# Sentry Technology vs DVA MRCA Calculator

The clearest difference is update cadence: DVA MRCA Calculator at weekly against Sentry Technology's every 2 months. Sentry Technology's advantage is iOS requirement (11.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sentry Technology ships an update every 2 months, DVA MRCA Calculator weekly. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sentry Technology | DVA MRCA Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free |
| Size | 38 MB | 27 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sentry Technology Pty Ltd](https://appshunter.io/developer/1646545662) | [Geoffrey Armstrong](https://appshunter.io/developer/1737719910) |

## What reviewers say

### Sentry Technology

[App page](https://appshunter.io/ios/app/sentry-technology/id6443494177)

**Features:** macOS Compatibility

**In-app purchases:** none


### DVA MRCA Calculator

[App page](https://appshunter.io/ios/app/dva-mrca-calculator/id6479970777)

This tool estimates permanent impairment ratings and potential compensation from the Department of Veterans' Affairs (DVA). It uses user-provided information and the GARP-M guidelines, with adjustments for age, gender, and impairment types. It serves as a guide, as DVA considers additional factors.

**Highlights:** Permanent Impairment rating estimation, Compensation payable calculation, GARP-M guideline based, Age and gender adjustments, Combined and partial impairment calculations

**In-app purchases:** none


## Frequently asked questions

### Is Sentry Technology free?

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

### Is DVA MRCA Calculator free?

DVA MRCA Calculator is free to download, with no in-app purchases.

### Do Sentry Technology or DVA MRCA Calculator have ads?

Neither Sentry Technology nor DVA MRCA Calculator shows ads.

### Which is updated more often, Sentry Technology or DVA MRCA Calculator?

Sentry Technology ships an update every 2 months, and DVA MRCA Calculator weekly. Most recently, Sentry Technology was updated on October 8, 2026 and DVA MRCA Calculator on October 14, 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.*