# pulse.eco vs A2O

The clearest difference is rating: pulse.eco at 5.0 against A2O's 2.0. pulse.eco also leads on update cadence (every 3 months vs every 11 months) and ratings volume (4 vs 1). A2O's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

pulse.eco holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

pulse.eco ships an update every 3 months, A2O every 11 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | pulse.eco | A2O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/pulseeco/id1325651447/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/a2o/id6443875849/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 11 MB | 188 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Netcetera AG](https://appshunter.io/developer/293648835) | [Aquaporin](https://appshunter.io/developer/1573920954) |

## What reviewers say

### pulse.eco

[App page](https://appshunter.io/ios/app/pulseeco/id1325651447)

Monitor real-time environmental data like air pollution, noise levels, and temperature in your city. Contribute to a growing sensor network and open-source code to foster sustainable development.

**Highlights:** Real-time environmental data monitoring, Air pollution tracking, Urban noise hot spot identification, Temperature and humidity readings, Crowdsourcing platform integration, Contribute to sensor network expansion, Open-source code contribution

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

**In-app purchases:** none


### A2O

[App page](https://appshunter.io/ios/app/a2o/id6443875849)

Manage your water purifier from your smartphone, track real-time water usage, and receive timely filter change reminders. Access product manuals and helpful water information.

**Highlights:** Connect and manage water purifier, Track real-time water usage, Filter change reminders, Maintenance guidance, Access product manuals, View purification effectiveness

**In-app purchases:** none


## Frequently asked questions

### Is pulse.eco free?

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

### Is A2O free?

A2O is free to download, with no in-app purchases.

### Which has better reviews, pulse.eco or A2O?

pulse.eco is rated higher. pulse.eco averages 5.0 out of 5 from 4 ratings, while A2O averages 2.0 from 1 ratings.

### Do pulse.eco or A2O have ads?

Neither pulse.eco nor A2O shows ads.

### Which is updated more often, pulse.eco or A2O?

pulse.eco ships an update every 3 months, and A2O every 11 months. Most recently, pulse.eco was updated on September 18, 2026 and A2O on June 1, 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.*