# Diamondback Sizing Calculator vs myNAVAC

The clearest difference is update cadence: myNAVAC at every 3 weeks against Diamondback Sizing Calculator's every 5 months. 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.

Diamondback Sizing Calculator ships an update every 5 months, myNAVAC every 3 weeks. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Diamondback Sizing Calculator | myNAVAC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.4 (32 ratings)](https://appshunter.io/ios/app/mynavac/id6459829747/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | — | 16.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 46 MB | 137 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [CB Supplies Ltd.](https://appshunter.io/developer/1645869774) | [NAVAC Inc.](https://appshunter.io/developer/1700369128) |

## What reviewers say

### Diamondback Sizing Calculator

[App page](https://appshunter.io/ios/app/diamondback-sizing-calculator/id1645869772)

**Features:** macOS Compatibility

**In-app purchases:** none


### myNAVAC

[App page](https://appshunter.io/ios/app/mynavac/id6459829747)

Connect to and manage NAVAC brand IoT measurement devices via Bluetooth. View real-time data, control settings remotely, and record measurements. Analyze data with process curves and tables, then export reports in Excel or PDF.

**Highlights:** Bluetooth device connection, Real-time data display, Remote control and settings, Data recording and storage, Process curve and table view, Exportable measurement reports (Excel/PDF)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diamondback Sizing Calculator free?

Diamondback Sizing Calculator is free to download, with no in-app purchases.

### Is myNAVAC free?

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

### Do Diamondback Sizing Calculator or myNAVAC have ads?

Neither Diamondback Sizing Calculator nor myNAVAC shows ads.

### Which is updated more often, Diamondback Sizing Calculator or myNAVAC?

Diamondback Sizing Calculator ships an update every 5 months, and myNAVAC every 3 weeks. Most recently, Diamondback Sizing Calculator was updated on October 11, 2026 and myNAVAC 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.*