# Astro Locator vs E Ink CP Tools

The clearest difference is price: E Ink CP Tools at Free against Astro Locator's $3.99. E Ink CP Tools also leads on iOS requirement (12.0 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

E Ink CP Tools is free to download; Astro Locator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Astro Locator ships an update every 3 months, E Ink CP Tools every 5 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Astro Locator | E Ink CP Tools |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (68 ratings)](https://appshunter.io/ios/app/astro-locator/id927483920/reviews)** | — |
| Number of ratings | **68** | — |
| Positive reviews | 77.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | — |
| Size | 6 MB | 9 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Progress Concepts Limited](https://appshunter.io/developer/788761727) | [E Ink Holdings Inc.](https://appshunter.io/developer/791464815) |

## What reviewers say

### Astro Locator

[App page](https://appshunter.io/ios/app/astro-locator/id927483920)

This app assists astronomers in quickly and easily achieving polar alignment for their telescopes. It helps locate key stars like Polaris or Sigma Octantis, displaying essential astronomical data for setup and viewing. Ideal for mobile astronomers who frequently set up and pack down their equipment.

**Highlights:** Quick polar alignment, Locate Polaris/Sigma Octantis, Display elevation, latitude, longitude, Show moon phase, Sunrise/sunset times, Astro twilight times, Today Extension widget

**In-app purchases:** none


### E Ink CP Tools

[App page](https://appshunter.io/ios/app/e-ink-cp-tools/id1526631895)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astro Locator free?

Astro Locator costs $3.99, with no in-app purchases.

### Is E Ink CP Tools free?

E Ink CP Tools is free to download, with no in-app purchases.

### Do Astro Locator or E Ink CP Tools have ads?

Neither Astro Locator nor E Ink CP Tools shows ads.

### Which is updated more often, Astro Locator or E Ink CP Tools?

Astro Locator ships an update every 3 months, and E Ink CP Tools every 5 months. Most recently, Astro Locator was updated on October 20, 2026 and E Ink CP Tools on October 6, 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.*