# Convertology vs CoilTrail

The clearest difference is rating: CoilTrail at 5.0 against Convertology's 4.0. CoilTrail also leads on ads (none vs shown) and device support (3 vs 1). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Convertology sells 2 in-app purchases, starting at $3.99 per 7 days and CoilTrail sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

CoilTrail holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Convertology ships an update every 6 days, CoilTrail every 5 days. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Convertology | CoilTrail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/convertology/id6764801500/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coiltrail/id6782458017/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 53 MB | 87 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ADNAN STRUJIC](https://appshunter.io/developer/1895920092) | [ANTTI-PEKKA DAVIDSSON](https://appshunter.io/developer/6782458019) |

## What reviewers say

### Convertology

[App page](https://appshunter.io/ios/app/convertology/id6764801500)

This utility app offers precise unit conversions across a vast range of categories, from everyday measurements to specialized scientific and engineering units. It features a clean interface with quick search, favorites, history, and adjustable precision for efficient use in various settings.

**Highlights:** Extensive unit categories, Quick unit search, Favorites and history, Adjustable result precision, Light and dark mode interface, Copy and share results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Yearly Premium | $29.99 | per year |


### CoilTrail

[App page](https://appshunter.io/ios/app/coiltrail/id6782458017)

This app helps metal detectorists log their finds and map their search areas. It records your route, logs treasure locations with photos and depth, and offers advanced mapping features. Analyze your findings and equipment performance to improve your treasure hunting success.

**Highlights:** GPS route tracking, Log finds with photos and depth, 3D LiDAR and Hillshade maps, Advanced soil and topography maps, Distance and area measuring tools, Metal detecting logbook and stats, Landowner permission logging, Export findings to CSV/PDF

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoilTrail Pro monthly | $3.99 | per month |
| CoilTrail Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is Convertology free?

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

### Is CoilTrail free?

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

### Which has better reviews, Convertology or CoilTrail?

CoilTrail is rated higher. Convertology averages 4.0 out of 5 from 1 ratings, while CoilTrail averages 5.0 from 1 ratings.

### Do Convertology or CoilTrail have ads?

Convertology shows ads; CoilTrail does not.

### Which is updated more often, Convertology or CoilTrail?

Convertology ships an update every 6 days, and CoilTrail every 5 days. Most recently, Convertology was updated on October 19, 2026 and CoilTrail on October 14, 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.*