# Polar Scope Align Pro vs Butterfly Identifier

The clearest difference is review sentiment: Polar Scope Align Pro at 97% against Butterfly Identifier's 0%. Polar Scope Align Pro also leads on rating (4.9 vs 1.0) and ratings volume (310 vs 2). Butterfly Identifier's advantage is price (Free vs $4.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Butterfly Identifier is free to download; Polar Scope Align Pro costs $4.99 up front. Polar Scope Align Pro sells 3 one-off in-app purchases and Butterfly Identifier sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Polar Scope Align Pro holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Polar Scope Align Pro has 310 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 97% of Polar Scope Align Pro's written reviews are positive against 0% of Butterfly Identifier's.

## The numbers

| Metric | Polar Scope Align Pro | Butterfly Identifier |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.9 (310 ratings)](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/butterfly-identifier-moth-id/id1630885839/reviews) |
| Number of ratings | **310** | 2 |
| Positive reviews | **96.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 33 MB | 9 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [Tolkyn Raimbayeva](https://appshunter.io/developer/1692087944) |

## What reviewers say

### Polar Scope Align Pro

[App page](https://appshunter.io/ios/app/polar-scope-align-pro/id970161373)

This app assists astronomers with precise polar alignment for telescopes, offering tools for various reticles and low-latitude accuracy. It also includes a comprehensive suite of astro tools, from object databases to calculators and weather reports.

**Highlights:** Accurate polar alignment calculation, Support for numerous polar scope reticles, Daytime/no polarscope alignment tool, Deep Space Object database, Astrophotography calculators, World astro-weather report

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip 1x | $0.99 | one-time |
| Tip 4x | $3.99 | one-time |
| Tip 10x | $9.99 | one-time |

**What reviewers like**

- 🚀 Best Polar Alignment App
- 👍 Detailed Instructions and Explanations
- 👍 Fantastic App with Many Useful Features
- 👍 Intuitive and No Distractions
- 👍 Comprehensive Astronomy App

**What reviewers complain about**

- 🐛 Compass Inaccurate
- 🐛 Location Data Inaccurate

**Reported bugs**

- Weather Updates Not Working
- Compass Deflected by Mount

**Requested features**

- Add Observation Recording Feature
- Add Push To Option for DSO Objects


### Butterfly Identifier

[App page](https://appshunter.io/ios/app/butterfly-identifier-moth-id/id1630885839)

Instantly identify butterflies and moths from photos with a vast database and high accuracy. Unlock full access to all features with a monthly subscription.

**Highlights:** Instant photo processing, High accuracy identification, Extensive database, Monthly subscription for full access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Butterfly ID Full Access | $9.99 | per month |


## Frequently asked questions

### Is Polar Scope Align Pro free?

Polar Scope Align Pro costs $4.99, and also offers in-app purchases.

### Is Butterfly Identifier free?

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

### Which has better reviews, Polar Scope Align Pro or Butterfly Identifier?

Polar Scope Align Pro is rated higher. Polar Scope Align Pro averages 4.9 out of 5 from 310 ratings, while Butterfly Identifier averages 1.0 from 2 ratings.

### Do Polar Scope Align Pro or Butterfly Identifier have ads?

Neither Polar Scope Align Pro nor Butterfly Identifier shows ads.

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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.*