90daysChallenge vs Jo一個T9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
90daysChallenge
This app helps you build lasting habits and improve focus through a structured 90-day challenge. It offers dedicated focus modes for deep work and quick sprints, along with daily reminders and motivational quotes to keep you on track.
- 90-Day Challenge Tracker
- Deep Focus Mode
- Sprint Mode
- Daily Reminders
- Daily Motivation Quotes
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Focus 90 is your dedicated focus training companion, designed to help you build habits that stick. Key Features: 90-Day Challenge Tracker – Visualize your progress and stay on course. Deep Focus Mode – Achieve peak productivity with 90-minute immersive sessions. Sprint Mode – Perfect for a quick 2-minute burst of concentration. Daily Reminders – Personalized alerts to ensure you never miss a day. Daily Motivation – 100 inspiring bilingual (English & Chinese) quotes from legendary athletes. Start your 90-day focus journey today. Master your concentration and achieve your goals!
Jo一個T9
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Jo一個T9注音:把注音放進九個鍵,單手也能快速打中文。 懷念傳統手機的九宮格打字嗎?Jo一個T9注音把 37 個注音符號分配到九宮格上,不用精準點到小小的按鍵,按大格子就能打字,特別適合單手操作、手指比較粗,或是家中長輩使用。 【主要特色】 ● 長句一次打到位 連續輸入多個字的注音,鍵盤會自動斷詞組句。聲調鍵讓選字更精準。 ● 候選字一鍵展開 點 ▼ 展開完整候選清單,多字詞也會完整顯示,不會被截斷。 ● 長按原地左右滑 長按注音鍵,手指在原地左右滑,就能指定要打的那一個注音;長按「。」選標點,長按聲調鍵換聲調。 ● 打錯也找得到 「臨近鍵容錯」會把按到旁邊的鍵、少按一個鍵的情況一起列入候選(可在設定中關閉)。 ● 越用越懂你 常選的字詞會自動排到前面,並根據上一個詞建議下一個詞。學習紀錄只存在你的裝置上,可匯出備份或用 iCloud 同步。 ● 可接自己的 AI 聯想(選用) 支援 OpenAI 相容 API,填入你自己的 API Key,選字後就會出現 AI 建議的下一句。預設關閉,資料直接從你的手機送到你選的服務。 ● 英文、數字、符號、表情符號 空格鍵長按切換英文鍵盤,123 鍵切換數字符號,長按 123 打表情符號。 【完全免費・重視隱私】 沒有廣告、沒有內購、沒有帳號。開發者不收集任何資料,你打的字不會傳給我們。 【啟用方式】 1. 打開「設定 → 一般 → 鍵盤 → 鍵盤」 2. 新增鍵盤,選擇「Jo一個T9注音」 3. 點進該鍵盤,開啟「允許完整取用」(用於共用學習紀錄;選用的 AI 聯想與 iCloud 備份也需要) 4. 在任何 App 中切換到此鍵盤開始使用 詞庫採用 libchewing(新酷音)開源詞庫。
Screenshots
Verdict
The clearest difference is update cadence: Jo一個T9 at weekly against 90daysChallenge's every 3 weeks. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
90daysChallenge ships an update every 3 weeks, Jo一個T9 weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | 90daysChallenge | Jo一個T9 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 10 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | HSIN JUI YU | YEN YU LIN |
In-app purchases
90daysChallenge
No in-app purchases
Jo一個T9
No in-app purchases








