Comparison

SentenceDeck vs Fluency Loop

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

Head to head
About

SentenceDeck

Features
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Shadowing, made simple. Paste any text β€” a news story, a podcast transcript, a page from your textbook β€” and SentenceDeck turns it into a sentence-by-sentence speaking drill: hear it, say it, hear yourself back. No scripted lessons, no grades. Just the method interpreters and polyglots swear by, applied to the exact text you want to master. HOW A SESSION WORKS For every sentence, SentenceDeck: 1. Plays a clear reference voice 2. Records you automatically β€” recording stops when you stop speaking 3. Plays your voice back so you can hear the difference Switch on A/B compare to hear reference and recording back to back, lock a tricky sentence to loop it, and change playback speed (0.75Γ— to 1.5Γ—) without regenerating audio. WHAT'S NEW IN 1.5 β€’ A redesigned home screen: pick up where you left off, and see today's sentences, your streak and your lifetime total at a glance β€’ A richer premium voice with selectable voice styles β€’ Free Sample articles so you can try the flow before adding your own text β€’ Backup & Export: premium audio is included in your device backup when backups are enabled and sufficient backup space is available. Only a SentenceDeck ZIP can import compatible articles and audio on a new device; practice progress is not restored. Exported merged audio is for listening only and cannot be imported β€’ Clearer pricing: each sentence is generated as you practice. The same sentence is charged once and cached for replay with the same premium voice and style settings; changing the premium voice or style may generate it again and use characters again TWO VOICES β€” ONE IS FREE System voice: built into iOS. Free, offline, unlimited. Premium voice: natural, expressive male and female voices with several speaking styles. Pay only for the sentences you practice; nothing expires. 9 VOICE LANGUAGES English, Chinese (Simplified and Traditional), Japanese, Korean, Spanish, French, Italian, German. The language of your text is detected automatically, or set it yourself. MADE FOR REAL STUDY β€’ Works with any text: articles, dialogues, exam material, notes for a presentation β€’ Each sentence is cached for the selected premium voice and style β€” generate it once, practice as often as you like β€’ Light, dark and system themes; 10 interface languages β€’ iPhone and iPad PREMIUM VOICE PRICING β€’ 6,000 characters (about 100 sentences) β€’ 30,000 characters (about 500 sentences) β€’ 72,000 characters (about 1,200 sentences) Characters never expire. The App Store shows the local price for your region. Whether you are preparing for IELTS, TOEFL, JLPT or TOPIK, polishing a presentation, or just want to sound more natural, SentenceDeck gives you a focused, repeatable speaking routine from any text you choose. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.kuroneko-cmd.dev/privacy/sentencedeck/

About

Fluency Loop

Features
Read full description

Fluency Loop is a quiet speaking practice space for building fluency without pressure. Add a short text, recording, audio file, or video. Then practice in the way that fits the moment: follow along sentence by sentence, retell the main idea, or give your own view with a simple speaking guide. There are no grades, streak pressure, or public scores. Fluency Loop is designed to help you speak a little more often, notice your own progress, and feel safer making mistakes. What you can do: β€’ Practice with your own materials β€’ Follow along sentence by sentence β€’ Retell ideas in your own words β€’ Give your view with a reason and example β€’ Keep your practice history on device β€’ Review recordings and progress privately Privacy by default: Your practice materials, recordings, transcripts, and notes stay on this device by default. Core practice does not require an account or network connection. Fluency Loop is useful for English speaking practice, exam preparation, presentations, interviews, and daily conversation warmups. Fluency Loop is not officially affiliated with IELTS or any exam provider.

Screenshots

SentenceDeck4 screens
Fluency Loop4 screens

Verdict

The call

The clearest difference is in-app purchases: Fluency Loop at none against SentenceDeck's 3. Fluency Loop also leads on update cadence (every 3 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. SentenceDeck sells 3 one-off in-app purchases. Fluency Loop asks for nothing beyond the download.

UpkeepUpdate frequency

SentenceDeck ships an update every 6 months, Fluency Loop every 3 months. The most recent releases landed on September 29, 2026 and September 11, 2026 respectively.

Scorecard2 real differences Β· 4 level
SentenceDeck versus Fluency Loop: the parameters behind the verdict, then further details
ParameterSentenceDeckFluency Loop
PriceFreeFree
Update frequencyEvery 6 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 β€” better
Further details β€” not scored
Size10 MB152 MB
Age rating4+4+
Developerε₯‡ζΏ‚ δ»»ζ™“θΏͺ 樊

In-app purchases

3 purchases

SentenceDeck

One-time3
  • Credits 100$0.99
  • Credits 500$3.99
  • Credits 1200$7.99
None

Fluency Loop

No in-app purchases

Questions

Is SentenceDeck free?
SentenceDeck is free to download, with in-app purchases available.
Is Fluency Loop free?
Fluency Loop is free to download, with no in-app purchases.
Do SentenceDeck or Fluency Loop have ads?
Neither SentenceDeck nor Fluency Loop shows ads.
Which is updated more often, SentenceDeck or Fluency Loop?
SentenceDeck ships an update every 6 months, and Fluency Loop every 3 months. Most recently, SentenceDeck was updated on September 29, 2026 and Fluency Loop on September 11, 2026.

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