# Tie Grading Guide vs SEI Conferences

The clearest difference is ads: SEI Conferences at none against Tie Grading Guide's shown. SEI Conferences also leads on update cadence (every 3 weeks vs every 13 months) and iOS requirement (11.0 vs 13.0). On price, 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.

Tie Grading Guide ships an update every 13 months, SEI Conferences every 3 weeks. The most recent releases landed on September 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Tie Grading Guide | SEI Conferences |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 13 months | **Every 3 weeks** |
| Size | 36 MB | 38 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Western Wood Preservers Institute](https://appshunter.io/developer/656031899) | [American Society of Civil Engineers](https://appshunter.io/developer/494066578) |

## What reviewers say

### Tie Grading Guide

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

**Features:** macOS Compatibility

**In-app purchases:** none


### SEI Conferences

[App page](https://appshunter.io/ios/app/sei-conferences/id1609985578)

**Features:** macOS Compatibility

**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 SEI Conferences free?

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

### Do Tie Grading Guide or SEI Conferences have ads?

Tie Grading Guide shows ads; SEI Conferences does not.

### Which is updated more often, Tie Grading Guide or SEI Conferences?

Tie Grading Guide ships an update every 13 months, and SEI Conferences every 3 weeks. Most recently, Tie Grading Guide was updated on September 25, 2026 and SEI Conferences on October 1, 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.*