# synchroCalc vs VPN

The clearest difference is rating: synchroCalc at 5.0 against VPN's 4.2. synchroCalc also leads on ads (none vs shown) and review sentiment (71% vs 54%). VPN's advantage is update cadence (weekly vs every 4 months) and ratings volume (7.3K vs 3). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. synchroCalc sells 1 one-off in-app purchase and VPN sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

synchroCalc holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: VPN has 7.3K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 71% of synchroCalc's written reviews are positive against 54% of VPN's.

synchroCalc ships an update every 4 months, VPN weekly. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | synchroCalc | VPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/synchrocalc/id1073411743/reviews)** | [4.2 (7.3K ratings)](https://appshunter.io/ios/app/vpn-fast-secure-no-limits/id6443951277/reviews) |
| Number of ratings | 3 | **7.3K** |
| Positive reviews | **70.6% of reviews** | 53.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 129 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akeome Studio](https://appshunter.io/developer/1044573722) | [com.stolitomson.vpn](https://appshunter.io/developer/1650934636) |

## What reviewers say

### synchroCalc

[App page](https://appshunter.io/ios/app/synchrocalc/id1073411743)

This utility converts numbers between binary, decimal, and hexadecimal formats. It offers adjustable bit sizes and supports various arithmetic and bitwise operations, ideal for developers and engineers.

**Highlights:** Binary, decimal, hexadecimal display, Adjustable bit sizes (64/32/16/8-bit), Signed/unsigned number switching, 12 arithmetic and bitwise operations, Copy/paste functionality, Supports iPhone, iPad, and iPod touch

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & display expression | $1.99 | one-time |


### VPN

[App page](https://appshunter.io/ios/app/vpn-fast-secure-no-limits/id6443951277)

Access websites and services securely and anonymously with a single touch. This application offers a fast and unlimited VPN experience, helping to protect your network security and potentially improve game speeds. Enjoy global server access with minimal ads.

**Highlights:** One-touch access to websites and services, Fast and unlimited VPN connection, Global server network, Maximum security and anonymity, Network security protection, Game speed optimization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $4.99 | per month |
| 6 months | $14.99 | per 6 months |
| 1 Year | $22.49 | per year |

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Easy to use
- 🔒 Reliable security
- 💡 Innovative features
- 🥰 Excellent user experience

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔋 High battery consumption
- ⚠️ Inconsistent performance
- 💸 Paid features not worth the cost

**Reported bugs**

- Inability to connect to servers
- Sudden disconnections during use
- App freezes and becomes unresponsive
- Compatibility issues with newer OS versions

**Requested features**

- More server location options
- Improved stability and reliability
- Automatic reconnection after disconnects
- Reduced ads and in-app purchases


## Frequently asked questions

### Is synchroCalc free?

synchroCalc is free to download, with in-app purchases available.

### Is VPN free?

VPN is free to download, with in-app purchases available.

### Which has better reviews, synchroCalc or VPN?

synchroCalc is rated higher. synchroCalc averages 5.0 out of 5 from 3 ratings, while VPN averages 4.2 from 7.3K ratings.

### Do synchroCalc or VPN have ads?

VPN shows ads; synchroCalc does not.

### Which is updated more often, synchroCalc or VPN?

synchroCalc ships an update every 4 months, and VPN weekly. Most recently, synchroCalc was updated on November 2, 2026 and VPN on November 8, 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.*