# TreadReader vs Eunoia

TreadReader and Eunoia are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

TreadReader ships an update every 5 weeks, Eunoia every 2 months. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | TreadReader | Eunoia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/treadreader/id1528184960/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 109 MB | 142 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SNAP-ON EQUIPMENT INC](https://appshunter.io/developer/1375570882) | [EUNOIA (Apps)](https://appshunter.io/developer/1641654032) |

## What reviewers say

### TreadReader

[App page](https://appshunter.io/ios/app/treadreader/id1528184960)

This app controls a handheld scanner to perform 3D tire tread depth scans. It guides users through single or full vehicle scans, generating PDF summary reports that highlight uneven wear due to alignment, inflation, or suspension issues.

**Highlights:** Controls TreadReader Hand Held Scanner, Single and full vehicle tire scans, 3D tread depth measurements, Identifies uneven wear causes, Generates PDF Summary Reports, App setup and configuration

**Features:** macOS Compatibility

**In-app purchases:** none


### Eunoia

[App page](https://appshunter.io/ios/app/eunoia/id6446462254)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TreadReader free?

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

### Is Eunoia free?

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

### Do TreadReader or Eunoia have ads?

Neither TreadReader nor Eunoia shows ads.

### Which is updated more often, TreadReader or Eunoia?

TreadReader ships an update every 5 weeks, and Eunoia every 2 months. Most recently, TreadReader was updated on September 28, 2026 and Eunoia on September 23, 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.*