# RoboTrail Coding Brain Trainer — Logic & algorithm puzzle game

> Logic & algorithm puzzle game (iPhone/iPad app by woosik choi.)

- Source: https://appshunter.io/ios/app/robotrail-coding-brain-trainer/id6764465655 (this page in markdown: same URL + `.md`)
- Developer: [woosik choi](https://appshunter.io/developer/1845521022)
- Category: Education, Games, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 40 MB
- Languages: American English
- Released: 2026-05-13
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/robotrail-coding-brain-trainer/id6764465655/reviews.md

## What is RoboTrail Coding Brain Trainer?

"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


## Version history (last 5 releases)

### 2.2.2 — 2026-07-26

change screenshots

### 2.2.1 — 2026-07-06

- New "Remove Ads" in-app purchase: a one-time purchase removes all banner and interstitial ads. Buy or restore in Settings.
- Added a get-started prompt for new users (solve your first puzzle)
- Clearer campaign streak and locked-stage guidance
- On a failed puzzle, see where you got stuck plus a replay of the robot's path
- Removed the ad at the start of an assessment to keep you in the flow
- Easier controls: clear a slot, highlight the selected slot
- Auto-shows a hint the first time you enter a new stage
- Improved VoiceOver accessibility labels and minor bug fixes

### 2.1.0 — 2026-06-17

- New "Remove Ads" in-app purchase: a one-time purchase removes all banner and interstitial ads. Buy or restore in Settings.
- Added a get-started prompt for new users (solve your first puzzle)
- Clearer campaign streak and locked-stage guidance
- On a failed puzzle, see where you got stuck plus a replay of the robot's path
- Removed the ad at the start of an assessment to keep you in the flow
- Easier controls: clear a slot, highlight the selected slot
- Auto-shows a hint the first time you enter a new stage
- Improved VoiceOver accessibility labels and minor bug fixes

### 2.0.0 — 2026-06-11

RoboTrail 2.0 — All-new design + revamped learning flow

• Fully redesigned: new mascot Bit, metal-white + lime theme, gradient UI
• New tabs: Home · Learn · Assess · Profile
• Learn tab now unifies Command Simulation (108 stages), Code Analysis (sequence trace & bug fix), and Visual Working Memory
• Tap a completed stage to pick any puzzle and replay it
• Cleaner Profile: overall thinking score · precise weakness analysis · weekly goal · medals
• More reliable training (Visual Working Memory / Sequence Trace / Bug Fix)
• Improved English localization and minor bug fixes

### 1.0.4 — 2026-06-06

RoboTrail now speaks English. Switch between English and Korean anytime — from Settings or the new language chip in the header — and the app picks your language automatically on first launch.

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## More apps by woosik choi

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- [모두의 자격증: 자격증 시험 문제풀이](https://appshunter.io/ios/app/id6779944719)

All apps by woosik choi: https://appshunter.io/developer/1845521022

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*