# Inch Millimeter Converter vs TrollDepth

The clearest difference is update cadence: TrollDepth at every 3 weeks against Inch Millimeter Converter's every 14 months. Inch Millimeter Converter's advantage is price ($0.99 vs $4.99) and iOS requirement (13.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Inch Millimeter Converter costs $0.99 and TrollDepth $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Inch Millimeter Converter ships an update every 14 months, TrollDepth every 3 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Inch Millimeter Converter | TrollDepth |
| --- | --- | --- |
| Price | **$0.99** | $4.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/inch-millimeter-converter/id1084631522/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 5 MB | 5 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Comet Network Technology](https://appshunter.io/developer/510893994) | [Matthew Frost](https://appshunter.io/developer/6776035082) |

## What reviewers say

### Inch Millimeter Converter

[App page](https://appshunter.io/ios/app/inch-millimeter-converter/id1084631522)

Easily convert measurements between millimeters and inches. Supports decimal, fractional, and mixed inch inputs. Results are displayed instantly and can be copied.

**Highlights:** Millimeter to inch conversion, Inch to millimeter conversion, Decimal and fractional input, Instant conversion results, Copy results to clipboard, Woodworking specific utility

**Features:** macOS Compatibility

**In-app purchases:** none


### TrollDepth

[App page](https://appshunter.io/ios/app/trolldepth/id6776035080)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inch Millimeter Converter free?

Inch Millimeter Converter costs $0.99, with no in-app purchases.

### Is TrollDepth free?

TrollDepth costs $4.99, with no in-app purchases.

### Do Inch Millimeter Converter or TrollDepth have ads?

Neither Inch Millimeter Converter nor TrollDepth shows ads.

### Which is updated more often, Inch Millimeter Converter or TrollDepth?

Inch Millimeter Converter ships an update every 14 months, and TrollDepth every 3 weeks. Most recently, Inch Millimeter Converter was updated on November 6, 2026 and TrollDepth on November 5, 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.*