Comparison

Sunflower vs Red PDF Reader

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

Head to head
About

Sunflower

Features
Read full description

Sunflower Pomodoro Focus is a timer for students, professionals, and anyone seeking distraction-free focus. Kickstart deep-work sessions with a simple, customizable timer and soothing focus sounds. No subscriptions or in-app purchases, ever! Sunflower provides a calm, supportive environment with an ADHD-friendly design. Its clean, minimal interface and dark mode help reduce glare and keep distractions at bay. Build better focus habits with Sunflower, a clean and calming Pomodoro focus app designed for deep work, studying, and everyday productivity, without distractions or hidden costs. Sunflower uses the Pomodoro technique to help you break work into manageable focus sessions, followed by restorative breaks. Thoughtfully designed for students, professionals, and ADHD-friendly routines, Sunflower helps you stay focused while avoiding burnout. - Customizable Pomodoro Timer: Set custom work and break durations with an easy-swipe timer. - Focus Sessions & Streaks: Build momentum with consecutive Pomodoro sessions. Set daily focus goals and watch your streak grow. - Break Reminders: Gentle alerts prompt you to take short and long breaks, keeping focus sustainable and preventing burnout. - Stats & Tracking: See your time tracked with insightful charts and daily/weekly stats. - Ambient Focus Sounds: Choose calming background sounds (nature, white noise, etc.) to help maintain concentration. - Offline Mode: No internet required, use Sunflower anywhere, anytime, without distractions. - Dark Mode: Eye-friendly interface with a dark theme reduces glare and eye strain. Sunflower’s science-based design motivates you to stay focused and get things done, while ensuring you work with time and not against it, to avoid burnout.

About

Red PDF Reader

Features
Read full description

Red PDF Reader A clean, distraction-free PDF reader designed for people who actually read. Open any PDF from your Files app and pick up exactly where you left off β€” Red PDF Reader remembers your last page automatically and syncs it across all your devices via iCloud. Switch from your iPhone to your iPad and continue reading without missing a beat. Features: Continuous reading β€” smooth, vertical scroll layout optimized for long documents Auto-resume β€” your last page is saved automatically and synced across devices Recent files β€” quickly jump back to any of your last 50 documents Page thumbnails β€” visual panel for fast navigation through any document Go to page β€” jump directly to any page with a single tap Page indicator β€” always know where you are with a subtle page counter overlay No sign-in required. No subscriptions. No ads. Just your PDFs, exactly where you left them.

Screenshots

Sunflower4 screens
Red PDF Reader4 screens

Verdict

The call

The clearest difference is update cadence: Red PDF Reader at every 3 months against Sunflower's every 11 months. Sunflower's advantage is iOS requirement (13.0 vs 18). On price, ads, in-app purchases 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sunflower ships an update every 11 months, Red PDF Reader every 3 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences Β· 4 level
Sunflower versus Red PDF Reader: the parameters behind the verdict, then further details
ParameterSunflowerRed PDF Reader
PriceFreeFree
Update frequencyEvery 11 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS13.0 β€” better18
Further details β€” not scored
Size44 MB4 MB
Age rating4+4+
DeveloperFirefly TechKhurshed Gulov

In-app purchases

None

Sunflower

No in-app purchases

None

Red PDF Reader

No in-app purchases

Questions

Is Sunflower free?
Sunflower is free to download, with no in-app purchases.
Is Red PDF Reader free?
Red PDF Reader is free to download, with no in-app purchases.
Do Sunflower or Red PDF Reader have ads?
Neither Sunflower nor Red PDF Reader shows ads.
Which is updated more often, Sunflower or Red PDF Reader?
Sunflower ships an update every 11 months, and Red PDF Reader every 3 months. Most recently, Sunflower was updated on October 24, 2026 and Red PDF Reader on October 28, 2026.

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