# Children's Mercy HearPlay vs NIH Toolbox V3

The clearest difference is price: NIH Toolbox V3 at Free against Children's Mercy HearPlay's $199.00. NIH Toolbox V3 also leads on update cadence (every 2 months vs every 10 months). Children's Mercy HearPlay's advantage is in-app purchases (none vs 3) and iOS requirement (14.2 vs 18.0). On ads and device support there is nothing between them.

NIH Toolbox V3 is free to download; Children's Mercy HearPlay costs $199.00 up front. NIH Toolbox V3 sells 3 in-app purchases, starting at $599.99 per year. Children's Mercy HearPlay asks for nothing beyond the download.

Children's Mercy HearPlay ships an update every 10 months, NIH Toolbox V3 every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Children's Mercy HearPlay | NIH Toolbox V3 |
| --- | --- | --- |
| Price | $199.00 | **Free** |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/nih-toolbox-v3/id1627119550/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | — | Subscription |
| Size | 119 MB | 938 MB |
| Requires iOS | **14.2** | 18.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Children's Mercy Hospital](https://appshunter.io/developer/404104913) | [Toolbox Assessments, Inc.](https://appshunter.io/developer/1724444781) |

## What reviewers say

### Children's Mercy HearPlay

[App page](https://appshunter.io/ios/app/childrens-mercy-hearplay/id1576525434)

**Features:** macOS Compatibility

**In-app purchases:** none


### NIH Toolbox V3

[App page](https://appshunter.io/ios/app/nih-toolbox-v3/id1627119550)

This app provides a comprehensive set of measures to assess cognitive, emotional, motor, and sensory functions in individuals aged 3-85. Designed for research and clinical use, it offers streamlined workflows and a user interface for over 50 measures, enabling data pooling and crosswalk analysis.

**Highlights:** Cognitive, emotional, motor, sensory function assessment, Ages 3-85, Streamlined workflows and UI, Over 50 measures, Crosswalk among measures, Includes PROMIS tests

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access on 2 iPads | $599.99 | per year |
| Access on 6 iPads | $1499.99 | per year |
| Access on 10 iPads | $2499.99 | per year |


## Frequently asked questions

### Is Children's Mercy HearPlay free?

Children's Mercy HearPlay costs $199.00, with no in-app purchases.

### Is NIH Toolbox V3 free?

NIH Toolbox V3 is free to download, with in-app purchases available.

### Do Children's Mercy HearPlay or NIH Toolbox V3 have ads?

Neither Children's Mercy HearPlay nor NIH Toolbox V3 shows ads.

### Which is updated more often, Children's Mercy HearPlay or NIH Toolbox V3?

Children's Mercy HearPlay ships an update every 10 months, and NIH Toolbox V3 every 2 months. Most recently, Children's Mercy HearPlay was updated on November 7, 2026 and NIH Toolbox V3 on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*