Oku vs U4U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Join supportive Houses
- Make friends and connect
- Complete fun challenges
- Earn redeemable rewards
- Track mood and habits
- Focus on personal growth pillars
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Oku ships an update monthly, U4U every 4 weeks. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.
| Parameter | Oku | U4U |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (5 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 5 — better |
| Update frequency | Monthly | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 31 MB | 185 MB |
| Age rating | 4+ | 12+ |
| Developer | Clarissa Watanabe | U4U Inc |
Customer experience
Oku
U4U
In-app purchases
Oku
No in-app purchases
U4U
No in-app purchases









