# 케어테일 vs hellocetus

The clearest difference is in-app purchases: 케어테일 at none against hellocetus's 3. 케어테일 also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. hellocetus sells 3 in-app purchases, starting at $1.99 per month. 케어테일 asks for nothing beyond the download.

케어테일 ships an update every 2 weeks, hellocetus monthly. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 케어테일 | hellocetus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 104 MB | 77 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MAX K. Korea Inc. 주식회사 맥스케이코리아](https://appshunter.io/developer/1715676254) | [Waitcle](https://appshunter.io/developer/1824924378) |

## What reviewers say

### 케어테일

[App page](https://appshunter.io/ios/app/id6475027330)

**Features:** macOS Compatibility

**In-app purchases:** none


### hellocetus

[App page](https://appshunter.io/ios/app/hellocetus-supermoon-calendar/id6759944569)

Track celestial events like supermoons, moon phases, and planet positions with this astronomy calendar. Plan observations, get local sun and moon times, and explore detailed sky data.

**Highlights:** Supermoon calendar with long-range dates, Daily moon phase and illumination tracking, Local sun and moon times, Planet position comparison, Save observation notes and reminders, Optional astronomy event alerts

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HelloCetus Premium Monthly | $1.99 | per month |
| HelloCetus Premium Yearly | $4.99 | per year |
| HelloCetus Premium | $6.99 | one-time |


## Frequently asked questions

### Is 케어테일 free?

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

### Is hellocetus free?

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

### Do 케어테일 or hellocetus have ads?

Neither 케어테일 nor hellocetus shows ads.

### Which is updated more often, 케어테일 or hellocetus?

케어테일 ships an update every 2 weeks, and hellocetus monthly. Most recently, 케어테일 was updated on October 8, 2026 and hellocetus on October 29, 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.*