# Level3D vs Echo

The clearest difference is update cadence: Echo at every 9 days against Level3D's every 7 months. Echo also leads on ratings volume (32 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Level3D against 5.0 for Echo. That said, the two scores are not equally well evidenced: Echo has 32 ratings behind it against 1, so its average is the more settled of the two.

Level3D ships an update every 7 months, Echo every 9 days. The most recent releases landed on September 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Level3D | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/level3d/id1296669896/reviews) | [5.0 (32 ratings)](https://appshunter.io/ios/app/echo-global-sdr-receiver/id6759174390/reviews) |
| Number of ratings | 1 | **32** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 38 MB | 11 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [J2C Engineering LLC](https://appshunter.io/developer/1200273616) | [Mark Garrison Jr.](https://appshunter.io/developer/1877165041) |

## What reviewers say

### Level3D

[App page](https://appshunter.io/ios/app/level3d/id1296669896)

This utility app offers a suite of leveling tools, including bubble level, roof pitch, and grade measurement. It leverages an orientation device for advanced functions like dual bubble levels and beam distortion.

**Highlights:** Bubble Level, Roof Pitch, Grade Measurement, Cross Grade, Range of Motion Tracking, Dual Bubble Levels, Beam Distortion

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-global-sdr-receiver/id6759174390)

Tune into thousands of remote radio servers worldwide from your iPhone or iPad. Explore shortwave broadcasts, aviation communications, and more with a global interactive map and advanced tuning features. Enjoy uninterrupted background audio and a privacy-first experience.

**Highlights:** Global interactive map and search, Support for multiple SDR architectures, Scanner mode and OpenMHz archives, Pro-level tuning and analytics, Offline frequency library and logging, Uninterrupted background audio, Privacy-first design

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

**In-app purchases:** none


## Frequently asked questions

### Is Level3D free?

Level3D is free to download, with no in-app purchases.

### Is Echo free?

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

### Which has better reviews, Level3D or Echo?

Level3D and Echo are both rated 5.0 out of 5 on the App Store, from 1 and 32 ratings respectively.

### Do Level3D or Echo have ads?

Neither Level3D nor Echo shows ads.

### Which is updated more often, Level3D or Echo?

Level3D ships an update every 7 months, and Echo every 9 days. Most recently, Level3D was updated on September 7, 2026 and Echo on September 25, 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.*