MillerTech vs Magnetometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MillerTech
Monitor your lithium batteries with Bluetooth technology. Get instant access to key battery stats like voltage, state-of-charge, and real-time power usage. Enhance your experience and gain peace of mind with at-a-glance data.
- Bluetooth battery monitoring
- Real-time power usage
- Battery voltage display
- State-of-Charge tracking
- Design and remaining capacity
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MillerTech Lithium Battery monitoring system with Bluetooth technology. A total game-changer, this app will give users the ability to see important battery stats and data at a glance. Meaning now you can spend more time doing what matters and less time guessing! With this technology the user has instant access to, Battery voltage Battery State-of-Charge Real time power usage Design capacity Remaining capacity We believe these capabilities will forever enhance your experience, giving you the piece of mind that you deserve!
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.
Screenshots
Verdict
The clearest difference is price: MillerTech at Free against Magnetometer's $0.99. MillerTech also leads on update cadence (every 2 months vs every 34 months) and review sentiment (100% vs 86%). On rating, ratings volume, ads and in-app purchases 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
MillerTech is free to download; Magnetometer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.3 for MillerTech against 4.4 for Magnetometer. Both are backed by a comparable volume of ratings — 6 and 13 respectively. Written reviews are what separate them: 100% of MillerTech's written reviews are positive against 86% of Magnetometer's.
MillerTech ships an update every 2 months, Magnetometer every 34 months. The most recent releases landed on June 10, 2026 and September 22, 2026 respectively.
| Parameter | MillerTech | Magnetometer |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.3 (6 ratings) | 4.4 (13 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 85.7% of reviews |
| Number of ratings | 6 | 13 — better |
| Update frequency | Every 2 months — better | Every 34 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 42 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Lester Miller | Bogdan Gavriluta |
Customer experience
MillerTech
Magnetometer
In-app purchases
MillerTech
No in-app purchases
Magnetometer
No in-app purchases
Questions
Is MillerTech free?
Is Magnetometer free?
Which has better reviews, MillerTech or Magnetometer?
Do MillerTech or Magnetometer have ads?
Which is updated more often, MillerTech or Magnetometer?
Other comparisons
