Before I built Mass in Motion, I used a stack, like most people who train this way.
A running app for the plan. A lifting app for the log. A nutrition app for food. Whatever my watch came with for recovery. And a spreadsheet to make the week make sense.
Every one of those apps was good at its job. The problem was the space between them.
Full disclosure: I build an all-in-one app, so I have an opinion here. I have tried to be fair about when a stack is the better call, because sometimes it is.
What a typical stack looks like
- A running app that builds your plan and paces.
- A lifting app that logs your sets, maybe writes your program.
- A nutrition app that tracks calories and macros.
- A wearable app that gives you a recovery or readiness number.
Each one has its own subscription, its own notifications, and its own idea of what your week looks like.
Where a stack breaks down
Nobody owns the schedule
Your running app does not know you squatted heavy yesterday. Your lifting app does not know you have intervals tomorrow.
So the running app puts a hard session the day after your hardest leg day, and both apps think the week looks great. You are the only one who can see the conflict, and you have to fix it by hand every week.
This is the one that matters most. Hard running and heavy lower-body lifting both cost your legs, and the order and spacing of those days decides whether both keep improving. I go into the details in lifting and running on the same day.
Recovery data with nowhere to go
Your wearable tells you recovery is low. Then what?
Your lifting app does not see that number, and only some running apps do. And a low reading before an upper-body day is a different problem from the same reading before a max-effort deadlift. The recovery app does not know what is coming next, and the training apps do not know how you slept.
So you guess.
Your food log and your training never meet
A good nutrition app learns your real calorie burn from what you eat and how your bodyweight trends. That is the right way to set targets, and the better nutrition apps already do it.
But your training plan still cannot see what you ate, and your food log cannot see what you trained. When the week gets harder, you are the one connecting those dots.
You log the same thing twice
Run synced to one app but not the other. Bodyweight entered here but not there. Small, but it adds up, and it is an easy reason to stop logging altogether.