# SurfTideWatch (Tide graph) vs Surf Rack

The clearest difference is update cadence: SurfTideWatch (Tide graph) at every 3 weeks against Surf Rack's every 2 months. SurfTideWatch (Tide graph) also leads on iOS requirement (13.2 vs 15.1). On price, ads, 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, Surf Rack every 2 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SurfTideWatch (Tide graph) | Surf Rack |
| --- | --- | --- |
| 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 | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 27 MB | 63 MB |
| Requires iOS | **13.2** | 15.1 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mitsuhiro Shirai](https://appshunter.io/developer/602643484) | [OCEAN LIBERTA LIMITED LIABILITY CO.](https://appshunter.io/developer/1621934040) |

## 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


### Surf Rack

[App page](https://appshunter.io/ios/app/surf-rack/id1621934038)

**Features:** macOS Compatibility, Apple Wallet

**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 Surf Rack free?

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

### Do SurfTideWatch (Tide graph) or Surf Rack have ads?

Both SurfTideWatch (Tide graph) and Surf Rack show ads.

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

SurfTideWatch (Tide graph) ships an update every 3 weeks, and Surf Rack every 2 months. Most recently, SurfTideWatch (Tide graph) was updated on September 23, 2026 and Surf Rack on September 18, 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.*