Antodo vs Challenge21
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Antodo
This app helps you stay organized and motivated by breaking down tasks into manageable steps. Earn rewards for completing to-dos and discover the lives of ant characters as you progress. It's designed to encourage consistent effort, even for small tasks.
- Task management
- Daily planning
- Gamified rewards (star candies)
- Character collection
- Motivation for lazy users
- Small task tracking
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Antodo, a reliable helper who will help the lazy person with determination! #Lazy #You can do it too #Stop trying for 3 days #1 star candy a day From sorting waste to going to the bank. Write down what you have to do, even if it's a small task, and put it into practice. “What to do? I’ll destroy everything..!!!” If you do everything you need to do, you get a sweet star candy. If you consistently collect star candies, you can meet various ant friends and get a glimpse into their daily lives. Sounds fun, right? :) An exploration of the ant life of those of us who want to live hard like ants!
Challenge21
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你是否曾經下定決心要改變,卻在幾天後就放棄了? Challenge21 以「21天習慣養成」科學原則為核心,幫助你建立持久的好習慣。透過每日打卡、視覺化進度與遊戲化激勵,讓改變不再是負擔,而是每天期待的成就感。 【核心功能】 四種習慣類型 • 打卡型:閱讀、早起、冥想等簡單每日習慣 • 計時型:設定目標時長,專注完成(支援背景計時) • 喝水型:設定每日目標毫升數,分次記錄 • 運動型:記錄有氧距離與重訓組數 21天視覺化進度 • 熱力圖格子追蹤每日完成狀況 • 週柱狀圖呈現本週表現趨勢 • 連續天數、完成率等詳細統計 成就與升級系統 • 累積經驗值(XP)、解鎖等級 • 5 個里程碑成就:7天連續、21天達成等 • 完成挑戰後自動生成總結報告 個人化設定 • 自由選擇習慣 Emoji 與顏色標籤 • 6 個預設習慣範本快速開始 • 暗色 / 亮色主題自由切換 • 繁體中文 / 英文介面 完全本機儲存 • 所有資料儲存在你的裝置上,無需帳號,保護隱私 【適合你的情境】 • 想培養閱讀習慣 • 想堅持每天運動 • 想戒掉拖延,建立早起習慣 • 想每天喝足夠的水 • 任何你想在 21 天內養成的目標 打開 Challenge21,今天就開始你的第一個挑戰。
Screenshots
Verdict
The clearest difference is in-app purchases: Challenge21 at none against Antodo's 4. Antodo's advantage is device support. On price and iOS requirement 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. Antodo sells 4 one-off in-app purchases. Challenge21 asks for nothing beyond the download.
| Parameter | Antodo | Challenge21 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (7 ratings) — better | — |
| Positive reviews | 96.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | — |
| Ads | Yes | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod — better | — |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 91 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | seungmin lee | Astra Zenith Ltd. |
In-app purchases
Antodo
- 25 candies$0.99
- 55 candies$1.99
- 90 candies$2.99
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- Pro$3.99
Challenge21
No in-app purchases









