# Smithsonian vs Constellation Finder

The clearest difference is device support: Smithsonian at 3 against Constellation Finder's 1. Smithsonian also leads on iOS requirement (13.0 vs 16.4). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Smithsonian sells 2 one-off in-app purchases and Constellation Finder sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Smithsonian ships an update every 3 months, Constellation Finder every 2 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Smithsonian | Constellation Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (9 ratings)](https://appshunter.io/ios/app/constellation-finder-planets/id6744271218/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 285 MB | 20 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [PlayDate Digital](https://appshunter.io/developer/652113715) | [Overflow LTD](https://appshunter.io/developer/1664238457) |

## What reviewers say

### Smithsonian

[App page](https://appshunter.io/ios/app/smithsonian-planets/id6504839302)

Explore the solar system with interactive games and animations. Learn fascinating facts about planets, moons, and the asteroid belt. Designed for curious young minds to introduce astronomy basics.

**Highlights:** Fascinating facts about the solar system, Mini games like Space Winter Rush, Interactive activities, Educational animations, Read to Me text, Collect planet badges

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Buy 5 Planets | $2.99 | one-time |


### Constellation Finder

[App page](https://appshunter.io/ios/app/constellation-finder-planets/id6744271218)

Discover planets and constellations with an interactive and educational journey through space. Explore celestial bodies, learn fascinating facts, and enjoy a playful design that makes learning about the solar system fun for all ages.

**Highlights:** Instant planet search and navigation, Fascinating facts and real data, Interactive solar system exploration, Regularly updated celestial data, Vibrant and playful design, Constellation finding capabilities

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $5.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime | $17.99 | one-time |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Smithsonian free?

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

### Is Constellation Finder free?

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

### Do Smithsonian or Constellation Finder have ads?

Neither Smithsonian nor Constellation Finder shows ads.

### Which is updated more often, Smithsonian or Constellation Finder?

Smithsonian ships an update every 3 months, and Constellation Finder every 2 months. Most recently, Smithsonian was updated on September 22, 2026 and Constellation Finder on September 9, 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.*