Comparison

SMD vs HTMLCollection

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

SMD

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
Read full description

SMD is a watchOS app that turns Apple Watch into a magnetic detector and provides haptic alerts for nearby magnetic field changes. You can switch between the analog clock screen and the Settings screen with a swipe. SMD offers two operating modes: Manual Mode and Motion Mode. In Manual Mode, detection starts and stops with a tap. In Motion Mode, raising the wrist starts the sensor, and briefly holding still completes the set process and makes the app ready to use. Lowering the wrist stops sensing. Motion Mode also supports tap-based OFF and re-set actions. Detection and alerts become active only after baseline acquisition is complete. Sensitivity can be adjusted from the Settings screen using the Digital Crown. The Settings screen shows ON / OFF status, X / Y / Z values, mode switching, sensitivity, and version information. When magnetic reference is inactive, X / Y / Z values are shown as -.--. Key Features - Magnetic detector functionality using Apple Watch - Haptic alerts - Manual Mode and Motion Mode - Sensitivity adjustment with the Digital Crown - X / Y / Z value display - Automatic polarity detection - Stable single-trigger alert behavior Important Notes - Do not use magnetic watch bands - Strong magnets may temporarily affect sensor readings - Apple Watch Series 10 or later is recommended

About

HTMLCollection

Features
Read full description

Keep the HTML you use close at hand. HTML Collection is a simple way to save, organize, and view HTML source itselfβ€”not just bookmark its URL. Store templates, snippets, test pages, HTML-based notes, and other reusable content. Preview saved HTML instantly, edit the source, and update it whenever needed. Tap + in your library to write or paste HTML, or import HTML files. Files with existing names are saved as separate, numbered cards, so you can keep both copies in your library. Key Features β€’ Enter or paste HTML source and import HTML files β€’ Open saved HTML source offline β€’ Edit HTML with optional line wrapping β€’ Organize items with collections, icons, and colors β€’ Search by title or filename β€’ Export as HTML files, PDFs, or full-page images β€’ Open recent HTML from a Home Screen widget β€’ Sync across devices with iCloud β€’ Save and restore previous versions When your devices are signed in to iCloud with the same Apple Account, saved HTML, history, titles, collections, and other organization details stay in sync. History Plus The free version lets you restore and edit the latest history entry. A one-time History Plus purchase unlocks up to 10 history entries, protected versions, and notes for each version. Save, organize, and view HTML comfortably on iPhone and iPad. HTML Collection is your personal library for the HTML you want to keep and reuse. External images, styles, scripts, and other linked resources may require an internet connection.

Screenshots

HTMLCollection4 screens

Verdict

The call

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.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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.

UpkeepUpdate frequency

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

Scorecard4 real differences Β· 4 level
SMD versus HTMLCollection: the parameters behind the verdict, then further details
ParameterSMDHTMLCollection
Price$19.99Free β€” better
Positive reviews50.0% of reviewsβ€”
Update frequencyWeekly β€” betterEvery 2 months
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationPaidβ€”
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS26.018.6 β€” better
Further details β€” not scored
Size1 MB4 MB
Age rating4+4+
DeveloperYOSHINOBU HONGOShigeki Karouji

In-app purchases

None

SMD

No in-app purchases

1 purchases

HTMLCollection

One-time1
  • History Plus: Extended History$0.49

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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