Comparison

SereniTeen vs Slay 75

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

Head to head
About

SereniTeen

Features
Read full description

SereniTeen: Your Ultimate Teen Companion Are you navigating the ups and downs of teenage life? SereniTeen is here to help! Designed exclusively for teens, SereniTeen is your safe space to grow, learn, and thrive. Key Features: • Mood Tracking: Log daily emotions to recognize patterns and better understand your mental well-being. • Habits: Set and track personal goals to build healthy routines and positive behaviors. • Challenges: Compete with friends in daily, weekday, or weekend challenges to stay motivated and accountable. • Bragbook & Journal: Celebrate wins, reflect on experiences, and document personal growth in a private space. • Leaderboard: See how you rank among friends in challenges, adding fun and motivation to self-improvement. Why SereniTeen? Life as a teen can be overwhelming, but you’re never alone. SereniTeen is like having a trusted friend and mentor right in your pocket. Empower yourself to handle challenges, celebrate your victories, and embrace your unique journey. Download SereniTeen now and take the first step towards a happier, healthier YOU! SereniTeen: Because growing up doesn’t have to be so tough.

About

Slay 75

This app helps you build discipline and consistency through a 75-day wellness challenge. Track daily habits, view progress, and access motivational affirmations and breathing exercises to support your self-improvement journey.

Highlights
  • Daily habit checklist
  • Progress tracking (streak, score)
  • Motivational affirmations
  • Guided breathing exercises
  • Clean habit tracker interface
  • Profile and account management
Features
Read full description

Become the girl and slay. Slay 75 is built for staying consistent, celebrating discipline, and keeping your daily habits in one clean place. Track your challenge, check off your daily goals, view your progress, reset your mindset with affirmations, and take a quick breathing break when you need it. ▶ Your daily Slay checklist Check off your core challenge goals each day: → Eat clean → Drink clean → Walk 10,000 steps → Complete a 45-minute workout → Read 10+ pages or listen to a 15+ minute podcast ▶ Track your progress See your challenge day, discipline score, streak, and goal completion rates from your profile. Slay 75 keeps it simple so you can see how consistent you have actually been. ▶ Affirmations when you need a reset Swipe through affirmations for motivation, confidence, calm, and getting back into the right mindset. ▶ Breathing exercises Use the guided breathing tab to slow down, reset, and lock back in. ▶ Your profile Add your name and bio, view your progress, and manage your account from settings. ▶ Perfect for: → Girls doing a 75-day challenge → Anyone trying to build discipline → People who want a clean habit tracker → Fitness, wellness, and self-improvement routines → Staying consistent without overcomplicating everything → Romanticizing your reset era ▶ Getting started is easy: ① Download Slay 75 ② Enter your name ③ Start your 75-day challenge ④ Check off your goals each day ⑤ Track your streak, discipline, and progress ⑥ Use affirmations and breathing when you need a reset Slay 75 is for building the routine, keeping the promise to yourself, and becoming that girl one day at a time. #Slay75 #75DayChallenge #Wellness #FitnessTracker #HabitTracker #SelfImprovement #Discipline #ThatGirl #Routine #Motivation #Affirmations #Breathing Privacy Policy: https://slay75.com/privacy Terms of Service: https://slay75.com/terms

Screenshots

SereniTeen4 screens
Slay 754 screens

Verdict

The call

The clearest difference is in-app purchases: SereniTeen at none against Slay 75's 10. SereniTeen also leads on ads (none vs shown). Slay 75's advantage is update cadence (every 5 days vs every 4 weeks) and chart position (#129 vs unranked). On price, device support and iOS requirement 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. Slay 75 sells 10 in-app purchases, starting at $8.99 per 7 days. SereniTeen asks for nothing beyond the download.

UpkeepUpdate frequency

SereniTeen ships an update every 4 weeks, Slay 75 every 5 days. The most recent releases landed on November 8, 2026 and November 11, 2026 respectively.

Scorecard4 real differences · 7 level
SereniTeen versus Slay 75: the parameters behind the verdict, then further details
ParameterSereniTeenSlay 75
PriceFreeFree
Rating—4.8 (7K ratings) — better
Positive reviews—43.6% of reviews
Number of ratings—7K — better
Update frequencyEvery 4 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
Best chart rank—#129 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size107 MB27 MB
Age rating4+4+
DeveloperSiaNTech LTDBETTER BOUND LLC

In-app purchases

None

SereniTeen

No in-app purchases

10 purchases

Slay 75

Subscriptions9
  • Slay 75 (Full Access)$8.997 Days
  • Slay 75 (Full Access)$9.991 Year
  • Slay 75 (Full Access)1 Month trial$12.991 Month
Show 6 more
  • Slay 75 (Full Access)$12.991 Month
  • Slay 75 (Full Access)$19.991 Year
  • Slay 75 (Full Access)$29.991 Year
  • Slay 75 (Full Access)$34.991 Year
  • Slay 75 (Full Access)$39.991 Year
  • Slay 75 (Full Access)$49.991 Year
One-time1
  • Slay 75 (Full Access)$79.99

Questions

Is SereniTeen free?
SereniTeen is free to download, with no in-app purchases.
Is Slay 75 free?
Slay 75 is free to download, with in-app purchases available.
Do SereniTeen or Slay 75 have ads?
Slay 75 shows ads; SereniTeen does not.
Which is updated more often, SereniTeen or Slay 75?
SereniTeen ships an update every 4 weeks, and Slay 75 every 5 days. Most recently, SereniTeen was updated on November 8, 2026 and Slay 75 on November 11, 2026.

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