K vs Visualization Training
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
K
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Learning Han characters in Korean You can learn by watching, listening, reading, and writing in Korean. - This application was created as a way to learn Chinese characters in Korean. The pronunciation of Chinese characters can be very different. - All Chinese characters in this application are pronounced in Korean. Also, Korean and Korean pronunciations are displayed. - Korea has long used and recorded Chinese characters. Some characters have a more accurate pronunciation and meaning than the Chinese pronunciation of Chinese characters. - The reason I worked on this application was to convey the correct Korean pronunciation and meaning of Chinese characters. Support information: - Terms of use and policy: http://www.citrineins.co.kr/new_privacy/english - Support website: http://www.citrineins.co.kr - Instagram follow address: https://www.instagram.com/citrine_ins thank you.
Visualization Training
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Turn "picturing things in your head" into a daily habit. Visualization Training is an app for strengthening your mental imagery β the ability to see pictures in your mind's eye β through short daily exercises. WHO IT'S FOR β’ Anyone who feels they struggle to form mental images (including those exploring aphantasia) β’ People who want to make imagination training a daily routine β’ Athletes and performers who use mental rehearsal β’ Anyone looking for a fresh alternative to meditation and mindfulness HOW IT WORKS 1. A prompt like "a slowly spinning metal umbrella" appears as text and is read aloud 2. Close your eyes and picture the scene in your mind 3. Rate how vividly you could see it Prompts are generated from random combinations of motion, texture, and color applied to everyday nouns β so every session gives you fresh material to imagine. TEXT ONLY, ON PURPOSE This app never shows you pictures or colors. Showing the answer would leave nothing to imagine. The words are the only hint β the image is yours to create. TRAIN WITH YOUR EYES CLOSED Every prompt is spoken aloud, so you don't need to look at the screen. In auto mode, prompts advance at your chosen interval, and audio keeps playing even when the screen is locked β stay focused with your eyes closed from start to finish. FEATURES β’ Auto mode (spoken prompts advancing at a set interval) and manual mode β’ Prompt languages: English, Japanese, Korean, and Chinese (Traditional & Simplified) β doubling as listening practice for language learning β’ Adjustable speech rate, session length, interval, chime, and haptics β’ Track your training time (today / all time), session history, and a weekly goal β’ My Words: add your own nouns and have them appear in prompts β’ Dark & light themes, iPhone & iPad support PREMIUM (ONE-TIME PURCHASE) All core features are free. A single one-time purchase unlocks unlimited My Words (free tier: up to 10) and CSV word import. No subscriptions. A few minutes a day is all it takes. Today's first session is the first step toward a sharper mind's eye.
Screenshots
Verdict
The clearest difference is price: Visualization Training at Free against K's $3.99. Visualization Training also leads on update cadence (weekly vs every 3 months). K's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 26.4). On ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Visualization Training is free to download; K costs $3.99 up front. Visualization Training sells 1 one-off in-app purchase. K asks for nothing beyond the download.
K ships an update every 3 months, Visualization Training weekly. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.
| Parameter | K | Visualization Training |
|---|---|---|
| Price | $3.99 | Free β better |
| Update frequency | Every 3 months | Weekly β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 11.0 β better | 26.4 |
| Further details β not scored | ||
| Size | 112 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Jongyun Park | Shingo Fukuyama |
In-app purchases
K
No in-app purchases
Visualization Training
- Premium$2.99
Questions
Is K free?
Is Visualization Training free?
Do K or Visualization Training have ads?
Which is updated more often, K or Visualization Training?
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