Magnetometer vs Atomic Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Magnetometer
This application uses your iPhone's compass to detect electromagnetic interference, helping you find metal objects or magnets. It's designed for fun and experimental purposes, not as a professional tool. Discover hidden metal items or simply explore the magnetic fields around you.
- Detects metal and magnets
- Uses iPhone's compass
- Measures EMF interference
- Fun and experimental use
- Simple user interface
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Magnetometer is a fun app for finding metal or magnets by detecting EMF interference with your iPhone's compass heading. Find your keys, or just have fun discovering what could be made of metal. Magnetometer is not meant to replace an actual, professional-grade metal detector. Magnetometer presents simple information to the user about the interference experiences. For more scientific data, please turn to other great apps on the App Store. Magnetometer is made for fun and for experimental purposes and is not designed for scientific use. Also, don't drop your iPhone in sand hoping to find treasure; it's risky.
Atomic Sync
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Sync Your Radio-Controlled Watch in Minutes! Atomic Sync emulates official atomic time signals to synchronize your radio-controlled watch — no tower reception needed. Works with Casio G-Shock, Citizen, Lacrosse, Junghans, Braun and other atomic watches. SUPPORTED TIME SIGNALS: • WWVB (60 kHz) — United States • DCF77 (77.5 kHz) — Germany / Europe • JJY40 / JJY60 (40/60 kHz) — Japan • MSF (60 kHz) — United Kingdom • BPC (68.5 kHz) — China • RBU (66.66 kHz) — Russia HOW IT WORKS: 1. Select your region or time signal 2. Place your phone near your watch (see visual guide) 3. Tap Start and wait 1-10 minutes 4. Your watch syncs to atomic time — done! BEAST MODE (Premium Sync): Need faster sync? Watch a short rewarded video to activate Beast Mode — our enhanced signal algorithm for quicker, more reliable synchronization. Unlimited use, no subscriptions. SMART REMINDERS: Set local notifications to remind you to sync your watch daily, weekly, bi-weekly, monthly or custom. Never lose atomic precision again. OFFLINE & ACCURATE: • All signals generated locally — no internet required for sync • Optional NTP time source sync for maximum accuracy when online • Last known time cached for offline use USER-FRIENDLY DESIGN: • Dark/Light theme (auto-switch) • Universal positioning guide with animated signal waves • Simple 4-step flow, no brand selection needed • 16 languages supported PRIVACY FIRST: • No location access required • No personal data collected • No account registration needed COMPATIBLE WITH: Casio G-Shock, Pro Trek, Edifice • Citizen Eco-Drive • Lacrosse Technology • Junghans Mega • Braun watches • And any watch supporting WWVB/DCF77/JJY/MSF/BPC signals. TIPS FOR SUCCESS: • Use maximum phone volume during sync • Keep phone and watch still, 2-10 cm apart • Avoid metal surfaces and electronic interference DISCLAIMER: Atomic Sync is a third-party tool and is not affiliated with, endorsed by, or connected to Casio, Citizen, or any watch manufacturer. Time signal emulation is for personal use only. Success depends on watch model, environment, and device hardware.
Screenshots
Verdict
The clearest difference is price: Atomic Sync at Free against Magnetometer's $0.99. Atomic Sync also leads on update cadence (fortnightly vs every 34 months) and device support (3 vs 1). Magnetometer's advantage is ads (none vs shown). On in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Atomic Sync is free to download; Magnetometer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Magnetometer ships an update every 34 months, Atomic Sync fortnightly. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.
| Parameter | Magnetometer | Atomic Sync |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.4 (13 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 34 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Bogdan Gavriluta | Serhii Sereda |
In-app purchases
Magnetometer
No in-app purchases
Atomic Sync
No in-app purchases
Questions
Is Magnetometer free?
Is Atomic Sync free?
Do Magnetometer or Atomic Sync have ads?
Which is updated more often, Magnetometer or Atomic Sync?
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