# COSMOLOG vs AstroWalk

The clearest difference is in-app purchases: COSMOLOG at none against AstroWalk's 3. COSMOLOG also leads on ads (none vs shown) and iOS requirement (16.4 vs 18.2). On price, update cadence and device support there is nothing between them.

Both are free to download. AstroWalk sells 3 in-app purchases, starting at $4.99 per month. COSMOLOG asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | COSMOLOG | AstroWalk |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 31 MB |
| Requires iOS | **16.4** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuhei Miyata](https://appshunter.io/developer/1891350359) | [Rin Takemura](https://appshunter.io/developer/1526931035) |

## What reviewers say

### COSMOLOG

[App page](https://appshunter.io/ios/app/cosmolog/id6772499838)

**In-app purchases:** none


### AstroWalk

[App page](https://appshunter.io/ios/app/astrowalk-step-through-space/id6797235820)

This app transforms your daily steps into a journey through the solar system. Walk to virtually travel between planets and moons, collecting them as you go. A premium upgrade unlocks the full solar system and removes ads.

**Highlights:** Step count converted to solar system distance, Virtual travel to planets and moons, Collection of reached celestial bodies, Home screen widget for progress tracking, Health app integration for step data, Premium unlock for full solar system

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AstroWalk Premium Plan | $4.99 | per month |
| AstroWalk Premium Plan | $34.99 | per year |
| Lifetime Plan | $69.99 | one-time |


## Frequently asked questions

### Is COSMOLOG free?

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

### Is AstroWalk free?

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

### Do COSMOLOG or AstroWalk have ads?

AstroWalk shows ads; COSMOLOG does not.

### Which is updated more often, COSMOLOG or AstroWalk?

COSMOLOG ships an update every 3 days, and AstroWalk every 3 days. Most recently, COSMOLOG was updated on November 10, 2026 and AstroWalk on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*