# ASTRA Mobile vs Nerve Conduction Studies

The clearest difference is price: ASTRA Mobile at Free against Nerve Conduction Studies's $8.99. Nerve Conduction Studies's advantage is update cadence (every 3 months vs every 11 months) and chart position (#198 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ASTRA Mobile is free to download; Nerve Conduction Studies costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ASTRA Mobile ships an update every 11 months, Nerve Conduction Studies every 3 months. The most recent releases landed on June 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ASTRA Mobile | Nerve Conduction Studies |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/astra-mobile/id473833319/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | Free | — |
| Best chart rank | — | **#198** |
| Size | 10 MB | 138 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Candelis, Inc.](https://appshunter.io/developer/473833322) | [SABIA](https://appshunter.io/developer/1576114681) |

## What reviewers say

### ASTRA Mobile

[App page](https://appshunter.io/ios/app/astra-mobile/id473833319)

This application allows physicians to securely view encrypted medical images and reports sent from ImageGrid PACS systems. Access requires an invitation from an imaging center and an existing ASTRA cloud account. Patient information is transferred safely through the ASTRA cloud.

**Highlights:** View DICOM images, Access PDF reports, Secure encrypted transfer, ImageGrid PACS integration, Requires ASTRA cloud account

**Features:** macOS Compatibility

**In-app purchases:** none


### Nerve Conduction Studies

[App page](https://appshunter.io/ios/app/nerve-conduction-studies/id1589627405)

**Currently charting:** #198 Top Paid · Medical (US App Store)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ASTRA Mobile free?

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

### Is Nerve Conduction Studies free?

Nerve Conduction Studies costs $8.99, with no in-app purchases.

### Do ASTRA Mobile or Nerve Conduction Studies have ads?

Neither ASTRA Mobile nor Nerve Conduction Studies shows ads.

### Which is updated more often, ASTRA Mobile or Nerve Conduction Studies?

ASTRA Mobile ships an update every 11 months, and Nerve Conduction Studies every 3 months. Most recently, ASTRA Mobile was updated on June 24, 2026 and Nerve Conduction Studies on September 16, 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.*