CaptionFlow vs DoubleVoix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CaptionFlow
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Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Unlock real-time bilingual video captions & turn any video into language practice! CaptionFlow is the smartest way to learn languages naturally. Get instant AI-powered translations on video captions and text — perfect for immersion learning without ever leaving your favorite content. Watch & Understand • Load any video and follow along with live bilingual captions • Translate captions into your target language while you watch • Stay focused on meaning instead of constantly pausing Read with Confidence • Paste articles, news, or study material for easy dual-language reading • Great for essays, YouTube videos, podcasts, and daily content Free vs Pro Free: First 60 seconds per video + first 50 sentences per text Pro: Unlimited full videos & full text — no interruptions Made for Real Learning Practice listening + reading every day. Small moments add up to fluency. Perfect for language learners who want AI captions translator, bilingual subtitles for videos, real-time translation, and video subtitle translator all in one beautiful iOS app. Start learning smarter today — download CaptionFlow now! Subscriptions managed in Apple ID settings. Cancel anytime. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DoubleVoix
Transform videos into bilingual programs with consecutive interpretation. The original speaker is heard, followed by an interpreter in your chosen language, maintaining a natural flow. Ideal for sermons, conferences, and reaching multilingual audiences.
- Consecutive interpretation
- Bilingual captions
- Video link or file upload
- Source and target language selection
- Automatic speech segmentation
- Synthesized interpreter voice
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DoubleVoix turns a video into a bilingual, consecutively-interpreted program: the speaker is heard in their own words, then an interpreter voices each passage in your chosen language, before the original picks back up — the rhythm of a live interpreter at a service, conference or summit, not a dub laid on top. HOW IT WORKS 1. Paste a link or upload a video file. 2. Choose the source and target language. 3. Confirm you hold the rights to that video. 4. Get back your interpreted video, bilingual captions burned in, ready to share. No editing skill required. DoubleVoix automatically splits the speech into natural passages, translates each one, synthesizes an interpreter's voice, then reassembles the program: original audio, a freeze-frame on the speaker during interpretation, the source picking back up — on repeat to the end. WHO IT'S FOR Pastors and ministries translating a sermon, conference and summit organizers, creators reaching an audience that speaks more than one language, diaspora families and communities. PRICING A free trial is available with no account needed. Extra minute packs (one-time purchase, no subscription) are available in the app once you've signed up. The result is a machine translation: like any interpreter's work, it deserves a read-through before it's published.
Screenshots
Verdict
The clearest difference is update cadence: DoubleVoix at every 3 days against CaptionFlow's every 10 days. DoubleVoix also leads on iOS requirement (15.0 vs 18). On price, ads, in-app purchases and device support 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. CaptionFlow sells 3 in-app purchases, starting at $0.99 per 7 days and DoubleVoix sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
CaptionFlow ships an update every 10 days, DoubleVoix every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | CaptionFlow | DoubleVoix |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Mehmet Erdem Devge | SALELA BONGO LLC |
In-app purchases
CaptionFlow
- Pro Weekly$0.997 Days
- Pro - Montly$2.991 Month
- Pro Yearly$14.991 Year
DoubleVoix
- 10 dubbing minutes$3.99
- 30 dubbing minutes$11.99
Questions
Is CaptionFlow free?
Is DoubleVoix free?
Do CaptionFlow or DoubleVoix have ads?
Which is updated more often, CaptionFlow or DoubleVoix?
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