Comparison

Oku vs U4U

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

Head to head
About

Oku

A straightforward meditation timer designed for simplicity. It allows users to set meditation durations and choose a completion sound without distractions from subscriptions, guided sessions, or ads. Focus on your practice with just a press of a button.

Highlights
  • Customizable meditation timer (1-90 minutes)
  • Choice of completion sounds (singing bowl, bell, chime)
  • Ad-free experience
  • No subscriptions required
  • No account needed
  • Simple, distraction-free interface
Features
Read full description

A meditation timer that gets out of your way. No subscriptions. No guided sessions. Just press start and sit. I built Oku because every meditation app I tried wanted me to subscribe, watch a tutorial, or pick from a library of guided sessions. I just wanted to sit down, meditate and track my sessions. So that's what this app does. Set your time anywhere from 1 to 90 minutes with a simple drag gesture. Pick a completion sound you like: singing bowl, soft bell, or warm chime. Press begin. That's the whole app. No subscriptions. No account. No ads.

About

U4U

A positive community for teen girls aged 11-18 to connect, grow, and support each other. Participate in challenges, track well-being, and earn rewards for personal development.

Highlights
  • Join supportive Houses
  • Make friends and connect
  • Complete fun challenges
  • Earn redeemable rewards
  • Track mood and habits
  • Focus on personal growth pillars
Features
Read full description

U4U – Your Space. Your People. Your Growth. U4U is a positive community designed for teen girls ages 11–18 to connect, grow, and support each other. Inside the app, you will join a small group called a House where you meet girls your age and a college mentor who acts like a supportive big sister. Together you can complete fun challenges, share messages, check in on your mood and sleep, and build habits that help you thrive. As you participate, you earn points that can be redeemed for rewards such as gift cards, donations to meaningful causes, and opportunities like scholarships or special events. WHAT YOU CAN DO IN U4U Join a House Be part of a supportive group of girls in your grade. Celebrate achievements, encourage each other, and grow together. Make Friends and Connect Chat with girls in your House and connect with your college House Lead for support and encouragement. You can also meet a Sister Match like a pen pal from another area. Complete Fun Challenges Participate in daily challenges designed to build confidence, positivity, and healthy habits. Earn Rewards Collect points for your activities and redeem them for gift cards, charitable donations, and special opportunities. Track Your Vibe Summary Monitor your mood, sleep, and habits to discover what helps you feel your best. Grow Across Four Pillars U4U focuses on personal growth through four key areas: Strong Self – mental and physical wellbeing Connection – friendships and communication skills Culture – celebrating identity and background Environment – connecting with the world around you A Positive Space for Teen Girls U4U was created to help girls build confidence, form meaningful friendships, and develop habits that support their wellbeing and future. Whether you want to make new friends, stay motivated, track your habits, or simply belong to a supportive community, U4U gives you a place to grow, belong, and shine.

Screenshots

Oku3 screens
U4U4 screens

Verdict

The call

The clearest difference is device support: Oku at 3 against U4U's 1. Oku also leads on iOS requirement (15.1 vs 17.6). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Oku against 5.0 for U4U. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Oku ships an update monthly, U4U every 4 weeks. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
Oku versus U4U: the parameters behind the verdict, then further details
ParameterOkuU4U
PriceFreeFree
Rating5.0 (4 ratings)5.0 (5 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings45 — better
Update frequencyMonthlyEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.6
Further details — not scored
Size31 MB185 MB
Age rating4+12+
DeveloperClarissa WatanabeU4U Inc

Customer experience

Oku

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

U4U

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Oku

No in-app purchases

None

U4U

No in-app purchases

Questions

Is Oku free?
Oku is free to download, with no in-app purchases.
Is U4U free?
U4U is free to download, with no in-app purchases.
Which has better reviews, Oku or U4U?
Oku and U4U are both rated 5.0 out of 5 on the App Store, from 4 and 5 ratings respectively.
Do Oku or U4U have ads?
Neither Oku nor U4U shows ads.
Which is updated more often, Oku or U4U?
Oku ships an update monthly, and U4U every 4 weeks. Most recently, Oku was updated on September 30, 2026 and U4U on October 5, 2026.

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