# Cordulus Core vs Marlin

Cordulus Core and Marlin 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.

Cordulus Core ships an update every 2 months, Marlin every 5 weeks. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Cordulus Core | Marlin |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 105 MB | 37 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cordulus A/S](https://appshunter.io/developer/1168200642) | [Tarek Almohamad](https://appshunter.io/developer/1854363231) |

## What reviewers say

### Cordulus Core

[App page](https://appshunter.io/ios/app/cordulus-core/id6753295314)

Get precise, hyperlocal weather data for informed decision-making. Access real-time, historical, and forecast insights to optimize operations and reduce risks.

**Highlights:** Precise hyperlocal weather data, Real-time insights, Historical weather data, Forecast data, Risk reduction tools, Operational optimization

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

**In-app purchases:** none


### Marlin

[App page](https://appshunter.io/ios/app/marlin/id6755519257)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cordulus Core free?

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

### Is Marlin free?

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

### Do Cordulus Core or Marlin have ads?

Neither Cordulus Core nor Marlin shows ads.

### Which is updated more often, Cordulus Core or Marlin?

Cordulus Core ships an update every 2 months, and Marlin every 5 weeks. Most recently, Cordulus Core was updated on October 7, 2026 and Marlin on October 5, 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.*