# Conversion Calculator Units vs Pottery Tracker

The clearest difference is monetization model: Conversion Calculator Units at free with in-app purchases against Pottery Tracker's subscription. Conversion Calculator Units also leads on iOS requirement (15.0 vs 17.0). Pottery Tracker's advantage is ads (none vs shown) and update cadence (monthly vs every 2 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Conversion Calculator Units sells 1 one-off in-app purchase and Pottery Tracker sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Conversion Calculator Units ships an update every 2 months, Pottery Tracker monthly. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Conversion Calculator Units | Pottery Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews)** | — |
| Number of ratings | **5K** | — |
| Positive reviews | 82.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 41 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RV AppStudios LLC](https://appshunter.io/developer/340181308) | [Joshua Wilburne](https://appshunter.io/developer/1816301970) |

## What reviewers say

### Conversion Calculator Units

[App page](https://appshunter.io/ios/app/conversion-calculator-units/id727632233)

This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.

**Highlights:** Converts over 140 units, Supports 12 conversion categories, Customizable themes, Drag and set unit positions, Add units to favorites, Share converted units via email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 User-friendly
- 🚀 Easy to use
- 💡 Helpful for learning metric system
- 👍 Great for conversions
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Ads disrupt usage
- 🐛 Difficult to change units
- 🐛 Lacks portrait mode
- 🐛 Upside-down orientation issues
- 🐛 Cluttered UI design

**Reported bugs**

- Ads not removed after purchase
- Incorrect unit conversions

**Requested features**

- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order


### Pottery Tracker

[App page](https://appshunter.io/ios/app/pottery-tracker/id6758213839)

Organize your pottery projects with this app. Document each piece from creation to finish with photos, status updates, and detailed tags for glazes and clay. Find your work easily and track your creative process.

**Highlights:** Photo timeline of work evolution, Status tracking for each stage, Glaze and clay body tagging, Offline functionality, Quick photo capture, Studio calendar integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Conversion Calculator Units free?

Conversion Calculator Units is free to download, with in-app purchases available.

### Is Pottery Tracker free?

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

### Do Conversion Calculator Units or Pottery Tracker have ads?

Conversion Calculator Units shows ads; Pottery Tracker does not.

### Which is updated more often, Conversion Calculator Units or Pottery Tracker?

Conversion Calculator Units ships an update every 2 months, and Pottery Tracker monthly. Most recently, Conversion Calculator Units was updated on October 13, 2026 and Pottery Tracker on October 7, 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.*