# Heyrex vs ONMOON

The clearest difference is review sentiment: ONMOON at 100% against Heyrex's 33%. Heyrex's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, update cadence, 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.

Heyrex ships an update every 2 months, ONMOON monthly. The most recent releases landed on September 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Heyrex | ONMOON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onmoon/id6754182432/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 21 MB | 25 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Heyrex International Limited](https://appshunter.io/developer/1149647118) | [Evgeniya Barinova](https://appshunter.io/developer/1838081944) |

## What reviewers say

### Heyrex

[App page](https://appshunter.io/ios/app/heyrex/id1149647119)

This app monitors your dog's activity, location, and well-being, alerting you to concerning changes in behavior. It provides real-time data, historical summaries, and rewards for proactive pet care.

**Highlights:** Activity and location monitoring, Well-being score and alerts, Behavioral pattern analysis, Real-time temperature alerts, Reward points system, Daily, weekly, monthly summaries, Pet care diary

**Features:** macOS Compatibility

**In-app purchases:** none


### ONMOON

[App page](https://appshunter.io/ios/app/onmoon/id6754182432)

This app offers simple, playful tools for anxiety relief, turning mental health support into an enjoyable experience. It features interactive gratitude exercises, calming breathing techniques, and achievable self-care tracking. Designed by and for anxious individuals, it provides immediate support without feeling like a chore.

**Highlights:** Interactive gratitude bubble popping, Guided breathing exercises with visual cues, Micro-win tracking for self-care, Affirmations and mood boosts, Community-contributed motivational quotes

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

**In-app purchases:** none


## Frequently asked questions

### Is Heyrex free?

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

### Is ONMOON free?

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

### Do Heyrex or ONMOON have ads?

Neither Heyrex nor ONMOON shows ads.

### Which is updated more often, Heyrex or ONMOON?

Heyrex ships an update every 2 months, and ONMOON monthly. Most recently, Heyrex was updated on September 23, 2026 and ONMOON on October 6, 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.*