# ETCIOSEA vs Casterly

The clearest difference is in-app purchases: ETCIOSEA at none against Casterly's 1. Casterly's advantage is update cadence (every 2 weeks vs every 4 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Casterly sells 1 in-app purchase, starting at $9.99 per year. ETCIOSEA asks for nothing beyond the download.

ETCIOSEA ships an update every 4 months, Casterly every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | ETCIOSEA | Casterly |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 84 MB | 15 MB |
| Requires iOS | **16.1** | 17.6 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Times Internet Limited](https://appshunter.io/developer/427164656) | [Sodium Studio, LLC](https://appshunter.io/developer/1887896668) |

## What reviewers say

### ETCIOSEA

[App page](https://appshunter.io/ios/app/etciosea/id6657975467)

**Features:** macOS Compatibility

**In-app purchases:** none


### Casterly

[App page](https://appshunter.io/ios/app/casterly/id6761127451)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Casterly Pro | $9.99 | per year |


## Frequently asked questions

### Is ETCIOSEA free?

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

### Is Casterly free?

Casterly is free to download, with in-app purchases available.

### Do ETCIOSEA or Casterly have ads?

Neither ETCIOSEA nor Casterly shows ads.

### Which is updated more often, ETCIOSEA or Casterly?

ETCIOSEA ships an update every 4 months, and Casterly every 2 weeks. Most recently, ETCIOSEA was updated on October 25, 2026 and Casterly on October 25, 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.*