# Tie Grading Guide vs Mers & Oceans

The clearest difference is price: Tie Grading Guide at Free against Mers & Oceans's $0.99. Tie Grading Guide also leads on iOS requirement (13.0 vs 15.0). Mers & Oceans's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Tie Grading Guide is free to download; Mers & Oceans costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Tie Grading Guide | Mers & Oceans |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 13 months | — |
| Size | 36 MB | 7 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Western Wood Preservers Institute](https://appshunter.io/developer/656031899) | [Michel Garlandat](https://appshunter.io/developer/1092759498) |

## What reviewers say

### Tie Grading Guide

[App page](https://appshunter.io/ios/app/tie-grading-guide/id1152624753)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mers & Oceans

[App page](https://appshunter.io/ios/app/mers-and-oceans/id6762598304)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tie Grading Guide free?

Tie Grading Guide is free to download, with no in-app purchases.

### Is Mers & Oceans free?

Mers & Oceans costs $0.99, with no in-app purchases.

### Do Tie Grading Guide or Mers & Oceans have ads?

Tie Grading Guide shows ads; Mers & Oceans does not.

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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.*