# Catbus Parent vs OLM Marker

The clearest difference is update cadence: OLM Marker at every 3 weeks against Catbus Parent's every 22 months. 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.

Catbus Parent ships an update every 22 months, OLM Marker every 3 weeks. The most recent releases landed on May 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Catbus Parent | OLM Marker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Size | 27 MB | 8 MB |
| Requires iOS | **13.0** | 13.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [COHOTA JOINT STOCK COMPANY](https://appshunter.io/developer/1481425830) | [Tho Ha Duc](https://appshunter.io/developer/1636633233) |

## What reviewers say

### Catbus Parent

[App page](https://appshunter.io/ios/app/catbus-parent/id1482370924)

**Features:** macOS Compatibility

**In-app purchases:** none


### OLM Marker

[App page](https://appshunter.io/ios/app/olm-marker/id1636633231)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Catbus Parent free?

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

### Is OLM Marker free?

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

### Do Catbus Parent or OLM Marker have ads?

Neither Catbus Parent nor OLM Marker shows ads.

### Which is updated more often, Catbus Parent or OLM Marker?

Catbus Parent ships an update every 22 months, and OLM Marker every 3 weeks. Most recently, Catbus Parent was updated on May 16, 2026 and OLM Marker on September 20, 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.*