---
title: "66 Challenge - Reviews, Revenue and Downloads in Spain | Apple App Store"
description: "Transform your life one habit at a time with 66 Challenge - the science-backed app that helps you build lasting habits in just 66 days.  WHY 66 DAYS? Research shows it takes an average of 66 days to f"
---

# 66 Challenge — Spain

![66 Challenge App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/06/72/5b/06725b79-0f0b-b622-399f-b1fc34f79430/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [Moad Ghajjate El Fal](https://apptail.io/developer/moad-ghajjate-el-fal-EHrRBb)
**Category:** Productivity
**Rating:** 5.0/5 (7 ratings)
**Price:** Free
**Bundle ID:** com.the66challenge.app
**Store:** Apple App Store
**Country:** Spain
**Version:** 1.1.1 (released 2026-08-25)
**Original Release:** 2026-02-05
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/es/app/app/id6758270405)
**AppTail Page:** [https://apptail.io/app/66-challenge-SKty/spain](https://apptail.io/app/66-challenge-SKty/spain)

## 66 Challenge Description
Transform your life one habit at a time with 66 Challenge - the science-backed app that helps you build lasting habits in just 66 days.

WHY 66 DAYS?
Research shows it takes an average of 66 days to form a new habit. We've built the perfect system to guide you through every single day.

KEY FEATURES:

- Daily Habit Tracking - Mark your habits complete each day and watch your streak grow

- Progress Visualization - See your 66-day journey unfold with beautiful progress tracking

- Streak Protection - Stay motivated with streak counts and milestone celebrations

- Progress Photos - Capture your transformation with optional daily photos

- Friends & Social Feed - Follow friends, celebrate their wins, and stay accountable together

- Squads - Join or create groups to challenge habits together

- Achievements - Unlock badges as you hit milestones on your journey

- Reminders - Never miss a day with customizable notifications

BECOME UNDENIABLE
Whether you want to exercise daily, read more, meditate, or build any positive habit - 66 Challenge gives you the structure, motivation, and community to make it stick.

Start your 66-day transformation today.

---
Terms of Use: 
Privacy Policy: 

## 66 Challenge Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/96/96/60/969660fe-cc1b-56bb-9bb9-0cff6b0579b0/1.jpg/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/40/80/15/40801552-1305-a684-5857-b951a5584007/3__U00281_U0029.png/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d4/4d/f6/d44df65d-13d1-ae23-1d1e-097f97525e00/4__U00281_U0029.png/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/95/6a/dc/956adcf7-b222-aabf-a8c2-2bd76413ef63/2__U00281_U0029.jpg/1290x2796.png)

## 66 Challenge Rating Breakdown in Spain
- 5 stars: 7 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## 66 Challenge Reviews in Spain

### ***** "One of the best apps I have ever used"
I used to rely on habit-tracking apps like TickTick or Skilltree to stay consistent. At first, they felt motivating and productive. Seeing the streak go up gave me that small dopamine hit that made me feel like I was making progress.

But the problem was the “streak protectors.” Deep down, I knew that even if I skipped a day, I wouldn’t really lose my streak. There was always a safety net. And because of that, I stopped taking my habits seriously. I was technically consistent, but not truly disciplined.

Now it’s different. There’s no protection, no shortcuts, no artificial safety system. If I don’t complete my habits, I lose the streak — simple as that. And that changes everything. It forces real accountability.

Instead of protecting a number, I’m protecting my identity. If I skip, I go back to square one. And honestly, that pressure makes me show up every single day.
-- Sergioelprossssss, 2026-02-20

### ***** "Just what i needed"
Best thing is you can customize your own habits and the reminders really motivate you to keep pushing
-- ceoibrahim, 2026-02-11

### ***** "Game changer"
Its helping me a lot to improve my habits and control my vices.
-- skyyyydr, 2026-02-09

[View all 66 Challenge reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## 66 Challenge In-App Purchases
| Item | Price |
|------|-------|
| Pro Monthly | €4.99 |
| Pro Lifetime | €69.99 |
| Pro Annual | €34.99 |



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## 66 Challenge Available In
- [Spain](https://apptail.io/app/66-challenge-SKty/spain)
- [United States](https://apptail.io/app/66-challenge-SKty/united-states)
- [Italy](https://apptail.io/app/66-challenge-SKty/italy)
- [Netherlands](https://apptail.io/app/66-challenge-SKty/netherlands)
- [Kenya](https://apptail.io/app/66-challenge-SKty/kenya)
- [Israel](https://apptail.io/app/66-challenge-SKty/israel)
- [Czechia](https://apptail.io/app/66-challenge-SKty/czechia)
- [Germany](https://apptail.io/app/66-challenge-SKty/germany)
- [Estonia](https://apptail.io/app/66-challenge-SKty/estonia)
- [Mexico](https://apptail.io/app/66-challenge-SKty/mexico)
- [Bulgaria](https://apptail.io/app/66-challenge-SKty/bulgaria)
- [Uganda](https://apptail.io/app/66-challenge-SKty/uganda)
- [Canada](https://apptail.io/app/66-challenge-SKty/canada)
- [Chile](https://apptail.io/app/66-challenge-SKty/chile)
- [Dominican Republic](https://apptail.io/app/66-challenge-SKty/dominican-republic)
- [Algeria](https://apptail.io/app/66-challenge-SKty/algeria)
- [Ecuador](https://apptail.io/app/66-challenge-SKty/ecuador)
- [Egypt](https://apptail.io/app/66-challenge-SKty/egypt)
- [Grenada](https://apptail.io/app/66-challenge-SKty/grenada)
- [Ghana](https://apptail.io/app/66-challenge-SKty/ghana)
- [Guyana](https://apptail.io/app/66-challenge-SKty/guyana)
- [Croatia](https://apptail.io/app/66-challenge-SKty/croatia)
- [Hungary](https://apptail.io/app/66-challenge-SKty/hungary)
- [Ireland](https://apptail.io/app/66-challenge-SKty/ireland)
- [India](https://apptail.io/app/66-challenge-SKty/india)
- [Iceland](https://apptail.io/app/66-challenge-SKty/iceland)
- [Jamaica](https://apptail.io/app/66-challenge-SKty/jamaica)
- [Jordan](https://apptail.io/app/66-challenge-SKty/jordan)
- [Cambodia](https://apptail.io/app/66-challenge-SKty/cambodia)
- [Cayman Islands](https://apptail.io/app/66-challenge-SKty/cayman-islands)
- [Lebanon](https://apptail.io/app/66-challenge-SKty/lebanon)
- [Sri Lanka](https://apptail.io/app/66-challenge-SKty/sri-lanka)
- [Lithuania](https://apptail.io/app/66-challenge-SKty/lithuania)
- [Luxembourg](https://apptail.io/app/66-challenge-SKty/luxembourg)
- [Latvia](https://apptail.io/app/66-challenge-SKty/latvia)
- [Madagascar](https://apptail.io/app/66-challenge-SKty/madagascar)
- [North Macedonia](https://apptail.io/app/66-challenge-SKty/north-macedonia)
- [Mali](https://apptail.io/app/66-challenge-SKty/mali)
- [Macao SAR China](https://apptail.io/app/66-challenge-SKty/macau)
- [Malta](https://apptail.io/app/66-challenge-SKty/malta)
- [Mauritius](https://apptail.io/app/66-challenge-SKty/mauritius)
- [Namibia](https://apptail.io/app/66-challenge-SKty/namibia)
- [Nigeria](https://apptail.io/app/66-challenge-SKty/nigeria)
- [Nepal](https://apptail.io/app/66-challenge-SKty/nepal)
- [Oman](https://apptail.io/app/66-challenge-SKty/oman)
- [Panama](https://apptail.io/app/66-challenge-SKty/panama)
- [Qatar](https://apptail.io/app/66-challenge-SKty/qatar)
- [Slovakia](https://apptail.io/app/66-challenge-SKty/slovakia)
- [Senegal](https://apptail.io/app/66-challenge-SKty/senegal)
- [Suriname](https://apptail.io/app/66-challenge-SKty/suriname)
- [Tunisia](https://apptail.io/app/66-challenge-SKty/tunisia)
- [Uruguay](https://apptail.io/app/66-challenge-SKty/uruguay)
- [Uzbekistan](https://apptail.io/app/66-challenge-SKty/uzbekistan)
- [British Virgin Islands](https://apptail.io/app/66-challenge-SKty/british-virgin-islands)
- [Armenia](https://apptail.io/app/66-challenge-SKty/armenia)
- [South Africa](https://apptail.io/app/66-challenge-SKty/south-africa)
- [Angola](https://apptail.io/app/66-challenge-SKty/angola)
- [Austria](https://apptail.io/app/66-challenge-SKty/austria)
- [Azerbaijan](https://apptail.io/app/66-challenge-SKty/azerbaijan)
- [Barbados](https://apptail.io/app/66-challenge-SKty/barbados)
- [Belgium](https://apptail.io/app/66-challenge-SKty/belgium)
- [Bahrain](https://apptail.io/app/66-challenge-SKty/bahrain)
- [Bermuda](https://apptail.io/app/66-challenge-SKty/bermuda)
- [Brunei](https://apptail.io/app/66-challenge-SKty/brunei)
- [Bolivia](https://apptail.io/app/66-challenge-SKty/bolivia)
- [Botswana](https://apptail.io/app/66-challenge-SKty/botswana)
- [Belize](https://apptail.io/app/66-challenge-SKty/belize)

---

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