# CNS Tap Test vs Estelle studio

The clearest difference is price: Estelle studio at Free against CNS Tap Test's $1.99. Estelle studio also leads on iOS requirement (12.0 vs 16.0). CNS Tap Test's advantage is update cadence (every 3 months vs every 25 months) and chart position (#164 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Estelle studio is free to download; CNS Tap Test costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CNS Tap Test ships an update every 3 months, Estelle studio every 25 months. The most recent releases landed on October 19, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CNS Tap Test | Estelle studio |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.6 (277 ratings)](https://appshunter.io/ios/app/cns-tap-test/id495396849/reviews)** | — |
| Number of ratings | **277** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 25 months |
| Monetization | Free | — |
| Best chart rank | **#164** | — |
| Size | 4 MB | 18 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [smudge.io PTY LTD](https://appshunter.io/developer/426335181) | [Estelle Pilates and Yoga](https://appshunter.io/developer/1579481942) |

## What reviewers say

### CNS Tap Test

[App page](https://appshunter.io/ios/app/cns-tap-test/id495396849)

**Currently charting:** #164 Top Paid · Health & Fitness (US App Store)

This app measures central nervous system (CNS) status using a finger tapping test. Track your performance over time to identify optimal training days or potential fatigue, sickness, or injury.

**Highlights:** Measures central nervous system status, Tracks finger tapping speed, Establishes baseline performance, Identifies CNS fatigue, Graphs and saves test results, Allows for multiple daily samples

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and direct to use
- 👍 Easy to use
- 👍 Great app for monitoring recovery
- 👍 Effective CNS testing tool
- 👍 Useful for assessing neural fatigue

**What reviewers complain about**

- 😞 Confusing interface
- 😞 Plain and not very useful
- 😞 No real information provided
- 😞 Not worth buying
- 😞 Data export issues

**Reported bugs**

- Cannot port data when switching iPhones

**Requested features**

- Add time of day to graphs
- Set parameters on graph
- Integrate data from sleep/step trackers
- Sync with calendar
- Option for 'best out of 3'


### Estelle studio

[App page](https://appshunter.io/ios/app/estelle-studio/id1579481940)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CNS Tap Test free?

CNS Tap Test costs $1.99, with no in-app purchases.

### Is Estelle studio free?

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

### Do CNS Tap Test or Estelle studio have ads?

Neither CNS Tap Test nor Estelle studio shows ads.

### Which is updated more often, CNS Tap Test or Estelle studio?

CNS Tap Test ships an update every 3 months, and Estelle studio every 25 months. Most recently, CNS Tap Test was updated on October 19, 2026 and Estelle studio on October 4, 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.*