# Stelo vs Echo + Ember

The clearest difference is in-app purchases: Stelo at none against Echo + Ember's 2. Echo + Ember's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Echo + Ember sells 2 in-app purchases, starting at $9.99 per month. Stelo asks for nothing beyond the download.

Stelo ships an update weekly, Echo + Ember every 10 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Stelo | Echo + Ember |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stelo-night-sky-diary/id6763764420/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free | — |
| Size | 1 MB | 50 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JIYULMOM](https://appshunter.io/developer/379186743) | [Ryan Quance](https://appshunter.io/developer/6771831308) |

## What reviewers say

### Stelo

[App page](https://appshunter.io/ios/app/stelo-night-sky-diary/id6763764420)

This ambient stargazing companion offers a private night sky that grows daily. Connect new stars to draw and name your own constellations, creating a personal gallery. Special celestial events and accidental discoveries unlock astronomical insights.

**Highlights:** Daily new stars added to personal sky, Draw and name custom constellations, Gallery of created constellations, Special stars for celestial events, Accidental discovery of IAU constellations, Home screen widgets

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

**In-app purchases:** none


### Echo + Ember

[App page](https://appshunter.io/ios/app/echo-plus-ember/id6775933792)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Monthly | $9.99 | per month |
| Individual Annual | $99.99 | per year |


## Frequently asked questions

### Is Stelo free?

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

### Is Echo + Ember free?

Echo + Ember is free to download, with in-app purchases available.

### Do Stelo or Echo + Ember have ads?

Neither Stelo nor Echo + Ember shows ads.

### Which is updated more often, Stelo or Echo + Ember?

Stelo ships an update weekly, and Echo + Ember every 10 days. Most recently, Stelo was updated on October 31, 2026 and Echo + Ember on October 31, 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.*