# 509 vs Seattle Lakes

The clearest difference is review sentiment: Seattle Lakes at 100% against 509's 21%. Seattle Lakes also leads on rating (5.0 vs 2.5) and ads (none vs shown). 509's advantage is price (Free vs $1.99) and update cadence (every 3 months vs every 19 months). On in-app purchases, device support and iOS requirement there is nothing between them.

509 is free to download; Seattle Lakes costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seattle Lakes holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: 509 has 48 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 21% of 509's written reviews are positive against 100% of Seattle Lakes's.

509 ships an update every 3 months, Seattle Lakes every 19 months. Both last shipped on October 17, 2026.

## The numbers

| Metric | 509 | Seattle Lakes |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.5 (48 ratings)](https://appshunter.io/ios/app/509/id1592726706/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/seattle-lakes/id6501974343/reviews)** |
| Number of ratings | **48** | 2 |
| Positive reviews | 21.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 19 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#94** |
| Size | 25 MB | 23 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teton Outfitters LLC](https://appshunter.io/developer/1478614281) | [Ten Moments](https://appshunter.io/developer/1744093250) |

## 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


### Seattle Lakes

[App page](https://appshunter.io/ios/app/seattle-lakes/id6501974343)

**Currently charting:** #94 Top Paid · Lifestyle (US App Store)

Access real-time and historical lake temperature data for Lake Washington and Lake Sammamish. Plan your outdoor activities with confidence using accurate, up-to-date information and enjoy visually appealing Pacific Northwest-themed backgrounds.

**Highlights:** Real-time lake temperature readings, All-time record high and low temperatures, Current month's record highs and lows, Customizable temperature units (Fahrenheit/Celsius), Dynamic background images, Supports Lake Washington, Lake Sammamish, and Lake Union

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 509 free?

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

### Is Seattle Lakes free?

Seattle Lakes costs $1.99, with no in-app purchases.

### Which has better reviews, 509 or Seattle Lakes?

Seattle Lakes is rated higher. 509 averages 2.5 out of 5 from 48 ratings, while Seattle Lakes averages 5.0 from 2 ratings.

### Do 509 or Seattle Lakes have ads?

509 shows ads; Seattle Lakes does not.

### Which is updated more often, 509 or Seattle Lakes?

509 ships an update every 3 months, and Seattle Lakes every 19 months. Most recently, 509 was updated on October 17, 2026 and Seattle Lakes on October 17, 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.*