Comparison

SentenceDeck vs CalmLingo

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

Head to head
About

SentenceDeck

Features
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Shadowing, made simple. Paste any text — a news story, a podcast transcript, a page from your textbook — 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 — 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 (0.75Ɨ to 1.5Ɨ) without regenerating audio. WHAT'S NEW IN 1.5 • A redesigned home screen: pick up where you left off, and see today's sentences, your streak and your lifetime total at a glance • A richer premium voice with selectable voice styles • Free Sample articles so you can try the flow before adding your own text • 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 • 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 — 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 • Works with any text: articles, dialogues, exam material, notes for a presentation • Each sentence is cached for the selected premium voice and style — generate it once, practice as often as you like • Light, dark and system themes; 10 interface languages • iPhone and iPad PREMIUM VOICE PRICING • 6,000 characters (about 100 sentences) • 30,000 characters (about 500 sentences) • 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

CalmLingo

Features
Read full description

Tired of language learning apps that feel like a chore? Try CalmLingo! CalmLingo helps you learn Spanish and French by listening to short, beautifully narrated stories, podcasts, dialogues, and guided meditations — all in your target language. Pick up new vocabulary at your own pace, then reinforce it with quick quizzes and friendly conversations with Melo, your AI language companion. Whether you're a complete beginner or an intermediate learner brushing up on grammar and pronunciation, CalmLingo turns daily language practice into a soothing ritual you'll actually look forward to. WHAT YOU'LL LOVE • Calm audio content — Original stories, podcasts, dialogues, and meditations crafted for each level (Beginner and Intermediate). • Personalized language ritual — A daily plan with morning, lunch, and evening slots that fit your real life. • Quiz with Melo — A randomized, gamified review of the words you've collected from each lesson. • Melo Chat — Practice real conversations with Melo, swap roles, replay any line, and build speaking confidence at your own pace. • Smart Discover feed — Recommendations across travel, mindfulness, daily life, culture, work, relationships and more. • Library & Favorites — Save the content you love, revisit it any time, and track your progress. • Built-in ambience sounds — Optional rain, forest, fireplace and more for deeper focus. • Beautiful, distraction-free design — Calming themes for Stories, Podcasts, Dialogues and Meditations. LANGUAGES YOU CAN LEARN Spanish Ā· French — with more on the way. Translations are available in English. WHO IT'S FOR • Beginners taking their first steps in a new language • Intermediate learners who want to think and feel in their target language • Travelers preparing for a trip abroad • Busy professionals fitting language practice into a packed day • Mindfulness fans who love meditation, slow living, and audio learning Terms of Service: https://calmlingo.app/terms.html Privacy Policy: https://calmlingo.app/privacy.html Support: support@calmlingo.app #LearnSpanish #LearnFrench #LanguageLearning #LanguageApp #AudioLearning #PodcastLearning #ShortStories #LanguageMeditation #Mindfulness #DailyHabit #VocabularyBuilder #SpanishForBeginners #FrenchForBeginners #SpeakNewLanguage #PolyglotLife #SlowLearning #LanguageRitual #MeloChat #LanguageQuiz #AILanguageTutor #CalmLearning #MindfulLearning #SelfImprovement #LanguageJourney

Screenshots

SentenceDeck4 screens
CalmLingo4 screens

Verdict

The call

The clearest difference is in-app purchases: CalmLingo at none against SentenceDeck's 3. CalmLingo also leads on update cadence (every 5 days vs every 6 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

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

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

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

UpkeepUpdate frequency

SentenceDeck ships an update every 6 months, CalmLingo every 5 days. The most recent releases landed on September 29, 2026 and September 14, 2026 respectively.

Scorecard3 real differences Ā· 3 level
SentenceDeck versus CalmLingo: the parameters behind the verdict, then further details
ParameterSentenceDeckCalmLingo
PriceFreeFree
Update frequencyEvery 6 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size10 MB82 MB
Age rating4+4+
Developer儇濂 ä»»Anuradha Welivita

In-app purchases

3 purchases

SentenceDeck

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

CalmLingo

No in-app purchases

Questions

Is SentenceDeck free?
SentenceDeck is free to download, with in-app purchases available.
Is CalmLingo free?
CalmLingo is free to download, with no in-app purchases.
Do SentenceDeck or CalmLingo have ads?
Neither SentenceDeck nor CalmLingo shows ads.
Which is updated more often, SentenceDeck or CalmLingo?
SentenceDeck ships an update every 6 months, and CalmLingo every 5 days. Most recently, SentenceDeck was updated on September 29, 2026 and CalmLingo on September 14, 2026.

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