Echo vs Simul
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Echo
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.
- 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
Read full descriptionHide full description
Live captions, floating over the app you are already watching. Echo listens to whatever is playing — a livestream, a video, the room around you — and floats the translated captions in a small window on top of it. Nothing gets covered. Nothing gets missed. THREE WAYS TO TRANSLATE • Live audio. Sound coming from any other app — Weverse, bubble, YouTube, Instagram, TikTok — translated as it plays. • On-screen text. Comments, chats, posts and menus, translated right where you are reading them. • Around me. Point your iPhone or iPad at a concert, a TV or a conversation and read along live. BUILT FOR THE HARDEST VERSION OF THIS Echo was built for K-pop fans, which is this problem with no margin for error: the live happens once, it is in Korean, and the names have to be right. • 300+ group names, member names and fandom terms, spelled the way fans actually write them. • 40+ languages, with the spoken language detected automatically. • Captions arrive while they are still talking, not after. • iPhone and iPad. On iPad, Home, history, sharing, setup and the plan screen are laid out for the bigger display. KEEP EVERY MOMENT • Every session is saved and named for you, like "Friday night live". Free keeps your latest three; Echo Plus keeps them all, to reread, copy or share. • Turn the best lines into share cards. Five styles: a single quote, both languages together, or the conversation exactly as it was said. • A translation came out wrong? One tap tells us. We read every thumbs-down. QUIET BY DEFAULT • On-screen text can translate on device, where your iPhone or iPad supports it — faster, and it works offline. Live audio always needs a connection. • No sign-up, no account. Open it and go. • Echo is not a screen recorder. It uses only the audio or screen text you choose to translate, and never bypasses DRM or platform protections. FREE EVERY DAY Echo includes a free daily translation allowance. Two optional upgrades remove it. Echo Plus. Translate past the free daily allowance, up to a 5-hour daily fair-use limit set out in the Terms of Use. Your full session history instead of only the latest three, synced across your devices. Eligible new subscribers start with 3 days free on the weekly plan, where available. Day Pass. One night, no subscription. 90 minutes of translation, valid 24 hours. — — — Echo Plus is an auto-renewing subscription available weekly, monthly or yearly. Eligible new subscribers start with a 3-day free trial on the weekly plan, where available. Some new subscribers are offered a discounted first year; it renews at that offer's own yearly price, and both the first-year and renewal prices are shown before purchase. Payment is charged to your Apple ID at confirmation of purchase, and renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in App Store settings. Price and renewal terms are shown before purchase. Day Pass is a one-time purchase granting 90 minutes of translation, valid 24 hours. It is not a subscription and does not auto-renew. Unused time expires, and a used pass cannot be restored. Privacy Policy: https://echokpoptranslate.live/privacy Terms of Use: https://echokpoptranslate.live/terms Echo is not affiliated with, sponsored by, or endorsed by Weverse, Bilibili, or any third-party service mentioned. Third-party names are used only to identify compatible services.
Simul
Read full descriptionHide full description
When you can't follow, just put your phone down. Simul turns what you hear into bilingual captions in real time: the original on top, the translation below, sentence by sentence as they're spoken. ■ Entirely on this device Recognition and translation both run locally. Audio and text are never uploaded and never touch a server. It works in Airplane Mode — go ahead and turn off your network right now and try it. ■ Where it helps · Face to face: one conversation, every turn translated — whoever speaks is detected automatically. If it picks the wrong side, tap that half to switch it. Lay the phone flat between you and one tap splits the screen so their half reads right way up · Lectures and meetings: set it on the table and follow the speaker line by line · Video: play a foreign-language video out loud and read along on screen ■ Built to be read Pure black, large type. The sentence still being spoken is dimmed and underlined; it settles once it's finished — so you always know which line can still change. Show both languages or just the translation. Caption size adjusts on its own, without changing your system text size. ■ Apple Watch Read captions right on your wrist, and start or stop from there. Put the phone down without missing anything. ■ Also · Speak the translation aloud so the other person can hear it · Generate a summary of the conversation when you're done · A Home Screen widget showing your current language pair — one tap to start · Start from Control Center, the Action button, or Siri · Continue on another device with Handoff ■ Language models download first The first time you use it, Simul walks you through downloading the recognition model for your languages. Models are managed by the system and shared across apps, so they don't count toward Simul's size. Downloading needs a network connection — after that, you never need one again.
Screenshots
Verdict
The clearest difference is in-app purchases: Simul at none against Echo's 1. Simul also leads on update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Echo sells 1 in-app purchase, starting at $5.99 per month. Simul asks for nothing beyond the download.
Echo ships an update every 2 days, Simul daily. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.
| Parameter | Echo | Simul |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 23 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Hau-Ben Shih | 钊 邓 |
In-app purchases
Echo
- Echo Unlimited$5.991 Month
Simul
No in-app purchases









