KoreanNumber vs Keystitch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KoreanNumber
Learn Korean numbers through interactive game modes. Master both Sino-Korean and Native Korean number systems. Practice converting numbers to Korean and vice versa.
- Sino Korean Number learning
- Native Korean Number learning
- Number to Korean conversion
- Korean to Number conversion
- Multiple game modes
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Let's learn Korean number in this game. All modes are available. Sino Korean Number Native Korean Number 1 > Korean Number Korean Number > 1
Keystitch
Develop a visual understanding of music theory with short, focused drills. Train your mental keyboard for intervals, keys, and melodies. Practice hands-free and track your progress with adaptive exercises.
- Visual keyboard drills
- Interval and key recognition
- Melody tracking
- Solfège practice
- Hands-free practice modes
- Adaptive learning
- Progress tracking charts
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See the music. Keystitch trains the skill underneath every musical skill: a clear mental picture of the keyboard, so intervals, keys, and melodies stop being abstractions and start being shapes you can see. Most music education starts a few steps too advanced — past the hidden mental machinery that lets a lucky few learn so fast. Keystitch takes the other road: short, focused drills, served a couple of minutes at a time, that build durable skill with minimal wasted effort — in an app that adapts to what you can actually do, not what a lesson plan assumes. WHAT YOU'LL DO • Hear a sequence of notes and track them on your mental keyboard — then tap the note you landed on, or just say it. • Read intervals, keys, and clefs until notation feels like moves on a keyboard and not a strange language. • Hear a phrase and sing or speak it back in solfège, graded note by note. • Practice hands-free: eyes closed, prompts spoken, answers spoken back. HOW IT WORKS • A journey that serves the right drill at the right level, two minutes at a time. • Answer by voice, by touch, or by singing — fixed-do solfège throughout. • Progress you can see: every answer feeds charts of what you know cold and what needs work. • Practice goals and streaks if you want them — and never a punishment if you don't. FREE, AND WHAT MEMBERSHIP ADDS Every drill, every level, and every mode is open to everyone. Free practice starts with a full opening hour, then four minutes a day — counted only while a question is on screen. Membership removes the time limit, and today's price is the Early Adopter price: it will go up, but if you join at it, your price stays yours for as long as you stay subscribed. Nothing leaves your device: no account, no tracking, no ads. See the privacy policy for the whole story. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our promises to members: https://keystitch.net/terms Privacy policy: https://keystitch.net/privacy
Screenshots
Verdict
The clearest difference is rating: Keystitch at 5.0 against KoreanNumber's 4.3. Keystitch also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 months). KoreanNumber's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On price and ratings volume 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. Keystitch sells 3 in-app purchases, starting at $5.99 per month. KoreanNumber asks for nothing beyond the download.
Keystitch holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
KoreanNumber ships an update every 3 months, Keystitch every 3 days. Both last shipped on October 24, 2026.
| Parameter | KoreanNumber | Keystitch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 65 MB | 109 MB |
| Age rating | 4+ | 4+ |
| Developer | kazumasa fujihara | Joshua Lucan |
Customer experience
KoreanNumber
Keystitch
In-app purchases
KoreanNumber
No in-app purchases
Keystitch
- Monthly$5.991 Month
- Yearly$29.991 Year
- Original Member$199.99
Questions
Is KoreanNumber free?
Is Keystitch free?
Which has better reviews, KoreanNumber or Keystitch?
Do KoreanNumber or Keystitch have ads?
Which is updated more often, KoreanNumber or Keystitch?
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