# T.A.C.T. vs NIH Toolbox V3

The clearest difference is rating: NIH Toolbox V3 at 4.7 against T.A.C.T.'s 3.7. NIH Toolbox V3 also leads on update cadence (every 2 months vs every 10 months). T.A.C.T.'s advantage is monetization model (free with in-app purchases vs subscription) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. T.A.C.T. sells 1 one-off in-app purchase and NIH Toolbox V3 sells 3 in-app purchases, starting at $599.99 per year. Whichever you choose, the download price is not the number that matters.

NIH Toolbox V3 holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

T.A.C.T. ships an update every 10 months, NIH Toolbox V3 every 2 months. The most recent releases landed on June 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | T.A.C.T. | NIH Toolbox V3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/tact/id849194153/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/nih-toolbox-v3/id1627119550/reviews)** |
| Number of ratings | 3 | 3 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 6 MB | 938 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 12+ | 4+ |
| Developer | [Push Interactions, Inc.](https://appshunter.io/developer/357410200) | [Toolbox Assessments, Inc.](https://appshunter.io/developer/1724444781) |

## What reviewers say

### T.A.C.T.

[App page](https://appshunter.io/ios/app/tact/id849194153)

This app is a continuous performance test designed to measure errors of commission, omission, and scoring variability over 15 minutes. It can help demonstrate clinical response to stimulant medication and is part of ADHD assessment and treatment.

**Highlights:** Measures errors of commission and omission, Assesses scoring variability, Provides a total score, Offers minute-by-minute scoring, Demonstrates clinical response to medication, Used for research purposes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock more then five patients | $69.99 | one-time |


### 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 T.A.C.T. free?

T.A.C.T. is free to download, with in-app purchases available.

### Is NIH Toolbox V3 free?

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

### Which has better reviews, T.A.C.T. or NIH Toolbox V3?

NIH Toolbox V3 is rated higher. T.A.C.T. averages 3.7 out of 5 from 3 ratings, while NIH Toolbox V3 averages 4.7 from 3 ratings.

### Do T.A.C.T. or NIH Toolbox V3 have ads?

Neither T.A.C.T. nor NIH Toolbox V3 shows ads.

### Which is updated more often, T.A.C.T. or NIH Toolbox V3?

T.A.C.T. ships an update every 10 months, and NIH Toolbox V3 every 2 months. Most recently, T.A.C.T. was updated on June 8, 2026 and NIH Toolbox V3 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.*