# Guidebook vs IAMI Marine

Guidebook and IAMI Marine are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Guidebook ships an update every 2 weeks, IAMI Marine fortnightly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Guidebook | IAMI Marine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.7K ratings)](https://appshunter.io/ios/app/guidebook/id428713847/reviews)** | — |
| Number of ratings | **3.7K** | — |
| Positive reviews | 52.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | — |
| Size | 57 MB | 154 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Guidebook Inc](https://appshunter.io/developer/428713850) | [EventBank](https://appshunter.io/developer/740353440) |

## What reviewers say

### Guidebook

[App page](https://appshunter.io/ios/app/guidebook/id428713847)

This application serves as a comprehensive guide for events, conferences, and campuses. Users can build personalized schedules, access detailed information about speakers and sponsors, and navigate venues with interactive maps. It also facilitates attendee engagement through messaging and a social feed.

**Highlights:** Personalized schedule and to-do lists, Speaker and sponsor information, Venue and local area maps, In-app search functionality, Attendee messaging and engagement, Interactive social feed

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Stable and easy to navigate
- 📚 Helpful for planning schedules and events
- 🗺️ Provides maps and venue information

**What reviewers complain about**

- 🔆 Lack of dark mode option
- 🐛 Frequent crashes and freezes
- 🔍 Confusing search functionality
- 🔋 High battery consumption
- 🗓️ Difficulty managing old event data

**Reported bugs**

- Crashes when trying to view event details
- Inability to add custom events to schedule
- Incorrect location pinpointing on maps
- Notification issues and unwanted alerts

**Requested features**

- Dark mode option
- Ability to sync schedule across devices
- More customization options for user profile
- Better event filtering and search capabilities
- Integration with calendar apps


### IAMI Marine

[App page](https://appshunter.io/ios/app/iami-marine/id6737942240)

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

**In-app purchases:** none


## Frequently asked questions

### Is Guidebook free?

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

### Is IAMI Marine free?

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

### Do Guidebook or IAMI Marine have ads?

Neither Guidebook nor IAMI Marine shows ads.

### Which is updated more often, Guidebook or IAMI Marine?

Guidebook ships an update every 2 weeks, and IAMI Marine fortnightly. Most recently, Guidebook was updated on November 6, 2026 and IAMI Marine on October 31, 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.*