Comparison

No vs Red Days

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

Head to head
About

No

Features
Read full description

Reduce sugar, stay on track, and see your progress. No Sugar Challenge helps you understand your habits, limit added sugar, and stay motivated day after day. Whether you want to quit completely, cut back on sweets, start a detox, or simply become more aware of your choices, the app gives you clear tracking and practical tools to move forward. Join the viral #NoSugarChallenge trend on TikTok, Facebook, Instagram, and more. Take the first step toward better health at your own pace. Start your no-sugar challenge Choose a 7-, 14-, or 30-day challenge, set your daily sugar limit, and build a lasting habit without unnecessary pressure. Track your progress every day Mark the days you ate sugar with a single tap. See your successful days, slip-ups, current streak, and history in a clean, easy-to-read calendar. Log your sugar intake and cravings Record your sugar intake, identify the moments when you give in, and celebrate the cravings you resist. Follow your trends to see how your consumption changes over time. Stay motivated with badges and milestones Complete challenges, unlock achievements, follow your journey, and keep a record of your small wins. Every day counts, even when it is not perfect. Learn to spot hidden sugar Follow the educational journey β€œVoyage to the Land of Sugar” to learn about added sugar, health recommendations, food labels, cravings, alternatives, and common traps such as cereals, fruit juices, snacks, and light products. Use practical tools every day The app includes several helpful tools: β€’ Sugar converter into cubes and calories β€’ Sugar calculator by portion size β€’ Guide to reading food labels β€’ Hidden sugar glossary β€’ Anti-craving tips β€’ Breathing and mindfulness exercises β€’ Fasting and hydration tracking Observe the benefits for your body Track your weight, energy, sleep, appetite, skin, teeth, and other useful signals. See what actually changes for you instead of relying on a simple counter. Simple, private, and distraction-free No mandatory account. No ads. No distractions. The app works 100% offline, so you can stay focused on your goal wherever you are. Start today Reducing sugar becomes easier when you know what to track, what to understand, and what to do at the right moment. No Sugar Challenge gives you the guidance to move forward one day at a time.

About

Red Days

Features
Read full description

Red Days is a private, offline menstrual cycle tracker designed to give you complete control over your health data. Track your period, predict your next cycle, log daily symptoms, moods, and health metrics β€” all without an internet connection. Your data never leaves your device. Features: β€’ Period tracking with cycle predictions and fertile window estimates β€’ Daily health logging: flow level, symptoms, moods, temperature, weight, sleep, water intake, medications, and intimacy β€’ Visual calendar with color-coded cycle phases β€’ Cycle phase education with nutrition, exercise, and emotional wellness tips β€’ Statistics dashboard with cycle length trends, symptom frequency, and weight/sleep charts β€’ Compare up to 3 cycles side by side β€’ Cycle irregularity detection and alerts β€’ Spotting classification (period start, mid-cycle, or pre-period) β€’ Custom symptom tracking β€’ PDF health report generation for sharing with your doctor β€’ Data export (JSON/CSV) and import for backups β€’ App lock with Face ID and PIN protection β€’ Light, dark, and system theme modes β€’ Fully localized in 10 languages Your privacy matters. Red Days stores everything locally on your device. No accounts, no cloud, no tracking, no ads.

Screenshots

No4 screens
Red Days4 screens

Verdict

The call

The clearest difference is in-app purchases: Red Days at none against No's 1. No's advantage is iOS requirement (18.4 vs 26.2). 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

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

Both are free to download. No sells 1 one-off in-app purchase. Red Days asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
No versus Red Days: the parameters behind the verdict, then further details
ParameterNoRed Days
PriceFreeFree
Update frequencyEvery 10 daysβ€”
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.4 β€” better26.2
Further details β€” not scored
Size211 MB5 MB
Age rating12+4+
DeveloperMathieu DE BRITOAnthony Castor

In-app purchases

1 purchases

No

One-time1
  • Premium lifetime unlock$8.99
None

Red Days

No in-app purchases

Questions

Is No free?
No is free to download, with in-app purchases available.
Is Red Days free?
Red Days is free to download, with no in-app purchases.
Do No or Red Days have ads?
Neither No nor Red Days shows ads.

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