# Linus Tester vs outSMARTPD

The clearest difference is update cadence: outSMARTPD at every 2 weeks against Linus Tester's every 2 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.

Linus Tester ships an update every 2 months, outSMARTPD every 2 weeks. The most recent releases landed on June 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Linus Tester | outSMARTPD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/linus-tester/id1523340677/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 202 MB | 32 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Linus Health, Inc.](https://appshunter.io/developer/1481489335) | [outSMARTPD LLC](https://appshunter.io/developer/1594020630) |

## What reviewers say

### Linus Tester

[App page](https://appshunter.io/ios/app/linus-tester/id1523340677)

This platform collects extensive digital measurements related to brain health, including voice, speech, gait, cognition, and eye movement. It uses machine learning to analyze this data alongside electronic health records, creating precise metrics for evaluating interventions and personalizing brain health recommendations.

**Highlights:** Digital measurement collection, Voice and speech analysis, Gait and cognition tracking, Eye movement monitoring, Machine learning data analysis, Electronic health record integration

**Features:** macOS Compatibility

**In-app purchases:** none


### outSMARTPD

[App page](https://appshunter.io/ios/app/outsmartpd/id6462346736)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Linus Tester free?

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

### Is outSMARTPD free?

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

### Do Linus Tester or outSMARTPD have ads?

Neither Linus Tester nor outSMARTPD shows ads.

### Which is updated more often, Linus Tester or outSMARTPD?

Linus Tester ships an update every 2 months, and outSMARTPD every 2 weeks. Most recently, Linus Tester was updated on June 7, 2026 and outSMARTPD on September 18, 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.*