# Surflens vs Kai Surf Coach

The clearest difference is in-app purchases: Kai Surf Coach at none against Surflens's 2. Kai Surf Coach also leads on ads (none vs shown) and iOS requirement (15.1 vs 26.1). Surflens's advantage is update cadence (fortnightly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Surflens sells 2 in-app purchases, starting at $7.99 per month. Kai Surf Coach asks for nothing beyond the download.

Surflens ships an update fortnightly, Kai Surf Coach every 3 months. The most recent releases landed on October 31, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Surflens | Kai Surf Coach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (24 ratings)](https://appshunter.io/ios/app/surflens-ai-surf-camera/id6757678275/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Ad-supported | — |
| Size | 145 MB | 45 MB |
| Requires iOS | 26.1 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | +17 | 4+ |
| Developer | [Workstories, Inc.](https://appshunter.io/developer/1580937218) | [Gianmarco Cimini](https://appshunter.io/developer/6780413672) |

## What reviewers say

### 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 |


### Kai Surf Coach

[App page](https://appshunter.io/ios/app/kai-surf-coach/id6780413670)

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

**In-app purchases:** none


## Frequently asked questions

### Is Surflens free?

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

### Is Kai Surf Coach free?

Kai Surf Coach is free to download, with no in-app purchases.

### Do Surflens or Kai Surf Coach have ads?

Surflens shows ads; Kai Surf Coach does not.

### Which is updated more often, Surflens or Kai Surf Coach?

Surflens ships an update fortnightly, and Kai Surf Coach every 3 months. Most recently, Surflens was updated on October 31, 2026 and Kai Surf Coach on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*