Comparison

Speech King vs SpeakFlow AI Shadowing

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Speech King

Alter your voice to sound like anyone you desire. This app uses acoustic sound memory to help you train vocalization and pronunciation by repeating sounds and comparing your speech to the original.

Highlights
  • Change your voice
  • Practice pronunciation
  • Acoustic sound memory training
  • Compare original and your speech
  • Targeted phonetic sound groups
Features
Read full description

Practice American pronunciation by hearing the reference, saying it yourself, and hearing your own voice immediately. Keep the reference fresh in your ear while you listen to your own voice. Three simple controls • Play sound: listen to the American reference. • Hold to record: speak while holding, then release to hear yourself immediately. • Play both: hear the reference followed by your own recording. Targeted phonetic sets Explore 70 targeted phonetic sets, designed and brought together by a professor with 30 years of experience. Practice individual sounds, words and phrases with American Male or American Female reference recordings. See what you hear Compare labeled sound patterns, pauses, recording length, and the rise and fall of each voice on the main screen. These are listening guides, not an accent grade or a pronunciation score. Build a practice habit Return to saved recordings and listen for changes over time. Earn private pools and levels through completed practice rounds. Levels measure participation, not speech quality; there is no shared leaderboard. Private, offline practice No account is required. Voice recordings and practice history stay on your device. Review or delete your recordings in Settings.

About

SpeakFlow AI Shadowing

Features
Read full description

SpeakFlow - Master Fluent English Speaking with AI "Tired of listening to countless hours of English but still can't speak fluently?" "Feeling unconfident, unsure if your pronunciation is correct?" For every English learner facing these challenges, a new solution is here. SpeakFlow is a next-generation training app specializing in shadowing, powered by state-of-the-art AI voice recognition technology. What is Shadowing? Shadowing is a powerful language training method where you listen to English audio and repeat it like a shadow, just a moment behind the speaker. It's a highly effective way to improve both your listening and speaking skills simultaneously—a technique practiced even by professional interpreters. A New Learning Experience with SpeakFlow Traditional shadowing has one major drawback: you never know if your pronunciation is accurate. SpeakFlow solves this problem with AI technology. Key Features 1. Real-Time Pronunciation Scoring by AI As you shadow, our AI transcribes your voice in real time. It then compares your speech to the native speaker's audio and evaluates your pronunciation with an objective score. Instantly see which words you've mastered and where you need to improve. Say goodbye to guesswork and practice with precision. 2. Master Difficult Phrases with AB Loop Repetition Struggling with a specific phrase? The AB Loop feature is here to help. Repeatedly play and practice only the parts you find difficult, allowing you to focus your efforts and master them effectively. 3. Diverse Learning Content via Import Import and practice with a wide range of audio content tailored to your goals—from practical business phrases and daily conversations to news and materials for TOEIC® & TOEFL® test preparation. Keep your learning journey fresh and engaging. 4. Visualize Your Progress Track your daily training results and score trends with easy-to-read graphs. Seeing your improvement visually will keep you highly motivated. Recommended for: - Those who want to improve their speaking skills, especially fluency and pronunciation. - Students aiming for high scores on standardized tests like TOEIC® or TOEFL®. - Individuals preparing for studying abroad, overseas assignments, or international business trips. - Professionals who want to acquire persuasive English for business situations. - Learners who haven't seen results from listening-only practice. - Anyone feeling they've hit a wall in their self-study journey. Term of Service https://spec2.github.io/docs/terms-of-service.html Privacy Policy https://spec2.github.io/docs/privacy-policy.html

Screenshots

Speech King4 screens
SpeakFlow AI Shadowing4 screens

Verdict

The call

The clearest difference is in-app purchases: Speech King at none against SpeakFlow AI Shadowing's 2. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SpeakFlow AI Shadowing sells 2 in-app purchases, starting at $2.99 per month. Speech King asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

Scorecard1 real difference · 9 level
Speech King versus SpeakFlow AI Shadowing: the parameters behind the verdict, then further details
ParameterSpeech KingSpeakFlow AI Shadowing
PriceFreeFree
Rating4.4 (5 ratings) — better—
Positive reviews90.9% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.017.0
Further details — not scored
Size21 MB14 MB
Age rating12+4+
DeveloperBig O, LLC.Shota Iwamatsu

In-app purchases

None

Speech King

No in-app purchases

2 purchases

SpeakFlow AI Shadowing

Subscriptions2
  • Premium Plan (Monthly)$2.991 Month
  • Premium Plan (Annual)$29.991 Year

Questions

Is Speech King free?
Speech King is free to download, with no in-app purchases.
Is SpeakFlow AI Shadowing free?
SpeakFlow AI Shadowing is free to download, with in-app purchases available.
Do Speech King or SpeakFlow AI Shadowing have ads?
Neither Speech King nor SpeakFlow AI Shadowing shows ads.
Which is updated more often, Speech King or SpeakFlow AI Shadowing?
Speech King ships an update every 2 weeks, and SpeakFlow AI Shadowing every 2 weeks. Most recently, Speech King was updated on September 20, 2026 and SpeakFlow AI Shadowing on September 10, 2026.

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