Malmoi vs Lingo Sperm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Malmoi
Master Korean pronunciation and grammar with this comprehensive learning tool. It focuses on how words are actually spoken, offers conjugation drills, and includes a vast dictionary with multiple language translations. Prepare for exams with reading, listening, writing, and mock test modules.
- Pronunciation trainer with computed rules
- Irregular verb and adjective conjugation drills
- 44,000-word dictionary with multi-language meanings
- 296 grammar patterns with examples
- Reading, listening, and writing practice modules
- TOPIK mock tests and writing scoring
- Offline functionality
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Korean is not read the way it is written. 값이 is [갑씨], 국물 is [궁물], 좋다 is [조타]. Malmoi is built around that fact. • Pronunciation trainer — the standard pronunciation rules, computed. Wrong answers are plausible misreadings of the same word, not other words, so you cannot guess by shape. • Conjugation drills — ㅂ, ㄷ, ㅅ, 르, ㅎ irregulars sorted automatically, with the full conjugation table for every verb and adjective. • 44,000 words with meanings, hanja origins, examples and the standard pronunciation published by the National Institute of Korean Language. Meanings come in English, Korean, Japanese, Chinese and Vietnamese at beginner and intermediate levels. • 296 grammar patterns across six levels, each with attachment rules and two examples. • Reading — passages, sentence ordering, newspaper headlines, sentence insertion. • Listening — dialogues read aloud at study speed and exam speed. • Writing — character count, style consistency, spoken-language check, and the official scoring rubric with a model answer. • Mock tests for both exam types, with the level a total score would give. Everything runs on your device. No account, no server, and it works with no connection. Levels are an estimate. There is no official published word list, so levels start from the beginner/intermediate/advanced grading of the National Institute of Korean Language and are split further by corpus frequency. Mock scores are an estimate as well — the official conversion table is not published, and writing is self-scored. Not affiliated with or endorsed by NIIED or the TOPIK organisers. Dictionary data from the Korean Basic Dictionary, National Institute of Korean Language (KOGL Type 1). Also Wiktionary (CC BY-SA 4.0) and OpenSubtitles / FrequencyWords (CC BY-SA 4.0). Free: all of Level 1, the first words, grammar, reading and listening of every level, 15 drill questions a day per type, the TOPIK I mock test and writing tasks 51–52. No ads, no account. Malmoi Premium unlocks everything: Monthly (1 month) or Yearly (1 year) auto-renewing subscription, or the Lifetime Pass — a one-time purchase that never renews. Prices are shown in the app in your local currency. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel in your account settings. Already using Malmoi? If you used it before version 1.0.5, every feature stays free on that device, for good. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://inphilchoi.github.io/malmoi-privacy/
Lingo Sperm
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Bio Lingo turns vocabulary practice into a race. You swim up three lanes. A word appears. Three translations drift toward you — swim into the one you think is right. Get it right and you move closer to the egg. Get it wrong and you slip back. Reach the egg and you win the run. Between questions the lanes fill up: cells to collect and rivals to dodge. One run takes about a minute. WHY IT WORKS • The word shows up before the answers do, so you have to actually recall it instead of just recognizing it. • Words you miss come back sooner. Words you know come back later, then stop. • Three speeds. Pick how long you get to read. • Six levels, from beginner to advanced. WHAT YOU CAN LEARN • English to Russian • Spanish to English FEATURES • Over 14,000 words across both sets • Works offline — everything is in the app • Win runs to climb six ranks • Review the words you got wrong • No ads Your first game is free. After that, unlock everything with a one-time purchase or a weekly plan. The weekly plan renews automatically until cancelled. You can cancel anytime in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.lingo-sperm.online/privacy Between questions the lanes fill up: cells to collect and rivals to dodge. One run takes about a minute. WHY IT WORKS • The word shows up before the answers do, so you have to actually recall it instead of just recognizing it. • Words you miss come back sooner. Words you know come back later, then stop. • Three speeds. Pick how long you get to read. • Six levels, from beginner to advanced. WHAT YOU CAN LEARN • English to Russian • Spanish to English FEATURES • Over 14,000 words across both sets • Works offline — everything is in the app • Win runs to climb six ranks • Review the words you got wrong • No ads Your first game is free. After that, unlock everything with a one-time purchase or a weekly plan. The weekly plan renews automatically until cancelled. You can cancel anytime in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.lingo-sperm.online/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Malmoi at none against Lingo Sperm's 3. Malmoi also leads on update cadence (every 3 days vs fortnightly). On price, ads, device support and iOS requirement 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. Lingo Sperm sells 3 in-app purchases, starting at $1.99 per 7 days. Malmoi asks for nothing beyond the download.
Malmoi ships an update every 3 days, Lingo Sperm fortnightly. The most recent releases landed on October 31, 2026 and November 13, 2026 respectively.
| Parameter | Malmoi | Lingo Sperm |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 39 MB | 38 MB |
| Age rating | 4+ | 17+ |
| Developer | INPHIL CHOI | Galymzhan Zhakangerov |
In-app purchases
Malmoi
No in-app purchases
Lingo Sperm
- Full Access — Weekly$1.997 Days
- Bio Lingo Premium3 Days trial$19.991 Year
- Bio Lingo Lifetime$19.99









