# EchoVision vs SMS

The clearest difference is price: EchoVision at Free against SMS's $1.99. EchoVision also leads on update cadence (every 2 months vs every 20 months). SMS's advantage is chart position (#197 vs unranked) and iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

EchoVision is free to download; SMS costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EchoVision ships an update every 2 months, SMS every 20 months. The most recent releases landed on June 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | EchoVision | SMS |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/echovision/id6499540865/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 20 months |
| Monetization | Free | — |
| Best chart rank | — | **#197** |
| Size | 85 MB | 13 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPad, Vision Pro** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Holo Interactive US, Inc.](https://appshunter.io/developer/1652143524) | [若伦 翁](https://appshunter.io/developer/1029029483) |

## What reviewers say

### EchoVision

[App page](https://appshunter.io/ios/app/echovision/id6499540865)

Experience the world through the eyes of a bat with this mixed reality art installation. Using a bat-shaped mask and your smartphone's LiDAR, visualize echoes and understand echolocation. It offers a unique perspective on non-human sensory perception and promotes ecological appreciation.

**Highlights:** Simulates bat echolocation, Mixed reality art experience, Handheld bat-shaped masks, Smartphone LiDAR integration, Visualizes propagating echoes, Promotes ecocentric design perspective

**Features:** macOS Compatibility

**In-app purchases:** none


### SMS

[App page](https://appshunter.io/ios/app/sms-lite/id6670765933)

**Currently charting:** #197 Top Paid · Entertainment (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is EchoVision free?

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

### Is SMS free?

SMS costs $1.99, with no in-app purchases.

### Do EchoVision or SMS have ads?

Neither EchoVision nor SMS shows ads.

### Which is updated more often, EchoVision or SMS?

EchoVision ships an update every 2 months, and SMS every 20 months. Most recently, EchoVision was updated on June 5, 2026 and SMS on September 10, 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.*