# GravaStar Sirius vs EchoTether

The clearest difference is rating: EchoTether at 5.0 against GravaStar Sirius's 3.2. EchoTether also leads on update cadence (every 6 days vs every 2 months). GravaStar Sirius's advantage is in-app purchases (none vs 3) and ratings volume (9 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. EchoTether sells 3 in-app purchases, starting at $1.99 per month. GravaStar Sirius asks for nothing beyond the download.

EchoTether holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: GravaStar Sirius has 9 ratings behind it against 1, so its average is the more settled of the two.

GravaStar Sirius ships an update every 2 months, EchoTether every 6 days. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | GravaStar Sirius | EchoTether |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (9 ratings)](https://appshunter.io/ios/app/gravastar-sirius/id6740307538/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echotether/id6749283622/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 15.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 71 MB | 52 MB |
| Requires iOS | **12.0** | 18.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [zhuoye chuangyi Co., ltd](https://appshunter.io/developer/1789460886) | [Bobby Felton Smith](https://appshunter.io/developer/1770784995) |

## What reviewers say

### GravaStar Sirius

[App page](https://appshunter.io/ios/app/gravastar-sirius/id6740307538)

This app allows users to customize audio settings, manage noise cancellation, and connect their earbuds. It also provides firmware updates and real-time battery monitoring for a seamless user experience.

**Highlights:** Customizable equalizer settings, Adaptive noise cancellation, Voice assistant integration, Real-time battery monitoring, Firmware updates

**Features:** macOS Compatibility

**In-app purchases:** none


### EchoTether

[App page](https://appshunter.io/ios/app/echotether/id6749283622)

Record and leave voice messages at real-world locations for others to discover when they are nearby. Share memories, tips, or private notes that become part of the physical map.

**Highlights:** Record and tag audio to your location, Leave audio messages for others to discover, Unlock audio whispers when nearby, Explore community-created audio pins, Set unlock times for recordings, Optional passcode for private messages

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pro upgrade | $1.99 | per month |
| Pro-access | $4.99 | per month |
| EchoTether Pro Monthly | $4.99 | per month |


## Frequently asked questions

### Is GravaStar Sirius free?

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

### Is EchoTether free?

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

### Which has better reviews, GravaStar Sirius or EchoTether?

EchoTether is rated higher. GravaStar Sirius averages 3.2 out of 5 from 9 ratings, while EchoTether averages 5.0 from 1 ratings.

### Do GravaStar Sirius or EchoTether have ads?

Neither GravaStar Sirius nor EchoTether shows ads.

### Which is updated more often, GravaStar Sirius or EchoTether?

GravaStar Sirius ships an update every 2 months, and EchoTether every 6 days. Most recently, GravaStar Sirius was updated on October 12, 2026 and EchoTether on October 5, 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.*