# GRAPPA App vs Bamboo EventHub

The clearest difference is update cadence: GRAPPA App at every 3 months against Bamboo EventHub's every 8 months. GRAPPA App also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GRAPPA App ships an update every 3 months, Bamboo EventHub every 8 months. The most recent releases landed on October 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GRAPPA App | Bamboo EventHub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/grappa-app/id1346646781/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 64 MB | 15 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Group for Research and Assessment of Psoriasis and Psoriatic Arthritis](https://appshunter.io/developer/1346646780) | [Bamboo Medical Communications](https://appshunter.io/developer/1294642203) |

## What reviewers say

### GRAPPA App

[App page](https://appshunter.io/ios/app/grappa-app/id1346646781)

This medical application aids in the assessment of patients with psoriatic arthritis and psoriasis. It provides tools to calculate disease severity scores and includes patient-completed questionnaires in multiple languages. Access to GRAPPA resources is also available.

**Highlights:** Psoriatic arthritis and psoriasis assessment, Disease severity calculators (MDA, PASI, BSA), Patient-completed questionnaires (PsAID, PEST, HAQ), Multilingual questionnaire support, Access to GRAPPA resources

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

**In-app purchases:** none


### Bamboo EventHub

[App page](https://appshunter.io/ios/app/bamboo-eventhub/id6717591725)

Stay informed about your event with session schedules, notifications, and speaker details. Access delegate books, directions, and floor plans. Submit feedback directly to organizers.

**Highlights:** Session schedules, Notifications, Speaker details, Delegate books, Event feedback submission, Directions and floorplan

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

**In-app purchases:** none


## Frequently asked questions

### Is GRAPPA App free?

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

### Is Bamboo EventHub free?

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

### Do GRAPPA App or Bamboo EventHub have ads?

Neither GRAPPA App nor Bamboo EventHub shows ads.

### Which is updated more often, GRAPPA App or Bamboo EventHub?

GRAPPA App ships an update every 3 months, and Bamboo EventHub every 8 months. Most recently, GRAPPA App was updated on October 8, 2026 and Bamboo EventHub on October 30, 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.*