### Shim Selector

[App page](https://appshunter.io/ios/app/shim-selector/id718147152)

This tool helps engineers find optimal shim materials for brake NVH issues. It features an FFT analyzer for precise results and an advanced search to filter materials by various properties. Users can easily request material samples for testing.

**Highlights:** FFT analyzer for peak dB and frequency, Advanced search and filtering, Material selection based on adhesive, steel, and thickness, Request dynamometer test samples, Access to Trelleborg's material expertise

**Features:** macOS Compatibility

**In-app purchases:** none


### Qualitygram

[App page](https://appshunter.io/ios/app/qualitygram/id6450634358)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shim Selector free?

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

### Is Qualitygram free?

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

### Do Shim Selector or Qualitygram have ads?

Neither Shim Selector nor Qualitygram shows ads.

### Which is updated more often, Shim Selector or Qualitygram?

Shim Selector ships an update every 7 months, and Qualitygram every 10 months. Most recently, Shim Selector was updated on September 30, 2026 and Qualitygram on September 28, 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.*