# TVS Diode Array Product Selector vs Trace

The clearest difference is in-app purchases: TVS Diode Array Product Selector at none against Trace's 1. TVS Diode Array Product Selector also leads on iOS requirement (8.4 vs 17.0). Trace's advantage is update cadence (every 6 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Trace sells 1 one-off in-app purchase. TVS Diode Array Product Selector asks for nothing beyond the download.

TVS Diode Array Product Selector ships an update every 6 months, Trace every 6 days. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TVS Diode Array Product Selector | Trace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tvs-diode-array-product-selector/id438716133/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 8 MB | 16 MB |
| Requires iOS | **8.4** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Littelfuse, Inc.](https://appshunter.io/developer/503818127) | [Yi-Sung Lin](https://appshunter.io/developer/1896522925) |

## What reviewers say

### TVS Diode Array Product Selector

[App page](https://appshunter.io/ios/app/tvs-diode-array-product-selector/id438716133)

This app helps you find the right TVS Diode Array for your electronic circuits. It asks a few questions about your application to recommend the best product for ESD and lightning surge protection. You can also request samples and access datasheets.

**Highlights:** Product recommendation based on application needs, Sample requests, View product information and characteristics, Download datasheets, Access design resources

**In-app purchases:** none


### Trace

[App page](https://appshunter.io/ios/app/trace-audio-notes-and-insights/id6767938270)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MeetingPipeline Full Unlock | $5.99 | one-time |


## Frequently asked questions

### Is TVS Diode Array Product Selector free?

TVS Diode Array Product Selector is free to download, with no in-app purchases.

### Is Trace free?

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

### Do TVS Diode Array Product Selector or Trace have ads?

Neither TVS Diode Array Product Selector nor Trace shows ads.

### Which is updated more often, TVS Diode Array Product Selector or Trace?

TVS Diode Array Product Selector ships an update every 6 months, and Trace every 6 days. Most recently, TVS Diode Array Product Selector was updated on October 16, 2026 and Trace on October 21, 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.*