MotiTan vs RnDotTracer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MotiTan
Master vocabulary for Japanese, Korean, Chinese, Spanish, French, and German with engaging quizzes and game modes. Prepare for official language proficiency exams and track your progress with smart review tools. Learn on the go with audio playback and customizable word books.
- Real-time vocabulary quiz battles
- Adventure mode with instant explanations
- Word Army game mode
- Smart word books and custom review
- Audio autoplay with speed control
- Preparation for JLPT, TOPIK, HSK, and more
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MotiTan is a vocabulary app for English speakers learning Japanese, Korean, Chinese (Mandarin), Spanish, French, and German. Prepare for the JLPT (N5–N1), TOPIK, HSK, AP Chinese, AP Spanish, DELE, DELF/DALF, TEF/TCF Canada, and Goethe-Zertifikat. Learn through 50-second real-time quiz battles, Adventure mode, and the new Word Army mode, and review words before you forget them. "Just one more battle." Before you know it, you know more words than you did yesterday. The joy of winning a quick match overlaps with the pure satisfaction of realizing you actually remembered the word when it mattered. ■ 50-second real-time vocabulary battles Jump into quick 50-second quiz battles against friends or other players in real time. Each match is fast and focused, making it easy to fit meaningful vocabulary practice into short breaks during your day. You can compete in the Citizen League rankings, or choose to practice comfortably without joining the league. ■ New: Word Army Open it from the banner on the Home screen. Steer your army left and right, and grow it with number gates and word questions (pick the meaning or the right picture); a wrong answer shrinks it. Dodge obstacles and defeat word enemies, each showing the word and its translation, then face the boss at the end. It uses words from the course you are studying, in any language. Choose from three difficulty levels; stages change every time you play. ■ Adventure mode with instant explanations Meet each word naturally in Adventure mode. Learn vocabulary through clear pictures, audio pronunciations, and example sentences while answering quizzes. If you make a mistake, explanations appear immediately so you can correct your understanding on the spot. You can also look up words anytime using the built-in dictionary. ■ Smart word books and custom review Keep your vocabulary organized automatically. Your word book sorts words based on how well you know them, helping you review weak or almost-forgotten terms before they slip away. You can also create your own custom word books for specific goals, and add words from a photo of a textbook or handout. Take a vocabulary level check to measure your current knowledge and select the ideal course for your level. ■ Listen on the go Turn on audio autoplay to listen to your words wherever you are. Adjust audio through 7 speed settings ranging from 0.5x to 3.0x. Background playback keeps audio running smoothly even when your screen is locked. Keep track of your consistency with learning records, complete missions, and dress up your characters. ■ Courses for English speakers Expand your vocabulary in Japanese, Korean, Chinese (Mandarin), Spanish, French, or German: - Japanese: Conversation, JLPT, Kids - Korean: Conversation, TOPIK, Kids - Chinese: Conversation, HSK, AP Chinese, Kids - Spanish: Conversation, DELE, AP Spanish, Kids - French: Conversation, DELF/DALF, TEF/TCF Canada, Kids - German: Conversation, Goethe-Zertifikat, Kids ■ Sister app integration MotiTan is made by Astran in Tokyo. You can log in with the same account across both MotiTan and our sister conversation app, MotiSpi, to build your vocabulary and conversational skills together. ■ Free to start MotiTan is free to start. Some features include paid plans and usage limits. A Family plan is also available for parents managing their family's learning experience. Terms of Use https://motitown.com/notification/document/legal-privacy/riyokiyaku Privacy Policy https://motitown.com/notification/document/legal-privacy/motitan AP is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this app.
RnDotTracer
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This app is a brain training app that challenges your short-term memory, or “working memory.” Specifically, it challenges your ability to remember the arrangement and order of objects on a flat plane. How to Play: A set number of dots are displayed sequentially on a plane. After they are hidden, you trace the dot sequence. If it matches exactly, it's correct. If more than half match, you pass. You complete a set number of these challenges to see your accuracy rate. Getting all challenges correct is a Perfect Game. Your score is calculated based on the number of dots, number of sets, and accuracy rate, and you compete with others. Getting consecutive correct answers earns bonus points. You can record your score with a nickname and view your rank. This offers the following benefits: ・Gain an estimate of your working memory capacity. ・Repeated practice may increase your working memory capacity. ・Similarly, it may help prevent or slow down declines in ability, such as those associated with aging. ・It trains concentration, and above all, getting answers right is fun. Features: ・Number of dots displayed: Selecting tabs on the game screen allows choosing from three consecutive dot counts per stage (ranging from 3 to 14 dots total). Increasing the dot count makes the game significantly harder. ・Number of trials per game: Choose from 1, 3, 5, or 10 trials. There's also a mode where you can play up to 10 times, ending upon a mistake. ・Dot types: Choose between numbered dots (where the display order is clear even later) and unnumbered dots. ・Trial mode: Challenge yourself by increasing the dot count sequentially from 3 dots (up to a maximum of 18 dots). Ends upon a mistake. Choose between numbered or unnumbered dots. ・Primarily designed for individual play, but you can register scores with custom nicknames upon game completion, allowing friendly competition among family members. Aim for that high score! While the tasks are simple and straightforward, you'll discover how the difficulty skyrockets as the number of dots increases—making for an intriguing experience.
Screenshots
Verdict
The clearest difference is in-app purchases: RnDotTracer at none against MotiTan's 10. MotiTan's advantage is update cadence (every 8 days vs every 7 months) and iOS requirement (15.0 vs 18.6). On price, ads 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. MotiTan sells 10 in-app purchases, starting at $9.99 per month. RnDotTracer asks for nothing beyond the download.
MotiTan ships an update every 8 days, RnDotTracer every 7 months. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | MotiTan | RnDotTracer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (154 ratings) — better | — |
| Positive reviews | 52.6% of reviews | — |
| Number of ratings | 154 — better | — |
| Update frequency | Every 8 days — better | Every 7 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 557 MB | 11 MB |
| Age rating | 4+ | 12+ |
| Developer | Astran Inc. | 有限会社知識情報研究所 |
In-app purchases
MotiTan
- 1-Month Plan (Special Offer)3 Days trial$9.991 Month
- 1-Month Plan$10.991 Month
- 12-Month Plan (Special Offer)3 Days trial$59.991 Year
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- 12-Month Plan (Special Offer)$59.991 Year
- 12-Month Plan$71.991 Year
- Family Plan (Special Offer)3 Days trial$71.991 Year
- Family Plan (Special Offer)14 Days trial$71.991 Year
- Family Plan (Special Offer)$71.991 Year
- Family Plan$89.991 Year
- 1 Motivation Gem$0.99
RnDotTracer
No in-app purchases









