Comparison

Curio vs Idioms In Use

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

Head to head
About

Curio

Expand your general knowledge with bite-sized facts delivered through a swipeable interface. Engage with quizzes to reinforce learning and discover new interests across various categories. Become a more informed individual with daily doses of fascinating information.

Highlights
  • Swipeable fact cards
  • Experience points and leagues
  • Daily knowledge in snack format
  • Quizzes to solidify learning
  • Curated feed from 20+ categories
  • Conversation starters
Read full description

Forget dusty textbooks. In Curio, you swipe through facts, earn experience points, and climb the Curio leagues. This keeps your motivation consistently high while you expand your own general knowledge. Knowledge in snack format No time for long lectures? Curio facts are so compactly prepared that they fit perfectly into every gap in your daily routine. Whether you are on the train, waiting in line, or just before falling asleep, it is perfectly suited for quick learning on the go. Facts that stick Through numerous quizzes, you solidify what you have learned immediately. Instead of passive consumption, you engage your brain and anchor information securely in your long term memory. Always have a conversation starter In a world full of information, you will impress friends and colleagues with astonishing background knowledge. From quantum physics to quirky life hacks, with Curio you will always have an exciting story to tell. Discover your interests Curate your personal feed from over 20 categories and receive facts that truly fascinate you: - Science and Technology - History and Culture - Nature and Animals - Psychology and Philosophy - Space and Earth - Sports and more Why Curio? Thousands of curious minds are already using Curio daily to broaden their horizons. Install Curio for free today and start your personal journey of knowledge. Your next aha moment is just a swipe away. Contact Do you have questions or suggestions? I am constantly developing Curio and would love to hear your feedback. Simply send me an email at info@nalu-interactive.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Idioms In Use

Features
Read full description

Master over 1,000 essential English idioms naturally through clear explanations, authentic real-world examples, and smart interactive practice. Whether preparing for IELTS, international exams, professional interviews, or simply aiming to speak more like a native, this app gives you the complete toolkit to understand and remember idiomatic expressions effortlessly. WHY YOU WILL LOVE IT: - 62 Structured Lessons: Organized logically by everyday topics, vivid imagery, and common keywords from beginner to advanced. - Clear Meanings and Registers: Understand exact definitions, formal vs. informal usage, grammar notes, and alternative forms. - Audio Pronunciation: Clean on-device speech playback for every idiom so you speak with confidence. - Interactive Practice: Reinforce your knowledge with single-choice quizzes, fill-in-the-blanks, and matching exercises with instant feedback. - Spaced Repetition (SRS): Built-in SuperMemo-2 smart algorithm automatically schedules reviews right before you forget, moving idioms into your permanent long-term memory. - Personal Notebook: Bookmark expressions you encounter in daily life and add your own custom context notes or memory cues. - Track Your Mastery: Stay motivated with daily streaks, goal celebrations, star ratings, and milestone achievement badges. LEARN WITH ZERO DISTRACTIONS: - 100% Offline: All lessons, exercises, and audio work completely without an internet connection, perfect for your commute. - No Ads, No Tracking: Your learning data stays strictly private on your device. - Fair and Transparent: Core introductory units are free forever. Upgrade once with a single in-app purchase to unlock all 62 units for life, with no recurring subscriptions. Start learning today and express yourself with confidence!

Screenshots

Curio4 screens
Idioms In Use4 screens

Verdict

The call

The clearest difference is ads: Curio at none against Idioms In Use's shown. Idioms In Use's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 17.6). On price and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Curio sells 8 in-app purchases, starting at $2.99 per month and Idioms In Use sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard3 real differences ยท 5 level
Curio versus Idioms In Use: the parameters behind the verdict, then further details
ParameterCurioIdioms In Use
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 daysโ€”
AdsNo โ€” betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesโ€”
DevicesiPhoneiPhone, iPad, iPod, Mac โ€” better
Requires iOS17.615.0 โ€” better
Further details โ€” not scored
Size129 MB29 MB
Age rating4+4+
DeveloperKilian CerminHoa Nguyen Quang

In-app purchases

8 purchases

Curio

Subscriptions8
  • Curio Pro (1 Month)$2.991 Month
  • Curio Pro (1 Month)$3.991 Month
  • Curio Pro (1 Month)$6.991 Month
Show 5 more
  • Curio Pro (1 Month)$8.991 Month
  • Curio Pro (1 Year)$17.991 Year
  • Curio Pro (1 Year)$29.991 Year
  • Curio Pro (1 Year)$44.991 Year
  • Curio Pro (1 Year)7 Days trial$59.991 Year
1 purchases

Idioms In Use

One-time1
  • Idioms Pro$4.99

Questions

Is Curio free?
Curio is free to download, with in-app purchases available.
Is Idioms In Use free?
Idioms In Use is free to download, with in-app purchases available.
Do Curio or Idioms In Use have ads?
Idioms In Use shows ads; Curio does not.

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