# NMRE eMeter vs Device Tracker

The clearest difference is in-app purchases: NMRE eMeter at none against Device Tracker's 2. Device Tracker's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Device Tracker sells 2 in-app purchases, starting at $6.99 per month. NMRE eMeter asks for nothing beyond the download.

NMRE eMeter ships an update every 3 weeks, Device Tracker every 9 days. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | NMRE eMeter | Device Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/device-tracker-oopti-finder/id6756211586/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 20 MB | 16 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [AXRA TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1615431045) | [OPTIMALBYTE LTD](https://appshunter.io/developer/1799229786) |

## What reviewers say

### NMRE eMeter

[App page](https://appshunter.io/ios/app/nmre-emeter/id6740324526)

**Features:** macOS Compatibility

**In-app purchases:** none


### Device Tracker

[App page](https://appshunter.io/ios/app/device-tracker-oopti-finder/id6756211586)

Quickly locate misplaced or lost devices with smart tracking and intuitive insights. View last known locations and enjoy a simple, secure, and fast experience. Stay connected to your devices with confidence.

**Highlights:** Locate misplaced or lost devices, View last known location, Simple and easy-to-use interface, Secure and privacy-focused, Fast setup and smooth performance, Optional premium features via subscription

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is NMRE eMeter free?

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

### Is Device Tracker free?

Device Tracker is free to download, with in-app purchases available.

### Do NMRE eMeter or Device Tracker have ads?

Neither NMRE eMeter nor Device Tracker shows ads.

### Which is updated more often, NMRE eMeter or Device Tracker?

NMRE eMeter ships an update every 3 weeks, and Device Tracker every 9 days. Most recently, NMRE eMeter was updated on October 28, 2026 and Device Tracker on October 26, 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.*