Arc Journal vs One Line
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Arc Journal
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Arc is your personal journal to keep the memories that matter. It helps you remember your life as itβs lived, one moment at a time. SIMPLE, MINIMAL & BEAUTIFUL A clean, distraction-free interface designed for daily reflection. Open the app, start writing, and let your thoughts flow. PERFECT FOR Documenting your life and capturing those little moments that make you smile. FEATURES - Write and save personal journal entries - Tag your entries with emotions - Add photos and videos to your entries - Calendar to see entries across the year - Beautiful, minimal design - Date-organised entries - A map view to see where your entries are from
One Line
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One Line is the ultimate minimalist journal designed to help you capture your life, one day and one sentence at a time. No pressure to write pagesβjust log your mood and write one single line to reflect on your day. Build a lasting mindfulness habit, look back on your favorite memories, and understand your emotions with advanced AI-powered insights. FEATURES: β’ One Line a Day: Journaling made simple. Write one sentence to capture the essence of your day. β’ Mood & Emotion Tracker: Select your daily feeling and watch your emotional trends over time. β’ AI Sentiment Reports: Unlock deep weekly, monthly, and yearly reports analyzing your emotional trajectory. β’ Streak Saver: Forgot yesterday? Log retroactively to keep your daily writing streak alive. β’ Memory Lane: Instantly revisit random memories from your past. β’ Beautiful Share Themes: Share your mood grids on Instagram Stories with premium templates like Polaroid, Cyberpunk, Aura, and Editorial. β’ Calendar & Fast Search: Search your history easily or browse entries month-by-month. PREMIUM FEATURES: β’ iCloud Sync: Securely sync your journal across iPhone, iPad, and Mac. β’ Face ID / Touch ID: Keep your private thoughts secure from prying eyes. β’ Export PDF: Convert your entire journal into a beautifully formatted digital book. β’ Advanced Statistics: Deep-dive into monthly and yearly mood curves and time preferences. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Arc Journal at none against One Line's 3. Arc Journal also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. One Line sells 3 in-app purchases, starting at $0.99 per month. Arc Journal asks for nothing beyond the download.
Arc Journal ships an update weekly, One Line every 2 months. Both last shipped on November 5, 2026.
| Parameter | Arc Journal | One Line |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly β better | Every 2 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 47 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Phillip Pham | ismail kirenli |
In-app purchases
Arc Journal
No in-app purchases
One Line
- OneLine Pro Monthly$0.991 Month
- OneLine Pro Yearly7 Days trial$6.991 Year
- One Line Premium$12.99









