# MAGNET Field Mobile vs Plei System

The clearest difference is update cadence: Plei System at every 5 weeks against MAGNET Field Mobile's every 4 months. Plei System also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MAGNET Field Mobile ships an update every 4 months, Plei System every 5 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | MAGNET Field Mobile | Plei System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (17 ratings)](https://appshunter.io/ios/app/magnet-field-mobile/id1029831646/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 648 MB | 18 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [Topcon Positioning Systems, Inc.](https://appshunter.io/developer/667040500) | [Plei, Inc.](https://appshunter.io/developer/1225574710) |

## What reviewers say

### MAGNET Field Mobile

[App page](https://appshunter.io/ios/app/magnet-field-mobile/id1029831646)

This app facilitates precise design layout and field measurements using Topcon/Sokkia Total Stations and GNSS receivers. It offers real-time positioning for guided navigation to project points and secure file exchange through a company account.

**Highlights:** Precise design layout, Field measurements, Assisted navigation, Real-time positioning, Secure file exchange, Company account login

**Features:** macOS Compatibility

**In-app purchases:** none


### Plei System

[App page](https://appshunter.io/ios/app/plei-system/id1293097304)

**In-app purchases:** none


## Frequently asked questions

### Is MAGNET Field Mobile free?

MAGNET Field Mobile is free to download, with no in-app purchases.

### Is Plei System free?

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

### Do MAGNET Field Mobile or Plei System have ads?

Neither MAGNET Field Mobile nor Plei System shows ads.

### Which is updated more often, MAGNET Field Mobile or Plei System?

MAGNET Field Mobile ships an update every 4 months, and Plei System every 5 weeks. Most recently, MAGNET Field Mobile was updated on October 4, 2026 and Plei System on October 6, 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.*