Comparison

Surflens vs Kai Surf Coach

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Surflens

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
Read full description

Catch your wave. Surflens catches you. Surflens turns your iPhone on the beach into an AI-powered surf camera — helping you capture, review, and improve your surfing with ease. No filmer. No extra gear. Just your phone and the ocean. Plan your sessions around the surf forecast — and capture every wave when it matters most. Features: AI Surf Camera Place your iPhone on the beach (tripod or stable surface), and Surflens will automatically detect and record surfers riding waves — including you. Your camera acts as a smart wave tracker, capturing every ride in its view. Control from your wrist Use your Apple Watch as a surf watch to control the camera and see exactly where the lens is pointing — so you stay in frame during your surf session. Instant clip processing — even offline Your surf videos are processed instantly — enhanced, cropped, and ready to share. No internet required. Built-in surf video editor turns raw surf footage into clean clips. Optimized for performance Surflens automatically adapts camera settings and battery usage so you can capture more waves without interruption. Review and improve Watch your sessions, review your rides, and track your progress over time. Built for surfers No action camera. No drone. No complicated setup. Just your phone on the beach — and your waves, captured. Surflens is designed to make surf filming simple, accessible, and part of every session. Because every surfer deserves to see their ride. Our Terms of Use: https://surflens.ai/terms

About

Kai Surf Coach

Features
Read full description

KAI is the AI-powered surf coaching app that analyzes your surf sessions and helps you improve faster. Simply record your surf session, upload the video to KAI, and receive detailed AI analysis within minutes. KAI identifies your technique, evaluates your performance, and provides personalized coaching tips based on your skill level. KEY FEATURES: - AI Video Analysis — Upload surf videos and get instant technique feedback - Performance Scoring — Track progress with detailed scores across multiple performance categories - Skill Level Tracking — From Beginner to Advanced, KAI adapts coaching to your level - Session History — Review all past sessions and track your improvement over time - Progress Insights — See your evolution with detailed performance charts and trend analysis - Achievement Badges — Earn badges as you hit new milestones and skill targets HOW IT WORKS: 1. Record your surf session or upload an existing video 2. KAI's AI analyzes your technique, posture, and wave riding 3. Receive a detailed performance score and personalized coaching tips 4. Track your progress over time and see measurable improvement DESIGNED FOR ALL LEVELS: Whether you're just starting out or looking to compete, KAI provides the coaching insights to take your surfing to the next level. SUBSCRIPTIONS: KAI is free to download and includes a free trial analysis. To keep improving, choose an auto-renewable monthly subscription: - Kai Base: 10 AI analyses per month - Kai Premium: unlimited AI analyses and advanced biometrics Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://wavewise-production.up.railway.app/privacy

Screenshots

Surflens4 screens
Kai Surf Coach4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Surflens versus Kai Surf Coach: the parameters behind the verdict, then further details
ParameterSurflensKai Surf Coach
PriceFreeFree
Rating4.7 (24 ratings) — better—
Positive reviews91.7% of reviews—
Number of ratings24 — better—
Update frequencyFortnightly — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS26.115.1 — better
Further details — not scored
Size145 MB45 MB
Age rating+174+
DeveloperWorkstories, Inc.Gianmarco Cimini

In-app purchases

2 purchases

Surflens

Subscriptions2
  • Surflens Plus (Monthly)$7.991 Month
  • Surflens Plus (Yearly)7 Days trial$49.991 Year
None

Kai Surf Coach

No in-app purchases

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.

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