Day F: Hiit & Exercise tracker 4+

Crossfit challenges & WOD

Ekaterina Rodionova

    • 5.0 • 71 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


Welcome to customizable fitness with Day F!

- Create all sorts of custom workouts, add custom pictures, workout tips, equipment list, etc. You can make your own workouts look like those created by celebrities and run them like a pro: with the timer, full-screen images / videos and voice guidance.
- Take your favourite fitness program, adjust it per your needs and keep it in Day F. You can also create workouts based on Instagram / Youtube videos posted by your favourite trainers - they will be so much easier to follow.
- Create your own time/reps/weight-based exercises or use our growing database with videos and lots of adjustable attributes.

- Speech recognition makes it easier to create custom workouts: just say something like “burpee - 10 reps” while holding the microphone button, and the app will fill in the configuration for you.

- Generate workouts with a single tap: our proprietary workout generation algorithms make sure your workout is unique, fun and efficient.

- Exercise anywhere, anytime thanks to offline access. Our database of exercises consists mostly of bodyweight and minimal equipment exercises.

- Every activity is logged in the calendar. Every day can become an F Day!

- Apple Health ultimate integration allows you to track workouts from other apps in Day F.

- Lots of fun animations and user-friendly UI to keep you entertained while using the app.

- We strongly believe that fitness is for everyone, so our subscription price is one of the cheapest on the market.

- We strive to make regular updates of both the functionality and the content. Anything you would like us to add or fix - just let us know, and we will try to make it happen.

The download and usage of Day F is free of charge. However, you will need a Premium version to unlock unlimited number of saved workouts and use all exercises in our database. Premium is available in 2 flavours: subscription and one-off purchase. Free trial is available for the annual subscription.
Terms of Use:

What’s New

Version 4.0.0

- New onboarding experience
- Minor bug fixes and UI improvements
- Let us know if you have any suggestions!

Ratings and Reviews

5.0 out of 5
71 Ratings

71 Ratings

Carroll Cummerata ,

Highly recommended

Pretty good and nice clean interface which can easily be navigated. Would be nice when you create your own plan you have the choice to choose the rest time. It does have this but for example instead of every 15 seconds then jump to 30 allow second by second.

Developer Response ,

Hi Carroll Cummerata,
Thanks for your review, we 🖤 to hear your feedback!
The app does allow you to enter rest time second by second: instead of using time buttons at the bottom, fill in the configs manually or use speech recognition. If you are having any troubles, please drop us an email to with some screenshots and we’ll help.

Pascale Boehm ,

Fun To Use

Good free version of the app as the ads aren't in your face, just a little bar on the bottom so you can still work out without having to close any pop ups. Also the workouts are quite good, easy to follow for beginners and it really gets the blood flowing

Schmidt Paucek ,


the voice timing needs to be adjusted a bit and you should add a "good, stop" or "done" or "time" when time is up, but those are minor things, this app is fantastic. best free cardio app out there and I've tried many.

Developer Response ,

Hi Schmidt Paucek,
Thanks for your review, we are glad you like the app 🥳. Feedbacks like yours help us heaps to improve. We will add an option to replace sound effects with voice instructions in a future release. Keep an eye on the updates 😉

App Privacy

The developer, Ekaterina Rodionova, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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