NMF.earth vs Purrer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NMF.earth
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.
- Calculate CO2 emissions
- Define carbon budget
- Track monthly limits
- Reduce carbon footprint
- Actionable insights
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Understand and reduce your carbon footprint. Define your carbon budget and take action to stay on track with your monthly limits.
Purrer
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.
- Virtual cat petting
- Choose cat breeds
- Relaxation and stress relief
- Pocket-sized companion
- Use anywhere
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Pet, purr, and relax… no hairballs Purrer is a virtual cat petting app, a simple way to relax and wind down with pets and purrs anywhere you go. A moment of calm while traveling, at work, school, or waiting on hold. Choose your favorite cat breed and pet your purring pocket pet. Carry your hypoallergenic pocket cat wherever you go. • Choose your favorite cat breed and pet until calm • Use Purrer anywhere, between tasks or before sleep for a quick reset1 • Petting and purring cue a natural relaxation response, a physiological counter to stress2 • Pet, purr, and unwind3 with your virtual pocket cat • All purrs, no scratches, no litterbox
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | NMF.earth | Purrer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 6 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Pierre Bresson | Reason Interactive |
Customer experience
NMF.earth
Purrer
In-app purchases
NMF.earth
No in-app purchases
Purrer
No in-app purchases
