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21 Days Effect

21Days Effect App helps you to start new good habit and get rid of bad habits.
To become successful you need to learn how to develop and maintain good habits. It takes discipline, courage and hard work to keep those habits in place. Habit formation involves establishing a plan and creating steps to help you achieve what once was just a dream. The “21 days to form a habit idea” comes from a 1960 self-help book by cosmetic surgeon Dr. Maxwell Maltz, called “Psycho Cybernetics, A New Way to Get More Living Out of Life”. Repeating some everyday behavior for 21 days will get you to the point where this behavior becomes your habit. 21Days Effect App will help you to:


* define your challenge
- pick a habit you want to form or get rid of
* track your progress
- every day you will be asked to update the progress of your challenge
* reminders
- 21Days Effect App will remember to remind you every day about your challenges
* share the progress of your challenge with your friends on Facebook

Category : Lifestyle

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Reviews (27)

Max. H. Aug 14, 2019     

Easy to use. The only issue so far is when a task has been achieved for the day, that task doesn't always turn green in the Active column. And for myself, I'd prefer the re-challenges (blue) to stay where they were within the Active list instead of being sent to the bottom.

Dan. B. Oct 23, 2019     

I really like this app. It's simple to use, straight forward. It almost pains me to have to choose the frowny face on the day I don't succeed at the challenge I've set for myself. The only thing I don't like about the app is that the challenge ceases on just one day of defeat. Come on! Whatever happened to three strikes and THEN you're out, lol!

Ali. M. Mar 20, 2021     

I've loved this app! I get intimidated by challenge apps and incredibly long goals. If I fail, I'm liable to not try again. This app is easy to use and is just the right amount of push while being attainable. Sadly, I haven't been able to open the app in a few days, and I haven't been able to figure out what's wrong with it.

Zak. A. B. Jan 3, 2019     

I think it's a good idea to make that kind of apps. But without receiving notifications it's useless, I don't receive notifications I even checked that is allowed twice but nthing happened so.........

Mar. A. A. Mar 9, 2019     

The app is great. One suggestion here, I hope users can set a specific time for each goal that way, we can remind ourselves. 😊 I hope this feature will be included once a new update is available.

ary. r. Nov 28, 2020     

earlier i used to get notifications,but now i dont ,i set the time and notification sound and all,but still can't get ,i checked my phone settings,tried reinstalling the app, but same thing happened. so i think its some bug , please check..

J.V. T. Mar 3, 2021     

I have had the app a long time. It has helped me tremendously. Now it keeps crashing and doesn't open at all. after 3 years please help or is there another app anyone could recommend?

rak. b. k. Aug 11, 2019     

one of the best habit builder I have used so far. The interface is kinda very simple, but the features are great.

Kun. P. Apr 29, 2021     

I am giving this rating on the basis of earlier I used and deduct two stars jut because of below issue but now suddenly this app stopped working and it's not getting open might be it's a bug please solve the problem.

Ali. H. Mar 9, 2021     

i absolutely love this app. it is very easy to use. just what i needed. the problem is it stopped working a week ago. i reinstalled it but sadly it still doesn't work

Smr. R. J. Mar 20, 2021     

The app is helpful in the past but by the last 1 week the app is crusing continuously unable to open the app so my all streaks are gone. Iam uninstall it.

Bea. M. Oct 7, 2019     

No way to reset a challenge. If you miss a day it simply archives your challenge. Not helpful.

Ays. P. Jun 9, 2019     

I hope there is a dark mode and we can adjust the font size. But overall, it is a good app. 👍

A.R. M. Dec 11, 2018     

Very disappointed I had my goals especially for quitting smoking cold turkey my some deleted the app to download a game I was furious because my daughter wanted me to quit smoking so every night before bed she would check off my complete for the day she was very excited for this so I downloaded it again and because my start day had already past it would not let me do it

Jop. M. Apr 6, 2019     

Good one, one improvement/feature I would suggest is to have multiple reminders in a day, if my task has to be performd mutiple times a day.

A. G. u. Feb 11, 2019     

awesome application helped me in creation of good habit.... but it need improvement regarding if some activity is dome weekly or 2-3 day a week .

Phy. b. H. s. May 13, 2021     

App is crashing not opening up..everytime. I tried uninstalling and again istalling

Joa. c. S. Apr 26, 2019     

I love this app. really helpful. I used to do it with paper and pencil until I found this app.

Roh. G. May 11, 2021     

This app was good but now it is continiously crashing in my Redmi note 7 pro. Please solve this issue.

Him. May 27, 2019     

Honest Review: If You really want a change in life and want to Start Doing it then this app is for you.. You'll get more confident when you'll see the progress day by day.. thanks 21 days..

bit. s. Apr 11, 2020     

Very good need to work a little on ui as it seems very retro type.

Goo. E. Jan 16, 2020     

thanks for yor helpful app. I wish it had a widget like the app goal tracker.

Nat. B. Apr 30, 2019     

also the ability to change the order of your list would be useful

Igb. O. Mar 13, 2019     

The app really helped me achieve my goals...I start again once I miss it

Hal. A. Nov 11, 2021     

One of the best app ever. Please solve the current problem in your app, I can't open this app.

Wat. 3. Mar 15, 2021     

The app has been crushing for a few days now. I can't open it at all. Apart from that, it's a great app.

DUR. K. S. Oct 7, 2018     

There should be custom challenge, where I can input challenge that is not given in it.