# Watch Chartplotter vs Surflens

The clearest difference is price: Surflens at Free against Watch Chartplotter's $9.99. Surflens also leads on ratings volume (24 vs 1). Watch Chartplotter's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Surflens is free to download; Watch Chartplotter costs $9.99 up front. Surflens sells 2 in-app purchases, starting at $7.99 per month. Watch Chartplotter asks for nothing beyond the download.

Watch Chartplotter holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Surflens has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Watch Chartplotter's written reviews are positive against 92% of Surflens's.

Watch Chartplotter ships an update weekly, Surflens fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Watch Chartplotter | Surflens |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watch-chartplotter/id6459739045/reviews)** | [4.7 (24 ratings)](https://appshunter.io/ios/app/surflens-ai-surf-camera/id6757678275/reviews) |
| Number of ratings | 1 | **24** |
| Positive reviews | **100.0% of reviews** | 91.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Paid | **Ad-supported** |
| Size | 10 MB | 145 MB |
| Requires iOS | **26.0** | 26.1 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | +17 |
| Developer | [Evan Hallein](https://appshunter.io/developer/336761283) | [Workstories, Inc.](https://appshunter.io/developer/1580937218) |

## What reviewers say

### Watch Chartplotter

[App page](https://appshunter.io/ios/app/watch-chartplotter/id6459739045)

This performance marine GPS transforms your Apple Watch into a tactical racing computer. It provides real-time speed, VMG, distance to mark, and offline marine charts for competitive sailors and windsurfers. Plan courses on your iPhone and sync them directly to your watch for seamless navigation.

**Highlights:** Real-time VMG and speed metrics, Waypoint navigation with haptic feedback, Offline marine charts (NOAA, AHO, OpenSeaMap), Water Lock mode, HealthKit integration for workout logging, Custom WMS and XYZ map server support

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Surflens

[App page](https://appshunter.io/ios/app/surflens-ai-surf-camera/id6757678275)

This app uses AI to automatically record your surf rides when you place your iPhone on the beach. It processes and edits clips instantly, even offline, allowing you to review and improve your surfing.

**Highlights:** AI-powered automatic wave recording, Apple Watch camera control, Instant offline clip processing, Built-in surf video editor, Optimized camera and battery performance, Session review and progress tracking

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Surflens Plus (Monthly) | $7.99 | per month |
| Surflens Plus (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is Watch Chartplotter free?

Watch Chartplotter costs $9.99, with no in-app purchases.

### Is Surflens free?

Surflens is free to download, with in-app purchases available.

### Which has better reviews, Watch Chartplotter or Surflens?

Watch Chartplotter is rated higher. Watch Chartplotter averages 5.0 out of 5 from 1 ratings, while Surflens averages 4.7 from 24 ratings.

### Do Watch Chartplotter or Surflens have ads?

Surflens shows ads; Watch Chartplotter does not.

### Which is updated more often, Watch Chartplotter or Surflens?

Watch Chartplotter ships an update weekly, and Surflens fortnightly. Most recently, Watch Chartplotter was updated on October 30, 2026 and Surflens on October 31, 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.*