# NIH Toolbox vs KYSA

The clearest difference is in-app purchases: KYSA at none against NIH Toolbox's 4. KYSA also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. NIH Toolbox sells 4 in-app purchases, starting at $0.99 per 7 days. KYSA asks for nothing beyond the download.

NIH Toolbox ships an update every 4 months, KYSA every 3 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | NIH Toolbox | KYSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/nih-toolbox/id1002228307/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 715 MB | 136 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Glinberg & Associates, Inc](https://appshunter.io/developer/981361720) | [Hello Thread](https://appshunter.io/developer/996237890) |

## What reviewers say

### NIH Toolbox

[App page](https://appshunter.io/ios/app/nih-toolbox/id1002228307)

This legacy app provides a comprehensive set of measures for cognitive, emotional, motor, and sensory function in individuals aged 3-85. Designed for research and clinical use, it offers streamlined workflows for over 50 tests. Note: this version will be retired in June 2028.

**Highlights:** Cognitive, emotional, motor, sensory function assessment, Ages 3-85, Research and clinical use, Streamlined workflows, Over 50 tests, Crosswalk among measures

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NIH Toolbox Assessments | $0.99 | per 7 days |
| NIH Toolbox Assessments | $499.99 | per year |
| NIH Toolbox Assessments | $499.99 | per year |
| NIH Toolbox Assessments | $1299.99 | per year |


### KYSA

[App page](https://appshunter.io/ios/app/kysa-6/id6504346623)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NIH Toolbox free?

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

### Is KYSA free?

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

### Do NIH Toolbox or KYSA have ads?

Neither NIH Toolbox nor KYSA shows ads.

### Which is updated more often, NIH Toolbox or KYSA?

NIH Toolbox ships an update every 4 months, and KYSA every 3 months. Most recently, NIH Toolbox was updated on November 1, 2026 and KYSA on October 30, 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.*