# SurfTideWatch (Tide graph) vs KookinSurf

The clearest difference is ads: KookinSurf at none against SurfTideWatch (Tide graph)'s shown. SurfTideWatch (Tide graph)'s advantage is iOS requirement (13.2 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

SurfTideWatch (Tide graph) ships an update every 3 weeks, KookinSurf every 10 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SurfTideWatch (Tide graph) | KookinSurf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (8 ratings)](https://appshunter.io/ios/app/surftidewatch-tide-graph/id1507871573/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 24.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 27 MB | 149 MB |
| Requires iOS | **13.2** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Mitsuhiro Shirai](https://appshunter.io/developer/602643484) | [Dmytro Shcherbyna](https://appshunter.io/developer/6809955388) |

## What reviewers say

### SurfTideWatch (Tide graph)

[App page](https://appshunter.io/ios/app/surftidewatch-tide-graph/id1507871573)

Visualize tide graphs and astronomical events for marine sports. Select from thousands of global tide points and synchronize data to your Apple Watch. Customize place names and utilize complications for quick access to tide information.

**Highlights:** Tide graph visualization, Global tide point selection (10,000+), Synchronization with Apple Watch, Customizable place names, Astronomical event display (sunrise, sunset), Apple Watch complications support

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

**In-app purchases:** none


### KookinSurf

[App page](https://appshunter.io/ios/app/kookinsurf/id6809954966)

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

**In-app purchases:** none


## Frequently asked questions

### Is SurfTideWatch (Tide graph) free?

SurfTideWatch (Tide graph) is free to download, with no in-app purchases.

### Is KookinSurf free?

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

### Do SurfTideWatch (Tide graph) or KookinSurf have ads?

SurfTideWatch (Tide graph) shows ads; KookinSurf does not.

### Which is updated more often, SurfTideWatch (Tide graph) or KookinSurf?

SurfTideWatch (Tide graph) ships an update every 3 weeks, and KookinSurf every 10 days. Most recently, SurfTideWatch (Tide graph) was updated on November 3, 2026 and KookinSurf 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.*