# 509 vs Hcalory

The clearest difference is review sentiment: Hcalory at 67% against 509's 21%. Hcalory also leads on rating (4.2 vs 2.5) and ads (none vs shown). 509's advantage is ratings volume (48 vs 10). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Hcalory holds the better App Store score, 4.2 against 2.5. Both are backed by a comparable volume of ratings — 48 and 10 respectively. Written reviews point the same way: 21% of 509's written reviews are positive against 67% of Hcalory's.

509 ships an update every 3 months, Hcalory every 4 weeks. The most recent releases landed on June 22, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | 509 | Hcalory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (48 ratings)](https://appshunter.io/ios/app/509/id1592726706/reviews) | **[4.2 (10 ratings)](https://appshunter.io/ios/app/hcalory/id6484163464/reviews)** |
| Number of ratings | **48** | 10 |
| Positive reviews | 21.3% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 25 MB | 24 MB |
| Requires iOS | **13.0** | 13.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teton Outfitters LLC](https://appshunter.io/developer/1478614281) | [HONG KONG TING HUI LIMITED](https://appshunter.io/developer/1740490084) |

## What reviewers say

### 509

[App page](https://appshunter.io/ios/app/509/id1592726706)

Control and customize heated goggles for optimal vision in any weather. Access an online store, watch snowmobile films, and receive product updates. Stay fog-free and prepared for winter adventures.

**Highlights:** Wireless heat profile customization, Auto and manual anti-fog modes, Online store access, Latest product release updates, Watch snowmobile films, Customer service access

**Features:** macOS Compatibility

**In-app purchases:** none


### Hcalory

[App page](https://appshunter.io/ios/app/hcalory/id6484163464)

Control your air heater remotely with this app. Monitor parameters, adjust temperature and gears, set schedules, and activate modes like plateau and ventilation. Designed for specific supported heater models.

**Highlights:** Remote heater control, Parameter monitoring, Temperature and gear adjustment, Plateau mode activation, Ventilation control, Scheduling functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is 509 free?

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

### Is Hcalory free?

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

### Which has better reviews, 509 or Hcalory?

Hcalory is rated higher. 509 averages 2.5 out of 5 from 48 ratings, while Hcalory averages 4.2 from 10 ratings.

### Do 509 or Hcalory have ads?

509 shows ads; Hcalory does not.

### Which is updated more often, 509 or Hcalory?

509 ships an update every 3 months, and Hcalory every 4 weeks. Most recently, 509 was updated on June 22, 2026 and Hcalory on August 19, 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.*