# Asteroid Close Approach vs Polly

The clearest difference is price: Polly at Free against Asteroid Close Approach's $1.99. Polly also leads on update cadence (weekly vs every 4 weeks). Asteroid Close Approach's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

Polly is free to download; Asteroid Close Approach costs $1.99 up front. Polly sells 2 one-off in-app purchases. Asteroid Close Approach asks for nothing beyond the download.

Asteroid Close Approach ships an update every 4 weeks, Polly weekly. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Asteroid Close Approach | Polly |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Paid | — |
| Size | 34 MB | 29 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Arpacore B.V.](https://appshunter.io/developer/1441928570) | [Peter Minwegen](https://appshunter.io/developer/1536238559) |

## What reviewers say

### Asteroid Close Approach

[App page](https://appshunter.io/ios/app/asteroid-close-approach/id1562569488)

Get real-time updates on near-Earth asteroid close approaches, including dates, distances, and impact energies. Access NASA's Sentry database for collision predictions and use a built-in calculator to estimate asteroid mass and energy.

**Highlights:** Real-time asteroid data on Apple Watch, Comprehensive approach details, Access to NASA's Sentry database, Asteroid mass and energy calculator, Collision monitoring for the next century

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Polly

[App page](https://appshunter.io/ios/app/polly-language-learning-games/id6758331734)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Polly Pro (Welcome Offer) | $9.99 | one-time |
| Polly Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Asteroid Close Approach free?

Asteroid Close Approach costs $1.99, with no in-app purchases.

### Is Polly free?

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

### Do Asteroid Close Approach or Polly have ads?

Neither Asteroid Close Approach nor Polly shows ads.

### Which is updated more often, Asteroid Close Approach or Polly?

Asteroid Close Approach ships an update every 4 weeks, and Polly weekly. Most recently, Asteroid Close Approach was updated on October 9, 2026 and Polly on October 12, 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.*