# SIM vs Echo

The clearest difference is in-app purchases: SIM at none against Echo's 4. SIM also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). Echo's advantage is update cadence (every 8 days vs monthly). On price and ads there is nothing between them.

Both are free to download. Echo sells 4 in-app purchases, starting at $8.99 per month. SIM asks for nothing beyond the download.

SIM ships an update monthly, Echo every 8 days. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SIM | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (81 ratings)](https://appshunter.io/ios/app/echo-in-ear-voice-translator/id6742157123/reviews)** |
| Number of ratings | — | **81** |
| Positive reviews | — | 23.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 7 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vegait Tecnologia da Informacao Ltda EPP](https://appshunter.io/developer/1418711581) | [Dainware LLC](https://appshunter.io/developer/1797108936) |

## What reviewers say

### SIM

[App page](https://appshunter.io/ios/app/sim/id6445855775)

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

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-in-ear-voice-translator/id6742157123)

This AI-powered app translates speech in real-time directly to your Bluetooth headphones. It intelligently detects speech without manual prompts, offering on-device processing for privacy and offline use. Choose between accuracy and speed translation models.

**Highlights:** Real-time in-ear voice translation, Works with AirPods and other Bluetooth headphones, Automatic speech detection, On-device processing (offline use), Supports 14 languages and 19 accents, Accuracy vs. Speed translation models

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $8.99 | per month |
| Yearly Subscription | $39.99 | per year |
| Yearly Subscription | $64.99 | per year |
| Unlimited Subscription | $99.99 | one-time |


## Frequently asked questions

### Is SIM free?

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

### Is Echo free?

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

### Do SIM or Echo have ads?

Neither SIM nor Echo shows ads.

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

SIM ships an update monthly, and Echo every 8 days. Most recently, SIM was updated on October 1, 2026 and Echo on October 13, 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.*