# Tug Calc vs ToolsUnitConverter

The clearest difference is in-app purchases: ToolsUnitConverter at none against Tug Calc's 4. Tug Calc's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tug Calc sells 4 in-app purchases, starting at $0.99 per month. ToolsUnitConverter asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tug Calc | ToolsUnitConverter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Size | 54 MB | 3 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [成 熊](https://appshunter.io/developer/1642462750) |

## What reviewers say

### Tug Calc

[App page](https://appshunter.io/ios/app/tug-calc/id6744523761)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscriptions | $0.99 | per month |
| Quarterly Subscriptions | $0.99 | per 3 months |
| Annual Subscription | $2.99 | per year |
| Perpetual Subscription | $4.99 | one-time |


### ToolsUnitConverter

[App page](https://appshunter.io/ios/app/toolsunitconverter/id6754634175)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is Tug Calc free?

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

### Is ToolsUnitConverter free?

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

### Do Tug Calc or ToolsUnitConverter have ads?

Neither Tug Calc nor ToolsUnitConverter shows ads.

### Which is updated more often, Tug Calc or ToolsUnitConverter?

Tug Calc ships an update every 5 days, and ToolsUnitConverter every 5 days. Most recently, Tug Calc was updated on October 28, 2026 and ToolsUnitConverter on October 24, 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.*