# Echo vs Simul

The clearest difference is in-app purchases: Simul at none against Echo's 11. Simul also leads on update cadence (daily vs every 3 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Echo sells 11 in-app purchases, starting at $3.99 per 7 days. Simul asks for nothing beyond the download.

Echo ships an update every 3 days, Simul daily. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Echo | Simul |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/echo-k-pop-live-translate/id6783508375/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 6 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hau-Ben Shih](https://appshunter.io/developer/1350599516) | [钊 邓](https://appshunter.io/developer/1208415342) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-k-pop-live-translate/id6783508375)

This app provides real-time translations for videos and apps, displaying captions in a floating window. It supports various platforms and offers both live audio and on-screen text translation, with options to save and share translated moments.

**Highlights:** Live translated captions over any video or app, Floating Picture-in-Picture window, Automatic language detection, On-screen text and live audio translation, Save and share translated sessions, On-device translation for speed and offline use

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo Plus — 每周 | $3.99 | per 7 days |
| Echo Plus Weekly · 8 h | $3.99 | per 7 days |
| Echo Unlimited | $5.99 | per month |
| Echo Plus Monthly · 20 h | $12.99 | per month |
| Echo Plus Yearly · 20 h/month | $99.99 | per year |
| Echo Plus — Yearly | $109.99 | per year |
| Echo Plus Yearly · 20 h/month | $149.99 | per year |
| 一日通行证 | $1.99 | one-time |
| +2 hours | $1.99 | one-time |
| +5 hours | $3.99 | one-time |
| +12 hours | $7.99 | one-time |


### Simul

[App page](https://appshunter.io/ios/app/simul-live-captions/id6812948307)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is Simul free?

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

### Do Echo or Simul have ads?

Neither Echo nor Simul shows ads.

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

Echo ships an update every 3 days, and Simul daily. Most recently, Echo was updated on October 25, 2026 and Simul on October 11, 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.*