# Otnac vs NIH Toolbox

The clearest difference is rating: Otnac at 3.0 against NIH Toolbox's 1.0. Otnac also leads on in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 4 months). On price, ratings volume, ads and device support there is nothing between them.

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

Otnac holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Otnac ships an update every 3 weeks, NIH Toolbox every 4 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Otnac | NIH Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/otnac/id417750647/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/nih-toolbox/id1002228307/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 559 MB | 715 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPad | iPad |
| Age rating | 17+ | 4+ |
| Developer | [Epic](https://appshunter.io/developer/348308666) | [Glinberg & Associates, Inc](https://appshunter.io/developer/981361720) |

## What reviewers say

### Otnac

[App page](https://appshunter.io/ios/app/otnac/id417750647)

This application allows project team members and system administrators of organizations using Epic Canto to preview upcoming development before it is released to clinicians. Access requires administrator security within an organization that is live on or installing Canto. Clinical users should download the standard Epic Canto app instead.

**Highlights:** Preview upcoming Epic Canto development, For project team members, For system administrators, Requires Epic Canto installation, Administrator security access

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Otnac free?

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

### Is NIH Toolbox free?

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

### Which has better reviews, Otnac or NIH Toolbox?

Otnac is rated higher. Otnac averages 3.0 out of 5 from 2 ratings, while NIH Toolbox averages 1.0 from 1 ratings.

### Do Otnac or NIH Toolbox have ads?

Neither Otnac nor NIH Toolbox shows ads.

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

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