# INDIGO A1 vs SynLink

The clearest difference is rating: SynLink at 4.3 against INDIGO A1's 3.4. SynLink also leads on in-app purchases (none vs 9) and iOS requirement (15.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. INDIGO A1 sells 9 one-off in-app purchases. SynLink asks for nothing beyond the download.

SynLink holds the better App Store score, 4.3 against 3.4. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

INDIGO A1 ships an update every 2 weeks, SynLink fortnightly. Both last shipped on October 30, 2026.

## The numbers

| Metric | INDIGO A1 | SynLink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/indigo-a1/id1617125771/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/synlink/id6739761466/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | Free |
| Size | 30 MB | 221 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CloudMakers, s. r. o.](https://appshunter.io/developer/789740577) | [Suzhou UMa Technology Co., Ltd](https://appshunter.io/developer/1786910791) |

## What reviewers say

### INDIGO A1

[App page](https://appshunter.io/ios/app/indigo-a1/id1617125771)

This versatile graphical interface allows for multiplatform control of INDIGO servers, enhancing astronomical software management. It offers comprehensive features for image capture, guiding, mount operation, and plate solving, with advanced scripting and real-time monitoring.

**Highlights:** Multiplatform INDIGO server control, Image capture and stacking, Advanced guiding functionalities, Telescope mount and accessory control, Plate solving for precise targeting, Scripting and automation, Macro photography mode

**Features:** Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dashboard features upgrade | Free | one-time |
| All features 14-day trial | Free | one-time |
| Imager features upgrade | Free | one-time |
| Guider features upgrade | Free | one-time |
| Mount control features upgrade | Free | one-time |
| Dashboard features | $19.99 | one-time |
| Guiding features | $24.99 | one-time |
| Imaging features | $24.99 | one-time |
| Mount control features | $24.99 | one-time |


### SynLink

[App page](https://appshunter.io/ios/app/synlink/id6739761466)

This professional controller facilitates astrophotography by offering broad compatibility with major camera brands and astronomical equipment. Its design emphasizes simplicity, restraint, and modernity for an intuitive user experience.

**Highlights:** Broad camera compatibility (Fujifilm, Canon, Nikon, Sony), Supports astronomical cameras, Controls equatorial mounts, Manages filter wheels and focusers, Modern and simple interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is INDIGO A1 free?

INDIGO A1 is free to download, with in-app purchases available.

### Is SynLink free?

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

### Which has better reviews, INDIGO A1 or SynLink?

SynLink is rated higher. INDIGO A1 averages 3.4 out of 5 from 5 ratings, while SynLink averages 4.3 from 3 ratings.

### Do INDIGO A1 or SynLink have ads?

Neither INDIGO A1 nor SynLink shows ads.

### Which is updated more often, INDIGO A1 or SynLink?

INDIGO A1 ships an update every 2 weeks, and SynLink fortnightly. Most recently, INDIGO A1 was updated on October 30, 2026 and SynLink on October 30, 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.*