Comparison

독기 vs RoboTrail Coding Brain Trainer

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

Head to head
About

독기

Access past exam papers for Korean language reading comprehension, categorized by subject area and year. Download PDF files for various exams, including the national college entrance test and mock evaluations.

Highlights
  • Subject area PDF downloads
  • Yearly exam PDF downloads
  • National college entrance test papers
  • Mock evaluation papers
  • Reading comprehension focus
Features
Read full description

- 인문, 사회, 과학 등 영역 별 기출 필터 기능 제공 - 연도 별 수능, 6/9월 평가원 모의고사 PDF 파일 및 정답 제공

About

RoboTrail Coding Brain Trainer

Features
Read full description

"AI gives answers, but you have to build your own thinking." In the age of AI, the key skill is not writing code well, but breaking problems down well. RoboTrail uses code-free command puzzles to measure and train the thinking muscles behind abstraction, decomposition, simulation, and working memory. All content is free, supported by ads. Campaign Mode - 108 stages across 10 levels Move your robot to the star across 108 stages. Start with arrow (up) commands, then learn function calls (F1, F2, F3), nested abstraction, color conditions, and efficiency compression, step by step. - Levels 1 to 3: command basics, spatial simulation, and spotting repeating patterns to group into functions - Levels 4 to 6: code reuse with F1, nested decomposition where F2 calls F1, then full synthesis - Levels 7 to 10: color conditions, large grids over 6x6, tight slot caps that force compression, and a master ceiling Each stage is graded up to three stars: fewest commands for three stars, efficient for two, a clear for one. Challenge Mode - 36 questions across 3 areas Measure your coding thinking objectively. Each area is timed, taken one at a time. Every attempt records your score, grade, and solving pattern. - Simulation (8 questions): track rotation and movement in your head - Pattern thinking (14 questions): find cycles and generalize reusable groups into F1 and F2 - Abstraction (14 questions): nested functions and layered decomposition across F1, F2, F3 Each area analyzes accuracy, solving time, deliberation before the first move, and trial-and-error count. Six master-ceiling questions per area carry 2.5x weight to distinguish the top 1 percent. Challenge Modes - same stage, new constraints Replay any three-star puzzle in three modes: - Speed: clear within 30 seconds - Tight slots: slot cap cut by half, forcing function use - Perfect: solve with exactly the minimum commands Collect up to three medals per stage. Daily Challenge One curated puzzle every day, with a live count of how many cleared it. Build your thinking one problem at a time. What you get - An overall thinking score from 0 to 100 with a 5-level grade - Strength and weakness charts by area - A growth-trend graph by attempt, so progress is objectively visible - Solving-pattern analysis: careful, trial-and-error, or balanced type - Campaign stages recommended for your weak areas - Star distribution, total play time, and fastest clear records Who it is for - Elementary, middle, and high school students interested in coding - Parents who want an honest measure of a child's logic and abstraction - Professionals warming up before an algorithm interview - Anyone wanting an objective look at their own thinking patterns - A pre-assessment tool for gifted programs and coding academies Honest measurement Instead of exaggerated phrases like aptitude test or brain IQ, we use honest wording such as thinking measurement and grade calculation. We do not claim percentiles until enough data accumulates. Use your own growth trend as the benchmark. Ads and Sync Ads run as banners and occasional interstitials, with frequency capping to protect the learning flow, and non-personalized ads by default. Progress backs up through Apple GameCenter and restores with your Apple ID, with no sign-up required. Recommended age: 12 and up

Screenshots

독기3 screens
RoboTrail Coding Brain Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: 독기 at none against RoboTrail Coding Brain Trainer's 1. RoboTrail Coding Brain Trainer's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RoboTrail Coding Brain Trainer sells 1 one-off in-app purchase. 독기 asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 6 level
독기 versus RoboTrail Coding Brain Trainer: the parameters behind the verdict, then further details
Parameter독기RoboTrail Coding Brain Trainer
PriceFreeFree
Positive reviews93.3% of reviews—
Update frequencyEvery 5 daysEvery 5 days
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size61 MB40 MB
Age rating4+4+
Developerdongwan ryoowoosik choi

In-app purchases

None

독기

No in-app purchases

1 purchases

RoboTrail Coding Brain Trainer

One-time1
  • 광고 제거$1.99

Questions

Is 독기 free?
독기 is free to download, with no in-app purchases.
Is RoboTrail Coding Brain Trainer free?
RoboTrail Coding Brain Trainer is free to download, with in-app purchases available.
Do 독기 or RoboTrail Coding Brain Trainer have ads?
Both 독기 and RoboTrail Coding Brain Trainer show ads.
Which is updated more often, 독기 or RoboTrail Coding Brain Trainer?
독기 ships an update every 5 days, and RoboTrail Coding Brain Trainer every 5 days. Most recently, 독기 was updated on October 1, 2026 and RoboTrail Coding Brain Trainer on October 10, 2026.

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