# Synapse vs Magnetometer

The clearest difference is price: Synapse at Free against Magnetometer's $0.99. Synapse also leads on update cadence (every 7 months vs every 34 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Synapse is free to download; Magnetometer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Synapse ships an update every 7 months, Magnetometer every 34 months. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Synapse | Magnetometer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[4.4 (13 ratings)](https://appshunter.io/ios/app/magnetometer/id1662997574/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 34 months |
| Monetization | — | Paid |
| Size | 78 MB | 2 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zinc Digital](https://appshunter.io/developer/1147605401) | [Bogdan Gavriluta](https://appshunter.io/developer/1584690995) |

## What reviewers say

### Synapse

[App page](https://appshunter.io/ios/app/synapse-graff/id1567939772)

**Features:** macOS Compatibility

**In-app purchases:** none


### Magnetometer

[App page](https://appshunter.io/ios/app/magnetometer/id1662997574)

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.

**Highlights:** Detects metal and magnets, Uses iPhone's compass, Measures EMF interference, Fun and experimental use, Simple user interface

**In-app purchases:** none


## Frequently asked questions

### Is Synapse free?

Synapse is free to download, with no in-app purchases.

### Is Magnetometer free?

Magnetometer costs $0.99, with no in-app purchases.

### Do Synapse or Magnetometer have ads?

Neither Synapse nor Magnetometer shows ads.

### Which is updated more often, Synapse or Magnetometer?

Synapse ships an update every 7 months, and Magnetometer every 34 months. Most recently, Synapse was updated on October 10, 2026 and Magnetometer on October 9, 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.*