# T21 Events vs ChapterPRO

The clearest difference is update cadence: ChapterPRO at weekly against T21 Events's every 2 months. ChapterPRO also leads on iOS requirement (15.0 vs 17.0). On price, ads, 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.

T21 Events ships an update every 2 months, ChapterPRO weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | T21 Events | ChapterPRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chapterpro/id6763407887/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free |
| Size | 77 MB | 33 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Tiger 21 LLC](https://appshunter.io/developer/1463822290) | [The Code Crew LLC](https://appshunter.io/developer/1895300869) |

## What reviewers say

### T21 Events

[App page](https://appshunter.io/ios/app/t21-events/id1661753357)

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

**In-app purchases:** none


### ChapterPRO

[App page](https://appshunter.io/ios/app/chapterpro/id6763407887)

This app centralizes essential chapter information, allowing users to view and RSVP to events, connect with members, and access resources. Keep your personal details updated and stay informed about chapter news and updates.

**Highlights:** View and RSVP to events, Connect with members, Access chapter resources, Manage personal information, Browse member directory, Participate in forums and groups

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

**In-app purchases:** none


## Frequently asked questions

### Is T21 Events free?

T21 Events is free to download, with no in-app purchases.

### Is ChapterPRO free?

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

### Do T21 Events or ChapterPRO have ads?

Neither T21 Events nor ChapterPRO shows ads.

### Which is updated more often, T21 Events or ChapterPRO?

T21 Events ships an update every 2 months, and ChapterPRO weekly. Most recently, T21 Events was updated on November 3, 2026 and ChapterPRO on November 5, 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.*