# Metric Conversion tool vs Army Knots

The clearest difference is update cadence: Metric Conversion tool at every 10 days against Army Knots's every 2 months. Metric Conversion tool also leads on ratings volume (15K vs 1.1K). Army Knots's advantage is review sentiment (88% vs 70%). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.8 for Metric Conversion tool against 4.8 for Army Knots. That said, the two scores are not equally well evidenced: Metric Conversion tool has 15K ratings behind it against 1.1K, so its average is the more settled of the two. Written reviews are what separate them: 70% of Metric Conversion tool's written reviews are positive against 88% of Army Knots's.

Metric Conversion tool ships an update every 10 days, Army Knots every 2 months. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Metric Conversion tool | Army Knots |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (15K ratings)](https://appshunter.io/ios/app/metric-conversion-tool/id1439430070/reviews) | [4.8 (1.1K ratings)](https://appshunter.io/ios/app/army-knots/id6446508160/reviews) |
| Number of ratings | **15K** | 1.1K |
| Positive reviews | 70.2% of reviews | **88.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free | Free |
| Size | 22 MB | 47 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Wight Hat](https://appshunter.io/developer/1425885740) | [Nynix](https://appshunter.io/developer/425939481) |

## What reviewers say

### Metric Conversion tool

[App page](https://appshunter.io/ios/app/metric-conversion-tool/id1439430070)

This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.

**Highlights:** Offline functionality, Over 30,000 unit conversions, 160+ currencies with live rates, Save favorite conversions, Answers in fractions, Up to 5 decimal places

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

**In-app purchases:** none

**What reviewers like**

- 💡 Useful conversion tool
- 👍 Easy to use and navigate
- 🚀 Quick and efficient
- 👍 Comprehensive coverage of conversions

**What reviewers complain about**

- 🔊 Intrusive and loud ads
- 🔒 Questionable privacy practices
- 🐛 Inaccurate conversions
- 👎 Disruptive to workflow

**Reported bugs**

- Temperature conversion displaying incorrect values
- Ads triggering false memory full warnings

**Requested features**

- Paid version to remove ads
- Option to display results in preferred format
- Speed conversion (mph, km/h, etc.)


### Army Knots

[App page](https://appshunter.io/ios/app/army-knots/id6446508160)

Master essential knots for military training and survival with interactive 3D models and step-by-step instructions. This app provides offline access to a comprehensive knot library, allowing users to track their progress and easily find the knots they need.

**Highlights:** Extensive knot library, Rotatable 3D knot models, Step-by-step instructions, Offline access, Mastered knots tracking, Knot search functionality

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

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive UI
- 🚀 Clear instructions
- 🚀 Helpful animations
- 👍 Practical knots
- 👍 Easy to understand

**What reviewers complain about**

- 🐛 Can be confusing for beginners
- 💡 Needs more knot options

**Reported bugs**

- Some users had trouble tightening the knots

**Requested features**

- Add more knot options
- Ability to practice tying knots on-screen
- Provide more background information on each knot


## Frequently asked questions

### Is Metric Conversion tool free?

Metric Conversion tool is free to download, with no in-app purchases.

### Is Army Knots free?

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

### Which has better reviews, Metric Conversion tool or Army Knots?

Metric Conversion tool and Army Knots are both rated 4.8 out of 5 on the App Store, from 15K and 1.1K ratings respectively.

### Do Metric Conversion tool or Army Knots have ads?

Neither Metric Conversion tool nor Army Knots shows ads.

### Which is updated more often, Metric Conversion tool or Army Knots?

Metric Conversion tool ships an update every 10 days, and Army Knots every 2 months. Most recently, Metric Conversion tool was updated on September 27, 2026 and Army Knots on September 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.*