# AnchorChainCalculator vs SMARTDOCK

The clearest difference is price: SMARTDOCK at Free against AnchorChainCalculator's $12.99. SMARTDOCK also leads on update cadence (every 9 days vs every 3 weeks). AnchorChainCalculator's advantage is iOS requirement (10.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

SMARTDOCK is free to download; AnchorChainCalculator costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AnchorChainCalculator ships an update every 3 weeks, SMARTDOCK every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | AnchorChainCalculator | SMARTDOCK |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/anchorchaincalculator/id1533741243/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Paid | — |
| Size | 12 MB | 89 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mathias Wagner](https://appshunter.io/developer/1533741245) | [Thitronik](https://appshunter.io/developer/1427302743) |

## What reviewers say

### AnchorChainCalculator

[App page](https://appshunter.io/ios/app/anchorchaincalculator/id1533741243)

Calculate the optimal amount of anchor chain or rope for secure anchoring based on vessel characteristics and sea conditions. Provides detailed load calculations and accounts for dynamic effects like swell and gusts. Supports both metric and imperial units, with options for chain-only or mixed rope/chain setups.

**Highlights:** Physics-based anchoring calculations, Customizable vessel and sea conditions, Chain-only or mixed rope/chain support, Load and swell absorption analysis, Metric and imperial unit support, Multiple vessel configuration storage, Basic and Expert modes

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

**In-app purchases:** none


### SMARTDOCK

[App page](https://appshunter.io/ios/app/smartdock/id6745021801)

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

**In-app purchases:** none


## Frequently asked questions

### Is AnchorChainCalculator free?

AnchorChainCalculator costs $12.99, with no in-app purchases.

### Is SMARTDOCK free?

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

### Do AnchorChainCalculator or SMARTDOCK have ads?

Neither AnchorChainCalculator nor SMARTDOCK shows ads.

### Which is updated more often, AnchorChainCalculator or SMARTDOCK?

AnchorChainCalculator ships an update every 3 weeks, and SMARTDOCK every 9 days. Most recently, AnchorChainCalculator was updated on October 24, 2026 and SMARTDOCK on October 24, 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.*