FlashFluency vs NumEar.JP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlashFluency
Master Korean from basic Hangul to fluency with AI-powered pronunciation feedback and sentence building. Learn one new concept at a time with spaced repetition for effective memorization. Instant explanations for vocabulary and grammar are available.
- Syllable-level AI pronunciation feedback
- AI sentence coach for writing practice
- +1 system for learning one concept at a time
- Spaced repetition for memorization
- Instant vocabulary and grammar explanations
- Frictionless learning experience
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Flash Fluency is an all-in-one Korean app, from Hangul to fluency. So is every other app. Here's what's different. CONTENT-TO-CURRICULUM Song lyrics, a news article, your class notes, a drama script. Bring any Korean you actually care about and Flash Fluency pulls out every vocab word and grammar point, then teaches them to you in new sentences. SYLLABLE-LEVEL PRONUNCIATION FEEDBACK AI feedback on every syllable you speak, covering every Korean pronunciation rule. Your recording beside a native voice, block by block, so you know exactly what you got wrong and how to fix it. TRANSLATION COACHING Write real Korean from your first lesson. Every sentence comes back with corrections, naturalness tips, and style notes, down to the particle. +1 AND SRS Each sentence introduces exactly one new concept, so you're never lost. Spaced repetition brings it back right before you'd forget it. SKILLS THAT STACK Read it, hear it, recall it, translate it, speak it. Each stage feeds the next. Complete beginner? Start with the Hangul course, then Korean Fundamentals. No prior Korean needed. Coming soon: conversational exercises, AI-assisted writing, and a 10,000-word TOPIK learning order. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.flashfluency.net/privacy_policy
NumEar.JP
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NumEar helps you master listening to Japanese numbers through focused, bite-sized practice sessions. Hear a number spoken aloud, type what you hear, and get instant feedback. Whether you're learning Japanese as a second language or preparing for exams like JLPT, understanding spoken numbers is one of the trickiest skills to develop. NumEar makes it easy with structured training across a wide range of number types. WHAT YOU CAN PRACTICE - Integers: From single digits to 9-digit numbers, with both standard and grouped pronunciation - Decimals: Practice hearing decimal points and digit sequences - Time: 12-hour (AM/PM) and 24-hour formats - Dates: Month and day, with or without year - Weekdays: Hear a day name and select the correct one - Phone Numbers: 11-digit phone numbers read digit by digit SMART FEATURES - Rolling Stats: Track your accuracy and response time with per-category charts DESIGNED FOR LEARNERS - Clean, distraction-free interface with a custom numeric keypad - Replay any question as many times as you need - Response time measured from when audio starts — just like real listening - Works entirely offline — no internet required for practice
Screenshots
Verdict
The clearest difference is update cadence: NumEar.JP at weekly against FlashFluency's every 4 weeks. FlashFluency's advantage is iOS requirement (13.0 vs 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. FlashFluency sells 2 in-app purchases, starting at $5.99 per month and NumEar.JP sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
FlashFluency ships an update every 4 weeks, NumEar.JP weekly. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.
| Parameter | FlashFluency | NumEar.JP |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 93 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | Flash Fluency | YE LIN |
In-app purchases
FlashFluency
- Flash Fluency Core7 Days trial$5.991 Month
- Flash Fluency Premium7 Days trial$12.991 Month
NumEar.JP
- Support the Developer$0.99





