# Whiteboardy

> Whiteboardy (iPhone/iPad app by Po Jen Ko.)

- Source: https://appshunter.io/ios/app/whiteboardy/id6795752114 (this page in markdown: same URL + `.md`)
- Developer: [Po Jen Ko](https://appshunter.io/developer/6786138005)
- Category: Education, Developer Tools
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: American English, Chinese (Traditional, Taiwan)
- Released: 2026-08-27
- Data updated: 2026-10-10
- User reviews in markdown: https://appshunter.io/ios/app/whiteboardy/id6795752114/reviews.md

## What is Whiteboardy?

Whiteboardy 把演算法練習帶進通勤、排隊與日常零碎時間。你不必在手機上寫完整程式碼，只要用自己的話描述資料結構、解題步驟與複雜度，就能檢查思路並獲得下一步提示。

主要功能：

• 每日挑戰：每天一題，持續建立解題習慣
• 思路判定：針對核心概念提供回饋，不直接揭露完整答案
• 起手提示：卡住時逐步取得方向
• 演算法學習地圖：從時間與空間複雜度開始建立基礎
• 210 題題庫：依題型與難度探索練習
• 學習進度：記錄完成題目與連續練習天數
• 作答紀錄與錯題收藏：方便回顧與再次挑戰

免費方案每天提供一題挑戰。Plus 與 Coach 方案可解鎖完整題庫、更多每日思路判定次數與進階學習功能。

Whiteboardy 重視的是你如何思考，而不只是最後寫出的程式碼。先把方法想清楚，再回到電腦完成實作。
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 15 Extra Judgments | $1.99 | one-time |
| 35 Extra Judgments | $2.99 | one-time |
| 65 Extra Judgments | $4.99 | one-time |



## Version history (last 2 releases)

### 1.1.0 — 2026-09-05

這次更新，讓解題更順手、回饋更清楚。

• 重新整理題目版面，清楚區分題意、解題要求與範例。
• 答對後顯示專屬完成頁，方便繼續下一題。
• 改善回答輸入、鍵盤收合與頁面操作體驗。
• 新增英文介面與英文題目，可在設定中切換語言。
• 統一中英文介面的橘色，修正英文模式顏色偏暗的問題。
• 改善 AI 判定與提示，協助找出解法中的關鍵問題。
• 新增 15、35、65 次額外判定選購，每日額度用完後可接續使用。
• 改善加購次數入帳與網路中斷後的重試機制。
• 修正部分題目範例與介面顯示問題。

### 1.0 — 2026-08-28

No release notes.

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## More apps by Po Jen Ko

- [GainLens](https://appshunter.io/ios/app/gainlens/id6786138003)

All apps by Po Jen Ko: https://appshunter.io/developer/6786138005

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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 2026-10-10.*