Comparison

IELTS Slay vs CalmLingo

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

Head to head
About

IELTS Slay

Enhance your English vocabulary and grammar skills for the IELTS exam. This adaptive learning app uses a sophisticated algorithm to tailor quizzes to your proficiency level, helping you improve quickly. Developed by experts with over 20 years of educational technology experience.

Highlights
  • Adaptive quiz questions
  • Rasch algorithm for personalized learning
  • Vocabulary and grammar practice
  • IELTS level improvement
  • Developed by educational technology experts
Features
Read full description

IELTS® Slay is an adaptive IELTS vocabulary and grammar practice app. It delivers quiz questions according to the student's proficiency in English using the highly effective Rasch algorithm. Using it regularly improves the student's IELTS level in a very short time. It has been proudly developed by CommonTown which has more than 20 years of experience in educational technology research and products.

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 · 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

IELTS Slay4 screens
CalmLingo4 screens

Verdict

The call

The clearest difference is in-app purchases: CalmLingo at none against IELTS Slay's 1. IELTS Slay's advantage is iOS requirement (13.1 vs 15.1). 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. IELTS Slay sells 1 one-off in-app purchase. CalmLingo asks for nothing beyond the download.

UpkeepUpdate frequency

IELTS Slay ships an update weekly, CalmLingo every 5 days. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
IELTS Slay versus CalmLingo: the parameters behind the verdict, then further details
ParameterIELTS SlayCalmLingo
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.1 — better15.1
Further details — not scored
Size16 MB82 MB
Age rating4+4+
DeveloperCommonTown Pte LtdAnuradha Welivita

In-app purchases

1 purchases

IELTS Slay

One-time1
  • Premium Access$4.99
None

CalmLingo

No in-app purchases

Questions

Is IELTS Slay free?
IELTS Slay is free to download, with in-app purchases available.
Is CalmLingo free?
CalmLingo is free to download, with no in-app purchases.
Do IELTS Slay or CalmLingo have ads?
Neither IELTS Slay nor CalmLingo shows ads.
Which is updated more often, IELTS Slay or CalmLingo?
IELTS Slay ships an update weekly, and CalmLingo every 5 days. Most recently, IELTS Slay was updated on October 11, 2026 and CalmLingo on October 18, 2026.

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