wow | واو vs The 21 Days Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
wow | واو
Discover the best deals on flights and hotel bookings. Compare products from popular online stores to find the lowest prices. Enjoy easy searching and booking for your next trip.
- Best flight prices
- Hotel booking
- Product price comparison
- Online store comparison
- Easy search and booking
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رحلتك تبدأ من هنا ! تطبيق يقدم لك أفضل العروض و أفضل أسعار الطيران و حجز الفنادق ، و المقارنة بين المنتجات و الحصول على أفضل سعر بين المتاجر الإلكترونية الشهيرة ، نتميز بسهولة البحث و الحجز
The 21 Days Challenge
Build life-changing habits with guided 21-day challenges. Track progress, journal your thoughts, and customize your avatar with earned points. Improve your mental well-being and create a happier lifestyle.
- Guided 21-day habit challenges
- Daily journaling and mood tracking
- Avatar customization with earned points
- Community feed for gratitude sharing
- Positive affirmations and wallpapers
- Daily task completion tracking
- Customizable daily reminders
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Create your ideal life with life changing habits. It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day. Starting a healthy lifestyle, taking a break away from the internet, practicing gratitude, trying to be more productive, simple practices to find happiness and calm in your life, how to study effectively for all the students, ways to spread kindness and positivity, tips for fixing your sleeping schedule and daily positive affirmations are some of the challenges that you can find in the app. Once you complete your daily task, you can mark as completed and collect the points (to customize your avatar). This way, you can use this app like a habit tracker. In the gratitude challenge, you can write your thoughts and share them in the feed (you can leave anonymously too). Here you're going to see all the community answers and you can also give it a like on your favorite ones. Complete tasks on your profile and do daily challenges to collect points so you can buy items for your own avatar like different hairstyles, eyes and mouth shapes and clothes. Create a healthier and happier mind with journaling. With this app you can daily journal and choose your daily mood. Then you can track your mood in the calendar and see all your previous records. You also a have a selection of positive wallpapers for your phone. Enable notifications and choose the time to be notified to remind you to do the challenge every day. Don’t forget to take care of your body and mind. It's the only place you have to live. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: wow | واو at none against The 21 Days Challenge's 2. wow | واو also leads on ads (none vs shown) and iOS requirement (10.1 vs 15.0). The 21 Days Challenge's advantage is rating (4.7 vs 4.4) and ratings volume (575 vs 32). On price, review sentiment, update cadence and device support 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. The 21 Days Challenge sells 2 in-app purchases, starting at $2.99 per month. wow | واو asks for nothing beyond the download.
The 21 Days Challenge holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: The 21 Days Challenge has 575 ratings behind it against 32, so its average is the more settled of the two. Written reviews complicate that: 100% of wow | واو's written reviews are positive against 92% of The 21 Days Challenge's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 4 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | wow | واو | The 21 Days Challenge |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (32 ratings) | 4.7 (575 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 92.1% of reviews |
| Number of ratings | 32 | 575 — better |
| Update frequency | Every 4 weeks | Every 4 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 153 MB | 128 MB |
| Age rating | 4+ | 4+ |
| Developer | Fahad Alshudukhi | Kati Pereira |
Customer experience
wow | واو
The 21 Days Challenge
Bugs and requests
wow | واو
Not enough reviews yet to summarise bugs or requests.
The 21 Days Challenge
Reported bugs
2 issues- Sharing created challenges does not work as expected
- Challenges sometimes disappear from the app
Requested features
4 requests- Add a search function for community challenges
- Allow users to save and revisit their own created challenges
- Provide more customization options for the app and user profile
- Introduce a widget for easier access to daily tasks
In-app purchases
wow | واو
No in-app purchases
The 21 Days Challenge
- Remove ads month$2.991 Month
- Remove Ads Year3 Days trial$24.991 Year
