# PORTSIDE FOS vs Eventzilla

The clearest difference is rating: Eventzilla at 1.6 against PORTSIDE FOS's 1.2. Eventzilla also leads on update cadence (monthly vs every 4 months) and review sentiment (13% vs 3%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Eventzilla holds the better App Store score, 1.6 against 1.2. Both are backed by a comparable volume of ratings — 49 and 27 respectively. Written reviews point the same way: 3% of PORTSIDE FOS's written reviews are positive against 13% of Eventzilla's.

PORTSIDE FOS ships an update every 4 months, Eventzilla monthly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | PORTSIDE FOS | Eventzilla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (49 ratings)](https://appshunter.io/ios/app/portside-fos/id1049458379/reviews) | **[1.6 (27 ratings)](https://appshunter.io/ios/app/eventzilla/id1437123810/reviews)** |
| Number of ratings | **49** | 27 |
| Positive reviews | 2.9% of reviews | **12.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | Free |
| Size | 269 MB | 40 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Portside, Inc.](https://appshunter.io/developer/1609132004) | [Eventzilla Corporation](https://appshunter.io/developer/1437123809) |

## What reviewers say

### PORTSIDE FOS

[App page](https://appshunter.io/ios/app/portside-fos/id1049458379)

This app provides aviation professionals with essential flight planning and scheduling tools on their mobile devices. Access aircraft schedules, crew duty times, flight logs, and trip details, with offline capabilities for use in flight. It integrates with desktop companion applications and international trip support services.

**Highlights:** Aircraft Schedules, Trip and Leg Details, Crew Duty Times, Flight Log Entry, Expense Submission, Offline Airport Directory, Weather and NOTAMs

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

**In-app purchases:** none


### Eventzilla

[App page](https://appshunter.io/ios/app/eventzilla/id1437123810)

Access event details, participate in activities, and plan your schedule. Connect with private event communities and explore venue maps. Organizers can create engaging mobile experiences.

**Highlights:** Join private event communities, Access event information, Personalized schedules and reminders, Venue and local area maps, See upcoming event activities

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

**In-app purchases:** none


## Frequently asked questions

### Is PORTSIDE FOS free?

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

### Is Eventzilla free?

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

### Which has better reviews, PORTSIDE FOS or Eventzilla?

Eventzilla is rated higher. PORTSIDE FOS averages 1.2 out of 5 from 49 ratings, while Eventzilla averages 1.6 from 27 ratings.

### Do PORTSIDE FOS or Eventzilla have ads?

Neither PORTSIDE FOS nor Eventzilla shows ads.

### Which is updated more often, PORTSIDE FOS or Eventzilla?

PORTSIDE FOS ships an update every 4 months, and Eventzilla monthly. Most recently, PORTSIDE FOS was updated on November 6, 2026 and Eventzilla on November 2, 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.*