# Kpler Events vs MarinersBook

The clearest difference is update cadence: MarinersBook at every 10 days against Kpler Events's every 3 months. MarinersBook also leads on iOS requirement (15.1 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.

Kpler Events ships an update every 3 months, MarinersBook every 10 days. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Kpler Events | MarinersBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 75 MB | 41 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kpler](https://appshunter.io/developer/964438115) | [Oguzcan Kocaman](https://appshunter.io/developer/6795064987) |

## What reviewers say

### Kpler Events

[App page](https://appshunter.io/ios/app/kpler-events/id6476877931)

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

**In-app purchases:** none


### MarinersBook

[App page](https://appshunter.io/ios/app/marinersbook/id6795064984)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kpler Events free?

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

### Is MarinersBook free?

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

### Do Kpler Events or MarinersBook have ads?

Neither Kpler Events nor MarinersBook shows ads.

### Which is updated more often, Kpler Events or MarinersBook?

Kpler Events ships an update every 3 months, and MarinersBook every 10 days. Most recently, Kpler Events was updated on October 5, 2026 and MarinersBook on October 19, 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.*