What should a training app know about your week?
Your goal, your level and how many days you can train are the usual starting questions. For someone who plays a sport, the fact that matters most is which days are already spoken for, so check that the app asks for it. Three things decide whether a plan fits your week or fights it.
The sports you play, and their fixed days
A match is a hard session whether or not your app counts it, and it tires your legs for days. A review of 77 studies covering 1,105 football players found hamstring force, physical performance and soreness still impaired 72 hours after a match. A hard gym session has its own cost: in 10 resistance-trained men, bench press and full squat sets taken to failure slowed recovery for up to 24 to 48 hours, while sets stopped well short of failure recovered faster at the same total volume.
Put the two together and the problem is planning, not willpower. An app that cannot see Saturday's match can schedule heavy squats for Friday, so the match starts inside that recovery window, or a leg day for Sunday, while the legs are still recovering. Neither session is bad on its own; each is in the wrong place. The day before a match has its own page. So ask whether the app lets you mark the days a fixture list or a timetable has fixed, and fits everything else around them.
The classes you take
A class someone else programmed is still training. The 2024 Adult Compendium of Physical Activities, which lists average intensities for adults, rates health club conditioning classes at 7.8 METs, inside its vigorous band of 6.0 and above (a MET is a multiple of the energy you use at rest). An app that treats your Wednesday class as an empty day is planning a harder week than it thinks. One that knows about the class can count it and fit the rest around it.
What happens when the week changes
A fixture moves, a knee gets sore, work takes two evenings. Ask what the app does when you tell it, and whether its help pages list what changes the plan and what leaves it alone. Training apps for HYROX weighs rebuilding straight away against leaving it to you; for an athlete who plays a sport, the first change to test is a fixture that moves. For a sore knee, ask whether it says plainly that it is not a medical service: pain that does not settle is a job for a physio or doctor.
- Tell the app about a match on Saturday and a class on Wednesday.
- Look at what it plans for Friday, and for the day after the match.
- Move the match to Sunday, then see what changes and whether it tells you.
- Find where you would tell it about a sore knee.
An app that cannot take the first step is planning a week you do not have.
Can a chatbot be your coach?
A general AI chatbot such as ChatGPT will write you a first training plan if you ask. That is a reasonable start, and the research is kinder to chatbots than you might expect.
- On common questions, it did well. Nine practising personal trainers supplied the questions they are asked most, with their own answers. ChatGPT (version 3.5) answered the same questions, and 18 trainers and 9 topic experts rated its answers higher overall on six of the nine. The trainers' answers were rated higher on none. The authors call the result exploratory, because they recruited fewer trainers than they had planned.
- On plans, it did better the more it was told. 10 coaching experts rated three six-week running plans ChatGPT wrote from prompts with more and more detail. The overall rating rose from a median of 2 to 4 out of 5, but the authors still called the plans sub-optimal and advised against using them without an expert coach's feedback.
- The pattern held in the gym. In a 2025 study of how repeatable chatbot plans are, 12 coaching experts rated eight muscle-building plans from two chatbots. Detailed prompts produced higher-rated plans, and the same prompt gave plans of the same quality when it was repeated.
Both plan studies tested older versions, and newer ones may do better. What they show is the shape of the problem for an athlete who plays a sport. A chatbot knows what you tell it; keeping the plan right as your week moves is the part you carry. If your match moves from Saturday to Sunday, the chatbot does not know until you tell it and ask for a new week.
Chatbots are not standing still. Depending on the one you use and how you set it up, memory of earlier chats, projects, scheduled check-ins and connections to other apps can narrow that gap. What ChatGPT offers today, from its own help pages, is on the ChatGPT page. Who it suits: a general AI chatbot suits someone who wants quick, sound answers and a first plan, and is happy to keep it current by telling it what changed.
App or person?
A separate question is whether you need a person at all. One recent trial compared three ways of following the same programme. 112 trained adults, each with at least a year of lifting behind them, were randomised to ten weeks of full-body training three times a week: supervised in person, coached at a distance through an online coaching app, with technique videos, progress tracking, reminders and the coach's delayed video feedback on technique, or working alone from a PDF.
| How they trained | Started | Completed 26 or more sessions |
|---|---|---|
| Supervised in person | 17 | 15 of 17 |
| Coached through an app | 48 | 39 of 48 |
| Alone, from a PDF | 47 | 25 of 47 |
Supervision also brought bigger squat gains than either of the other two. The study tested how much supervision people had, not AI, so it says nothing about chatbots. It suggests a person adds most where technique and accountability count, and online coaching through an app kept much of the consistency when nobody was in the room. So the answer is often both: a trainer for a new lift, an app for the week around it. The AI or personal trainer page covers each, and when a physio is the right call instead.
Which kind of tool fits your week?
Find the row that sounds most like your week, then read the page it points to.
| Your week | What to look for | Read next |
|---|---|---|
| Running only, with a running race as the goal | Race plans built for running. A running app built around them may suit you better: Smash Coach has no running race plans. | Runna or Smash Coach |
| Running and lifting, no other sport | One week that balances runs, lifts and conditioning, and a clear answer on whether a person checks the plan. An app built for running and lifting, with video demos or a person checking the plan, may suit you better than Smash Coach here. | Edge or Smash Coach, hybrid training apps |
| A team or racket sport with fixed match days | An app that plans the gym around your fixtures, not one that only logs the match. Give it a week with a match and look at the days either side. | Hybrid training apps, Sports |
| Group classes on a timetable | An app that counts a class as training on the days it runs, instead of adding sessions on top of it. | Classes, hybrid training apps |
| Training for HYROX | Race preparation that covers the stations as well as the runs, and copes when your week changes. | Training apps for HYROX |
| You want a person to check your form | A personal trainer or coach who can watch you lift. Smash Coach has no human coaches, so a person fits better here. | AI or personal trainer |
| You want answers, not a plan | A general AI chatbot such as ChatGPT. In one small study, an older version's answers to the questions personal trainers hear most were rated higher than the trainers' own on six of nine. | ChatGPT |
| More than one sport or class, and a week that moves | One plan that knows every fixed day in your week. Our view: Smash Coach, which with Pro or during your trial plans one week around every sport and class you do. | Add a sport or a class |
What the apps say about themselves
Several apps say on their own pages that they plan around a sport you play, Smash Coach among them, each in its own way. The hybrid training apps page sets Smash Coach and six other apps side by side from their own pages, dated, with one line on who each one suits, and covers demonstrations, races, watches and platforms.
Our view, and what Smash Coach lacks
Our view is that Smash Coach is the right choice for an athlete who does more than one sport, because it plans one week around every sport and class you do, has a coach you can talk to, shows each exercise as a clear illustration and changes the plan when life does. That balance of features and simplicity is our view, not a test result. Your coach's planning, writing, rewriting and chat come with Pro or during your trial.
Add a sport or a class under You, SPORTS STACK, + ADD, and with Pro or during your trial your coach plans around it instead of on top of it. A class counts as training you have done, so with Pro or during your trial your coach adjusts what it gives you instead of adding on top, and a class starts on Fixed days. Each sport is Flexible, where the app picks the days, or Fixed days, where each day you pick is one session a week.
With Pro or during your trial, your plan is rewritten when something real changes, never on a timer, and sessions are written close to their day, so each reflects how the days before it went. Moving a session does not reshuffle the week. Marking one done asks how hard it felt, which the help centre calls the single strongest signal your coach has about how the plan is landing.
With Pro or during your trial, the coach chat already knows your week, and a change it proposes waits on a card for your Confirm. Report an injury or a fatigue flag, from Cleared to Serious, and your coach plans around what you report, with Pro or during your trial. It is not a medical service, and it tells you to see a physio or a doctor.
Workout mode takes you through a session one step at a time, with sets, rest and left and right sides. Exercises are shown as clean illustrations: the movement on a plain background, with nothing extra, so you see what to do at a glance. The team is exploring video and moving images.
What it does not have, and where another option may suit you better:
- No human coaches. Your coach is AI. Feedback you send from the You screen reaches a person, not a queue. A person also looks at a session or a change that fails the automatic safety check, shown as UNDER REVIEW or DOUBLE-CHECKING, but no one checks your plan as a routine step or watches you train.
- Garmin only, on most watches that run Connect IQ apps, with no Apple Watch, Polar, Suunto or COROS app.
- HYROX is the race you can pick today. Other hybrid races, such as ATHX, DEKA and GYMRACE, and running races from 5K and 10K to the half and full marathon are coming soon; until then there are no running race plans.
- It installs from the website to your home screen, not from the app stores.
- No video yet. Exercises are illustrations, not filmed demonstrations; the team is exploring video and moving images. If filmed demonstrations matter to you now, the hybrid training apps table shows which apps describe them.
If one of those rules it out, another app in this section may fit your week better. When your plan changes lists exactly what rewrites a Smash Coach plan and what leaves it alone.
Beyond this section
- Training apps for HYROX: choosing an app for the race.
- Sports: where the gym fits around each sport.
How we check the apps
Facts about other apps come only from their own pages, each linked and dated, and we recheck apps every quarter and chatbots every month. Not stated means we searched and found nothing either way, never that the app cannot do it. There are no prices and no ranking, and we follow the UK rules for comparisons: like with like, on features that can be checked, without running anyone down. If a fact is wrong or out of date, write to hello@smashcoach.app.