# EMF Meter vs OBD2 Ninja

The clearest difference is update cadence: OBD2 Ninja at every 3 days against EMF Meter's every 2 months. EMF Meter's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

EMF Meter costs $0.99 and OBD2 Ninja $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EMF Meter ships an update every 2 months, OBD2 Ninja every 3 days. The most recent releases landed on September 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | EMF Meter | OBD2 Ninja |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 58 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PPLST Tech](https://appshunter.io/developer/1832748300) | [Cory Green](https://appshunter.io/developer/1656262598) |

## What reviewers say

### EMF Meter

[App page](https://appshunter.io/ios/app/emf-meter/id6756597802)

Monitor electromagnetic field levels and Bluetooth exposure with real-time readings and safety zone indicators. Understand signal strength and exposure levels around you for awareness at home, work, or while traveling.

**Highlights:** Real-time EMF readings, Bluetooth device scanning, Signal strength in dBm, Safety zone indicators, Visual EMF analytics, Dark and light themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OBD2 Ninja

[App page](https://appshunter.io/ios/app/obd2-ninja-car-code-reader/id6794873767)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EMF Meter free?

EMF Meter costs $0.99, with no in-app purchases.

### Is OBD2 Ninja free?

OBD2 Ninja costs $0.99, with no in-app purchases.

### Do EMF Meter or OBD2 Ninja have ads?

Neither EMF Meter nor OBD2 Ninja shows ads.

### Which is updated more often, EMF Meter or OBD2 Ninja?

EMF Meter ships an update every 2 months, and OBD2 Ninja every 3 days. Most recently, EMF Meter was updated on September 20, 2026 and OBD2 Ninja 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.*