# NMF.earth vs Purrer

The clearest difference is update cadence: Purrer at every 5 days against NMF.earth's every 6 weeks. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for NMF.earth against 5.0 for Purrer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

NMF.earth ships an update every 6 weeks, Purrer every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NMF.earth | Purrer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nmfearth/id1494561829/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/purrer/id6773021853/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | Free |
| Size | 42 MB | 11 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pierre Bresson](https://appshunter.io/developer/886617892) | [Reason Interactive](https://appshunter.io/developer/333333690) |

## What reviewers say

### NMF.earth

[App page](https://appshunter.io/ios/app/nmfearth/id1494561829)

Track and decrease your environmental impact by understanding your carbon footprint. Set personal emission goals and monitor your progress monthly to stay within your budget.

**Highlights:** Calculate CO2 emissions, Define carbon budget, Track monthly limits, Reduce carbon footprint, Actionable insights

**Features:** macOS Compatibility

**In-app purchases:** none


### Purrer

[App page](https://appshunter.io/ios/app/purrer/id6773021853)

A virtual cat petting app designed for relaxation and stress relief. Choose your favorite cat breed and enjoy calming purrs and petting anywhere, anytime. It's a hypoallergenic pocket companion for moments of calm.

**Highlights:** Virtual cat petting, Choose cat breeds, Relaxation and stress relief, Pocket-sized companion, Use anywhere

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

**In-app purchases:** none


## Frequently asked questions

### Is NMF.earth free?

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

### Is Purrer free?

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

### Which has better reviews, NMF.earth or Purrer?

NMF.earth and Purrer are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do NMF.earth or Purrer have ads?

Neither NMF.earth nor Purrer shows ads.

### Which is updated more often, NMF.earth or Purrer?

NMF.earth ships an update every 6 weeks, and Purrer every 5 days. Most recently, NMF.earth was updated on November 3, 2026 and Purrer on October 31, 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.*