# CalaWeather vs H2Zero

The clearest difference is rating: H2Zero at 5.0 against CalaWeather's 3.0. H2Zero also leads on update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

H2Zero holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 6 respectively.

CalaWeather ships an update every 2 months, H2Zero every 3 weeks. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | CalaWeather | H2Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/calaweather/id1174424733/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/h2zero/id1602519505/reviews)** |
| Number of ratings | 4 | **6** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 235 MB | 94 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Lorac Communications Inc.](https://appshunter.io/developer/1174424732) | [Shane Woodley](https://appshunter.io/developer/1602519507) |

## What reviewers say

### CalaWeather

[App page](https://appshunter.io/ios/app/calaweather/id1174424733)

Provides hyper-local weather information with high-resolution radar and satellite imagery. Get detailed forecasts, future radar, and severe weather alerts to stay informed and safe.

**Highlights:** 250 meter radar resolution, High-resolution satellite imagery, Future radar for severe weather tracking, Current weather updated multiple times per hour, Daily and hourly forecasts, Save favorite locations, Opt-in severe weather push alerts

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

**In-app purchases:** none


### H2Zero

[App page](https://appshunter.io/ios/app/h2zero/id1602519505)

This service monitors your water tank levels remotely. Receive alerts and track your water supply efficiently. Ideal for ensuring you always have adequate water.

**Highlights:** Remote water tank monitoring, Level tracking, Alerts for water supply, Efficient water management

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

**In-app purchases:** none


## Frequently asked questions

### Is CalaWeather free?

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

### Is H2Zero free?

H2Zero is free to download, with no in-app purchases.

### Which has better reviews, CalaWeather or H2Zero?

H2Zero is rated higher. CalaWeather averages 3.0 out of 5 from 4 ratings, while H2Zero averages 5.0 from 6 ratings.

### Do CalaWeather or H2Zero have ads?

Neither CalaWeather nor H2Zero shows ads.

### Which is updated more often, CalaWeather or H2Zero?

CalaWeather ships an update every 2 months, and H2Zero every 3 weeks. Most recently, CalaWeather was updated on October 1, 2026 and H2Zero on October 2, 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.*