# Stamper vs 全国潮汐表

The clearest difference is price: 全国潮汐表 at Free against Stamper's $1.99. 全国潮汐表 also leads on iOS requirement (12.0 vs 14.0). Stamper's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 4 months). On in-app purchases and device support there is nothing between them.

全国潮汐表 is free to download; Stamper costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stamper ships an update every 3 weeks, 全国潮汐表 every 4 months. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Stamper | 全国潮汐表 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 4 MB | 78 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yipeng Huang](https://appshunter.io/developer/1472467824) | [hao weiming](https://appshunter.io/developer/1444539190) |

## What reviewers say

### Stamper

[App page](https://appshunter.io/ios/app/stamper/id1472467825)

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

**In-app purchases:** none


### 全国潮汐表

[App page](https://appshunter.io/ios/app/id6502544888)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stamper free?

Stamper costs $1.99, with no in-app purchases.

### Is 全国潮汐表 free?

全国潮汐表 is free to download, with no in-app purchases.

### Do Stamper or 全国潮汐表 have ads?

全国潮汐表 shows ads; Stamper does not.

### Which is updated more often, Stamper or 全国潮汐表?

Stamper ships an update every 3 weeks, and 全国潮汐表 every 4 months. Most recently, Stamper was updated on November 11, 2026 and 全国潮汐表 on November 4, 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.*