Make it a universal app to be installed on a Windows 8.1/10 PC. By doing this the user can build the workout on the PC and sync it to the phone.

I use two different 12 week programs and would like to build them by groups. Thus way, we see the routine name on the main workout page, select that name to bring us to the workout routine. The way it is now, if I build both, the list is huge.

I have a workout of 20 exercises. It would be nice to see how far I am in it while entering exercise data, on the "sets" screen where I enter reps and weights.
A progress bar along the top or bottom of the screen, of as many sections as there are exercises in a workout, or a counter "exercise 5 of 20", would help. Thank you,

Creating a section to include the Nutrition facts (Maybe connecting the DB with Health app of MSFT). Calculation the Fat, Carbohydrates, Protein, Sugar etc.. interacting directly with the workouts and elaborating charts.

Would be nice to upload images to custom exercises, in addition to text descriptions and tips that are already there.

Thank you.

I would like to have everything synced with my fitbit account! Moreover I use runtastic and endomondo from time to time!

Editable notes for particular sessions for pre-, intra-, and post-workout/session observations and other pertinent info

Sync workouts with Microsoft Band giving a more in depth view of the total workout. For example, the band could mark start and end times and count reps and sync heart rate.

Great app, but I'm not too knowledgeable about working out, it would be nice if there was an easy way to see what others are doing and what works for them.

Add An Achievements system to stay more motivated. I like to unlock achievements like "Do 3 sets of 10 reps of 50kg bench press" and when it is achieved a new achievement of 60kg is available.
Add a new window with all the achievements unlocked (like trophies) and the option to share them in social networks.
You can take ideas from the world if warcraft achievement system or nike running achievement system.

It would be great if there was a way to save HIIT or Tabata timers. The timers could have custom intervals, and the number of rounds would be specified.

Example: Tabata 30
Work: 30 seconds
Rest: 20 seconds
Rounds: 8

I currently use Liftbook soley because it is one of the only apps on windows phone that does the calculations for Wendler 5/3/1. Adding in support for programs like this, Starting Strength, and others would be extremely useful for programing workouts.

Change the timer setting page to show three or four default timer settings (30/60/120) and a custom setting option for a quick change between exercises.

Spanish please, Español por favor y compro la Aplicación!

Whyvonly body fat % can be entered?

Include a way to track BMI based on waist circumference or body fat by caliper measurements.