Comparison

Synapse vs KarmiloFox

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

Head to head
About

Synapse

This app focuses on language learning through sound and memory, using immersive stories and ear training exercises. It offers visual grammar guides, camera-based flashcards, and collaborative learning features. Learn 26 languages with a science-backed approach.

Highlights
  • Immersive story podcasts
  • Science-based ear training
  • Camera-powered flashcards
  • Visual grammar tables
  • Collaborative sentence practice
  • Alphabet courses from zero
Features
Read full description

You are not too old. The "critical period" is a myth: adult brains still rewire with intentional focus plus quality restful sleep. Synapse is a language learning app built on that science: train your ear first, make mistakes on purpose, and let each night of sleep lock in the day's practice. No streaks to protect, no guilt trips. STORY PODCASTS Follow a whole story in your new language on day 1. Short, immersive stories told slowly and clearly: read along word by word, tap anything to learn it instantly, and keep listening with the screen locked — a podcast that teaches. EAR TRAINING Hear the difference between words that used to sound identical. Your native language decides which sounds you can't hear yet; listening exercises built for your exact native/target pair train you to catch what native speakers hear effortlessly. Soundalike drills then tackle the words that trip learners up. ALPHABETS FROM ZERO Sound out real words in an alphabet that was pure noise to you last week. Letter-by-letter audio courses take you from zero, one sound at a time. (Rolling out language by language.) FLASHCARDS FROM YOUR LIFE Learn the words your own life is made of. Point your camera at anything with Language Lens and learn its name on the spot; spaced repetition then brings each word back right before you'd forget it, so it sticks for good. GRAMMAR YOU CAN SEE Say the right form without reciting a rule. Conjugations and cases as clear visual tables, linked to real example sentences — patterns instead of memorized rules. LEARN TOGETHER Trade your first real sentences with another person this week. Pair up with a partner and exchange short daily messages in each other's target language. Family kits (select language pairs) give parents and kids a shared track. 26 LANGUAGES Korean, Japanese, Spanish, French, Vietnamese, Russian, German, Italian, Portuguese, Arabic, Hindi and more — with the interface in your own language too. THE METHOD Free video lessons at synapseko.com explain the science behind it all. Your progress follows you to any device with a free account. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KarmiloFox

Features
Read full description

Build your language skills, word by word. KarmiloFox is a visual vocabulary builder for learning English, Italian, Spanish, French, German, Mandarin Chinese, Japanese, and Korean. Short, focused practice sessions help you discover useful words, hear their pronunciation, type them from memory, and review them with spaced repetition. A clean, guided learning flow makes daily vocabulary practice simple and consistent. Instead of long lessons or distracting exercises, KarmiloFox helps you learn, recall, and remember new words step by step. Main Features: • Visual Vocabulary Cards Connect words with clear illustrations that make their meanings easier to understand and remember. • Smart Spaced Repetition Review vocabulary at the right time and strengthen long-term recall. • Pronunciation Audio Listen to word pronunciations and become more familiar with how each language sounds. • Translations and Reading Guides See helpful translations and learner-friendly pronunciation guides, including phonetic transcription, Pinyin, Kana with Romaji, and Korean romanization where applicable. • Typing Exercises Practice active recall by typing words from memory instead of only selecting answers. • Topic-Based Learning Explore practical vocabulary organized into useful topics and categories. • Progress Tracking Keep track of your learned, repeated, known, and active words in one place. • Eight Learning Languages Build vocabulary in English, Italian, Spanish, French, German, Mandarin Chinese, Japanese, or Korean. • Offline Starter Content Selected starter vocabulary and audio are included with the app. Internet access is required to activate Premium and download additional content. • No Third-Party Ads Stay focused on learning without third-party advertising. KarmiloFox is designed for learners who want a beautiful, focused, and practical way to improve their vocabulary every day. KarmiloFox requires an active Premium subscription to access its learning content and features. Subscription prices, billing periods, auto-renewal terms, and any available trials or offers are displayed before purchase. Subscriptions can be managed or canceled through your App Store account settings. Privacy Policy: https://karmilofox.online/privacy Terms of Use: https://karmilofox.online/terms Support: https://karmilofox.online/contact

Screenshots

Synapse4 screens
KarmiloFox4 screens

Verdict

The call

The clearest difference is update cadence: Synapse at every 4 days against KarmiloFox's every 2 weeks. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Synapse sells 4 in-app purchases, starting at $9.99 per 7 days and KarmiloFox sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Synapse ships an update every 4 days, KarmiloFox every 2 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 9 level
Synapse versus KarmiloFox: the parameters behind the verdict, then further details
ParameterSynapseKarmiloFox
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size183 MB411 MB
Age rating4+4+
DeveloperThe Synaptic Learning Company LLCPyotr Kodzhebsh

In-app purchases

4 purchases

Synapse

Subscriptions3
  • Full Access$9.997 Days
  • Full Access$29.991 Month
  • Full Access7 Days trial$199.991 Year
One-time1
  • 100 Tutor Messages$1.99
2 purchases

KarmiloFox

Subscriptions2
  • Premium Monthly14 Days trial$2.991 Month
  • Premium Yearly14 Days trial$14.991 Year

Questions

Is Synapse free?
Synapse is free to download, with in-app purchases available.
Is KarmiloFox free?
KarmiloFox is free to download, with in-app purchases available.
Do Synapse or KarmiloFox have ads?
Neither Synapse nor KarmiloFox shows ads.
Which is updated more often, Synapse or KarmiloFox?
Synapse ships an update every 4 days, and KarmiloFox every 2 weeks. Most recently, Synapse was updated on October 24, 2026 and KarmiloFox on October 9, 2026.

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