# SMD vs HTMLCollection

The clearest difference is price: HTMLCollection at Free against SMD's $19.99. HTMLCollection also leads on iOS requirement (18.6 vs 26.0). SMD's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 2 months). On ads and device support there is nothing between them.

HTMLCollection is free to download; SMD costs $19.99 up front. HTMLCollection sells 1 one-off in-app purchase. SMD asks for nothing beyond the download.

SMD ships an update weekly, HTMLCollection every 2 months. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | SMD | HTMLCollection |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Paid | — |
| Size | 1 MB | 4 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YOSHINOBU HONGO](https://appshunter.io/developer/1678909753) | [Shigeki Karouji](https://appshunter.io/developer/975941302) |

## What reviewers say

### SMD

[App page](https://appshunter.io/ios/app/smd-simple-magnetic-detector/id6446756301)

This tool for Apple Watch detects magnetic fields, offering detailed sensor views and customizable notifications. It provides polarity-specific haptic feedback and is recommended for Series 6 and later models for optimal performance.

**Highlights:** Magnetic field component monitoring (X, Y, Z), Customizable sensitivity, Notification interval settings, Significant change detection alerts, Polarity-specific haptic feedback, Analog Watch Mode for optimal performance

**Features:** Apple Watch app

**In-app purchases:** none


### HTMLCollection

[App page](https://appshunter.io/ios/app/htmlcollection/id6756459786)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| History Plus: Extended History | $0.49 | one-time |


## Frequently asked questions

### Is SMD free?

SMD costs $19.99, with no in-app purchases.

### Is HTMLCollection free?

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

### Do SMD or HTMLCollection have ads?

Neither SMD nor HTMLCollection shows ads.

### Which is updated more often, SMD or HTMLCollection?

SMD ships an update weekly, and HTMLCollection every 2 months. Most recently, SMD was updated on October 15, 2026 and HTMLCollection on October 19, 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.*