LexiSponge vs LeetCode
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LexiSponge
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LexiSponge is a vocabulary-first language learning app built around a simple idea: every new word you meet should have a place to go. Start with an empty vocabulary page and build your own language "second brain". Add words manually, or capture them from the things you already read, watch, hear, and photograph. LexiSponge helps turn text, images, camera captures, and recordings into vocabulary you can organize, review, and remember. Capture new words: - Add words manually whenever you notice them - Extract vocabulary from text - Capture words from images or your camera - Add words from audio and recordings - Import supported flashcard decks - Add common words to build a foundation faster Organize your language brain: - Tag words by topic, book, video, class, trip, or goal - Mark words as Known, Learning, or Ignored - Keep useful words visible and hide noise - Build a personal vocabulary database that grows with you - See the sentences words appear in Practice with smart flashcards: Turn vocabulary into flashcards and review them on iPhone or Apple Watch. LexiSponge uses FSRS v6, a modern spaced-repetition algorithm designed to schedule reviews when they are most useful, so you can spend more time learning and less time deciding what to study next. Smart Subtitles: LexiSponge’s experimental Smart Subtitles are designed for real listening practice. Instead of translating every sentence, you can focus only on selected words: show translations for words marked as Learning or Unknown, and keep the rest out of the way. This helps you listen to the original language, follow what is being said, and notice the vocabulary you are actively learning. For serious learners: LexiSponge is useful whether you are reading articles, watching videos, listening to conversations, studying with textbooks, preparing for travel, or building a long-term vocabulary system. Experimental tools include: - Smart Subtitles for focused listening - Apple Watch flashcard practice - Import from supported Anki flashcard formats - Export for supported Yomitan dictionary workflows - Common-word vocabulary setup LexiSponge is not just a dictionary, translator, or flashcard app. It is a place to collect the words you meet, decide what matters, and keep learning them across your daily life. If you enjoy using LexiSponge, please rate us in the App Store! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
LeetCode
Practice coding challenges and prepare for technical interviews on the go. Discover company-specific questions, manage your practice lists, and track your progress. Stay updated with contests and daily quests to improve your skills.
- Search and discover company questions
- Practice coding challenges
- Manage practice lists
- Track personal progress
- Contest registration and calendar sync
- Daily challenges and quests
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One LeetCode a day keeps your reasoning in play. Introducing LeetCode for iOS and iPadOS. Enjoy LeetCoding right at your fingertips — jump in for quick practice, browse your collections, and stay on top of important events and progress. With LeetCode in the palm of your hand, you can easily: • Search and discover the latest company questions. • View and quickly practice your favorite challenges right in the palm of your hand. • Manage your lists or add to your wishlist to practice later. • Keep track of your personal progress with a rich profile view and widgets. • Stay notified and keep your streak alive — level up with new challenges and quests every day. • Register for contests and sync them to your calendar. Live Activities keep you updated on contest progress — so you never miss a moment. • And more content and features coming every month… Terms of Services: https://leetcode.com/terms/ Privacy Policy: https://leetcode.com/privacy/
Screenshots
Verdict
The clearest difference is iOS requirement: LeetCode at 16.0 against LexiSponge's 26.0. On price, ads, in-app purchases 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
Both are free to download. LexiSponge sells 3 in-app purchases, starting at $4.99 per month and LeetCode sells 2 in-app purchases, starting at $35.00 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | LexiSponge | LeetCode |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (655 ratings) — better |
| Positive reviews | — | 44.2% of reviews |
| Number of ratings | — | 655 — better |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomas Tauber | LeetCode |
In-app purchases
LexiSponge
- Monthly Support$4.991 Month
- Yearly Support$29.991 Year
- One-Time Support$49.99
LeetCode
- LeetCode Premium Monthly$35.001 Month
- LeetCode Premium Yearly$159.001 Year









