Comparison

Monologue vs Challenge21

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

Head to head
About

Monologue

A minimalist journaling app for private reflection. It offers secure cloud synchronization, powerful search, and versatile data export options to preserve your thoughts and memories across devices.

Highlights
  • Minimalist writing interface
  • iCloud data synchronization
  • Text search functionality
  • Multiple data export formats (txt, md, pdf, json)
  • Touch ID/Face ID privacy protection
  • Image export of text
  • Customizable font settings
Features
Read full description

A private space for your thoughts, in words and in your own voice. Monologue keeps the focus on personal expression. Save the small moments, passing ideas and feelings you would rather keep to yourself. Write when a thought arrives, or record the voice and emotion behind it. Come back later to read or listen again. FEATURES [Write and search] Create and edit personal notes. Search the text of all your written records to find a thought you remember. [Archive and revisit] Browse notes by year and month, see record counts, search within a month and filter with the calendar. Sort from newest to oldest or the other way around. [Export and import notes] Export a date range as TXT, Markdown, PDF or JSON. JSON note backups exported by the current version can be imported again. Review a validated preview before importing; duplicate records are skipped and existing notes are not overwritten. [Voice recording] Record, pause, resume and listen before saving. Edit your recording’s title. During playback, view the waveform, seek to a moment, skip 15 seconds forward or back, and choose speeds from 0.5x to 2x. Recording pauses when you leave the app. [Organize and export audio] Browse recent recordings by date, archive by year and month, search titles and filter dates. Export one recording, a selection or your entire library as M4A files, or a ZIP organized by year and month, for safekeeping or sharing. [Home Screen and Lock Screen widgets] Rediscover a random note from your past. Choose medium or large Home Screen widgets, or a rectangular Lock Screen excerpt. Switch to another note on the Home Screen and tap the text to open the original. [iCloud note sync — membership] Sync written records between devices using the same Apple Account. Restore notes already synced to iCloud after changing phones or reinstalling the app. [Face ID / Touch ID app lock — membership] Require the biometric authentication supported by your device to enter the app and access your notes and recordings. [Notes as images] Turn written records into images and save them to Photos, ready to keep or share. [Your reading preferences] Choose from built-in fonts, adjust the number of preview lines in the list and follow the system's light or dark appearance. [Batch management] Touch and hold a record or use the More menu to select and delete multiple notes or recordings. When iCloud note sync is enabled, deleting notes also syncs those deletions to iCloud. Check your selection before deleting. MEMBERSHIP iCloud note sync and the Face ID / Touch ID app lock require a one-time in-app purchase. There is no automatic renewal. DATA AND PRIVACY Voice recording is enabled by default. Hide its tab in Settings; saved recordings remain available when you turn it back on. Audio is stored only on this device. It is not synced with iCloud or included in system device backups. Export important recordings yourself; deleting the app deletes local audio. JSON backup and import are for written notes. Exported audio is for safekeeping and playback outside the app; audio reimport is not currently supported. Widgets display random past notes on the Home Screen or Lock Screen. The app lock does not hide widget text. If your notes contain text you do not want others to see, do not add widgets, or remove those already added. A world of your own. Words for yourself, and a voice you can return to.

About

Challenge21

Read full description

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

Monologue4 screens

Verdict

The call

The clearest difference is in-app purchases: Challenge21 at none against Monologue's 1. Challenge21 also leads on iOS requirement (15.1 vs 26.0). On price 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. Monologue sells 1 one-off in-app purchase. Challenge21 asks for nothing beyond the download.

Scorecard2 real differences · 6 level
Monologue versus Challenge21: the parameters behind the verdict, then further details
ParameterMonologueChallenge21
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 2 months—
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone — better—
Requires iOS26.015.1 — better
Further details — not scored
Size29 MB31 MB
Age rating4+4+
Developer书旗 莫Astra Zenith Ltd.

In-app purchases

1 purchases

Monologue

One-time1
  • VIP$1.99
None

Challenge21

No in-app purchases

Questions

Is Monologue free?
Monologue is free to download, with in-app purchases available.
Is Challenge21 free?
Challenge21 is free to download, with no in-app purchases.

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