# Alynna vs hellocetus

The clearest difference is in-app purchases: Alynna at none against hellocetus's 3. Alynna also leads on update cadence (every 5 days vs monthly). hellocetus's advantage is ads (none vs shown) and iOS requirement (15.0 vs 18.6). On price 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. Alynna asks for nothing beyond the download.

Alynna ships an update every 5 days, hellocetus monthly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Alynna | hellocetus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/alynna/id6755222294/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 332 MB | 77 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [locaphilia llc](https://appshunter.io/developer/1852686519) | [Waitcle](https://appshunter.io/developer/1824924378) |

## What reviewers say

### Alynna

[App page](https://appshunter.io/ios/app/alynna/id6755222294)

This app offers daily guidance to help you navigate your day with clarity and ease. It provides personalized reflections and mantras to help you pause and reset, offering real-time insights to stay aligned throughout your day.

**Highlights:** Daily focus and reflection, Personalized mantras, Real-time guidance, Emotional and relationship insights, Natural rhythm awareness, Intentional forward movement

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

**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 Alynna free?

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

### Is hellocetus free?

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

### Do Alynna or hellocetus have ads?

Alynna shows ads; hellocetus does not.

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

Alynna ships an update every 5 days, and hellocetus monthly. Most recently, Alynna was updated on November 5, 2026 and hellocetus on November 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.*