# Nucleus EMR vs MSR Mail Tracker

Nucleus EMR and MSR Mail Tracker are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Nucleus EMR ships an update every 2 months, MSR Mail Tracker every 3 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Nucleus EMR | MSR Mail Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 87 MB | 21 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [cSoft Technologies Private Limited](https://appshunter.io/developer/1453352293) | [TRACKEX LLC](https://appshunter.io/developer/1492982032) |

## What reviewers say

### Nucleus EMR

[App page](https://appshunter.io/ios/app/nucleus-emr/id1453352294)

**Features:** macOS Compatibility

**In-app purchases:** none


### MSR Mail Tracker

[App page](https://appshunter.io/ios/app/msr-mail-tracker/id6449599992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nucleus EMR free?

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

### Is MSR Mail Tracker free?

MSR Mail Tracker is free to download, with no in-app purchases.

### Do Nucleus EMR or MSR Mail Tracker have ads?

Neither Nucleus EMR nor MSR Mail Tracker shows ads.

### Which is updated more often, Nucleus EMR or MSR Mail Tracker?

Nucleus EMR ships an update every 2 months, and MSR Mail Tracker every 3 months. Most recently, Nucleus EMR was updated on October 26, 2026 and MSR Mail Tracker on October 30, 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.*