# Tide Clearance — Know margin. Avoid grounding

> Know margin. Avoid grounding (iPhone/iPad app by Shenglan Zhang.)

- Source: https://appshunter.io/ios/app/tide-clearance/id6764288072 (this page in markdown: same URL + `.md`)
- Developer: [Shenglan Zhang](https://appshunter.io/developer/1895717562)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.6 · 10 MB
- Languages: American English
- Released: 2026-05-09
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/tide-clearance/id6764288072/reviews.md

## What is Tide Clearance?

Tide Clearance helps you understand how much water you really have.

Instead of just showing tide height, it shows your margin — the difference between water depth and your draft.

Know when it’s safe to move.
Avoid shallow water risks.
Make better go / no-go decisions.

This is a reference tool. It does not replace official charts or navigation systems.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Access | $79.99 | per year |
| Quarterly Access | $39.99 | per 3 months |



## Version history (last 1 release)

### 1.0 — 2026-05-09

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*