# Stars Blinker vs Decay Lab

The clearest difference is rating: Decay Lab at 5.0 against Stars Blinker's 4.0. Decay Lab also leads on in-app purchases (none vs 1). Stars Blinker's advantage is iOS requirement (12.0 vs 17.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Stars Blinker sells 1 one-off in-app purchase. Decay Lab asks for nothing beyond the download.

Decay Lab holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Stars Blinker | Decay Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/stars-blinker/id1569633657/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decay-lab/id6746874842/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | Free | — |
| Size | 25 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Roberto De Lorenzo](https://appshunter.io/developer/692760870) | [Carlos Uribe](https://appshunter.io/developer/1818871232) |

## What reviewers say

### Stars Blinker

[App page](https://appshunter.io/ios/app/stars-blinker/id1569633657)

This app helps deep-sky photographers compare two images of the same celestial area taken at different times. It highlights changes in object position or brightness by blinking them, making it easier to spot phenomena like variable stars or asteroids.

**Highlights:** Compare two deep-sky images, Highlight changes in object position/brightness, Align images using three stars, Use images from different instruments, Adjust blinking interval, Save animations as movies

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $1.99 | one-time |


### Decay Lab

[App page](https://appshunter.io/ios/app/decay-lab/id6746874842)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stars Blinker free?

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

### Is Decay Lab free?

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

### Which has better reviews, Stars Blinker or Decay Lab?

Decay Lab is rated higher. Stars Blinker averages 4.0 out of 5 from 1 ratings, while Decay Lab averages 5.0 from 1 ratings.

### Do Stars Blinker or Decay Lab have ads?

Neither Stars Blinker nor Decay Lab 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.*