# Volume Calculator Pro vs Guard7

The clearest difference is price: Volume Calculator Pro at Free against Guard7's $6.99. Volume Calculator Pro also leads on rating (4.2 vs 3.5) and ratings volume (6 vs 2). Guard7's advantage is in-app purchases (none vs 3) and update cadence (daily vs every 31 months). On ads, device support and iOS requirement there is nothing between them.

Volume Calculator Pro is free to download; Guard7 costs $6.99 up front. Volume Calculator Pro sells 3 in-app purchases, starting at $0.99 per 7 days. Guard7 asks for nothing beyond the download.

Volume Calculator Pro holds the better App Store score, 4.2 against 3.5. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Volume Calculator Pro ships an update every 31 months, Guard7 daily. The most recent releases landed on October 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Volume Calculator Pro | Guard7 |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/volume-calculator-pro/id1566518769/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/guard7-lite/id6482847900/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 31 months | **Daily** |
| Monetization | **Free** | Paid |
| Size | 2 MB | 3 MB |
| Requires iOS | **14.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [斌 虞](https://appshunter.io/developer/561889393) |

## What reviewers say

### Volume Calculator Pro

[App page](https://appshunter.io/ios/app/volume-calculator-pro/id1566518769)

This utility app quickly calculates and converts volumes between imperial and metric systems. Input dimensions like width, length, and depth to get instant results in various units. It supports multiple measurement systems for easy conversion.

**Highlights:** Real-time volume conversion, Imperial and metric unit support, Calculate volume from dimensions, Supports centimeters, meters, inches, feet, and yards, Outputs cubic centimeters, meters, inches, feet, and yards

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### Guard7

[App page](https://appshunter.io/ios/app/guard7-lite/id6482847900)

This tool provides robust encryption and decryption for files and emails, utilizing industry-standard cryptography. It simplifies complex cryptographic tasks for secure communication and data protection.

**Highlights:** Encrypt and decrypt files, Encrypt and decrypt emails, Sign and verify files, Organize contacts in groups, Efficient recipient management, Graphical frontend for GnuPG

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Volume Calculator Pro free?

Volume Calculator Pro is free to download, with in-app purchases available.

### Is Guard7 free?

Guard7 costs $6.99, with no in-app purchases.

### Which has better reviews, Volume Calculator Pro or Guard7?

Volume Calculator Pro is rated higher. Volume Calculator Pro averages 4.2 out of 5 from 6 ratings, while Guard7 averages 3.5 from 2 ratings.

### Do Volume Calculator Pro or Guard7 have ads?

Neither Volume Calculator Pro nor Guard7 shows ads.

### Which is updated more often, Volume Calculator Pro or Guard7?

Volume Calculator Pro ships an update every 31 months, and Guard7 daily. Most recently, Volume Calculator Pro was updated on October 24, 2026 and Guard7 on September 18, 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.*