Comparison

KoreanNumber vs Keystitch

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

Head to head
About

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.

Highlights
  • Sino Korean Number learning
  • Native Korean Number learning
  • Number to Korean conversion
  • Korean to Number conversion
  • Multiple game modes
Features
Read full description

Let's learn Korean number in this game. All modes are available. Sino Korean Number Native Korean Number 1 > Korean Number Korean Number > 1

About

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.

Highlights
  • Visual keyboard drills
  • Interval and key recognition
  • Melody tracking
  • Solfège practice
  • Hands-free practice modes
  • Adaptive learning
  • Progress tracking charts
Features
Read full description

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

KoreanNumber4 screens
Keystitch4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Keystitch sells 3 in-app purchases, starting at $5.99 per month. KoreanNumber asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

KoreanNumber ships an update every 3 months, Keystitch every 3 days. Both last shipped on October 24, 2026.

Scorecard7 real differences · 3 level
KoreanNumber versus Keystitch: the parameters behind the verdict, then further details
ParameterKoreanNumberKeystitch
PriceFreeFree
Rating4.3 (3 ratings)5.0 (2 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings3 — better2
Update frequencyEvery 3 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size65 MB109 MB
Age rating4+4+
Developerkazumasa fujiharaJoshua Lucan

Customer experience

KoreanNumber

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

Keystitch

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

KoreanNumber

No in-app purchases

3 purchases

Keystitch

Subscriptions2
  • Monthly$5.991 Month
  • Yearly$29.991 Year
One-time1
  • Original Member$199.99

Questions

Is KoreanNumber free?
KoreanNumber is free to download, with no in-app purchases.
Is Keystitch free?
Keystitch is free to download, with in-app purchases available.
Which has better reviews, KoreanNumber or Keystitch?
Keystitch is rated higher. KoreanNumber averages 4.3 out of 5 from 3 ratings, while Keystitch averages 5.0 from 2 ratings.
Do KoreanNumber or Keystitch have ads?
KoreanNumber shows ads; Keystitch does not.
Which is updated more often, KoreanNumber or Keystitch?
KoreanNumber ships an update every 3 months, and Keystitch every 3 days. Most recently, KoreanNumber was updated on October 24, 2026 and Keystitch on October 24, 2026.

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