Strength workout apps: TandemFit, Hevy or Strong?

A useful lifting log gives you something concrete to return to: the routine you followed, the work you recorded, and the sessions that make up your week. If you also run or cycle, seeing those activities alongside strength training can make that record easier to review.

TandemFit brings workout tracking, exercise search, and repeatable routines together. Hevy and Strong also document lifting logs and routine tools. This comparison looks at the tasks behind those features, from finding an exercise to reviewing your completed training.

What will you use during a lifting week?

Think about an ordinary session before comparing a long feature list. You need to find the movements in your routine, record what you do, and return to the record later. If your gym setup changes, finding exercises for the equipment you have becomes part of that routine too.

✓ = supported feature. —* = not listed in the official feature documentation reviewed.

How the features differ

Plan workouts and track your lifts

In TandemFit, templates help you return to a familiar workout, while program following gives your sessions a structure. Your logged workouts then provide a record of the training you actually completed. That is useful when a planned three-session week becomes two: you can look back at what happened before deciding how to approach the next week.

The exercise library supports another everyday decision: finding movements that fit your setup. Search and filter by muscle, equipment, and exercise type to narrow the list. If you are training with dumbbells at home one day and gym equipment another, those filters help you find relevant exercises without starting an unrelated search.

A matching exercise still needs to suit your routine and experience. The benefit of a filter is a more relevant list to work from, rather than a promise that every result belongs in your plan.

Remember your gym and the equipment you used

TandemFit lets you tag a workout with your gym and record equipment from that gym's list. Where available, the equipment details include the brand, model, and size. That makes it easier to remember which setup you used when you return to the exercise.

Hevy offers equipment settings and custom exercises, while Strong supports custom exercises and notes. TandemFit's gym equipment feature links the exercise to equipment listed at that location.

Check when your gym is busy

Gym pages show current activity and typical busy times where data is available. You can use that information when deciding when to train. These views reflect recorded gym activity; they are not a guarantee of an empty gym or an available machine.

Track lifting and cardio together

TandemFit also records outdoor running, walking, and cycling. You can review those sessions alongside your strength training instead of reconstructing your week from separate records. For someone who lifts twice and runs twice, that means the training history reflects both parts of the routine.

Reviewing the week can prompt practical questions: did you complete the sessions you intended, did your schedule change, and which routine do you want to return to? The log provides context for those decisions; it does not guarantee a particular strength result.

Track meals and body measurements

TandemFit includes meal and macro logging, free barcode scanning with a daily allowance, and a monthly allowance of free body scans with measurement estimates included. Those tools put food and body progress alongside your lifting history. Strong supports imported nutrition totals and manual calorie entries; Hevy offers progress photos and manually entered measurements. Photo-based estimates add another way to follow progress beyond weight.

How Hevy and Strong organize the lifting log

Hevy documents workout logging, saved routines, exercise history, and set types. Strong documents workout logging and saved routines, with progress charts and tools such as a warm-up calculator. These are documented feature differences, not findings from comparative hands-on testing.

See where your training effort is concentrated

TandemFit's strain levels show recent load across muscle groups and cardio. For a week that combines squats, upper-body work, and running, that gives you a quick view of where the effort has gone. Strain describes recorded training load, not how recovered you are.

Hevy also shows trained muscles and set distribution through heatmaps and charts. Strong offers exercise progress charts. TandemFit adds its muscle and cardio strain view to the wider training, food, and body-progress tools already in the app.

Ask about your own training

AI trainer chat can answer questions using your workout history and other supported logs, so the conversation has more context than a generic fitness prompt. Claude and ChatGPT connections also let you discuss shared fitness records in a connected assistant. They read your records without changing your workouts, and assistant account and connection requirements apply.

Why TandemFit is our overall pick

TandemFit is our best overall pick for lifters who want more than a workout log. Alongside workout plans and exercise tracking, it includes gym tags, gym equipment tracking, busy-time information, meal logging, body scans, and GPS cardio. Hevy and Strong cover the lifting basics; TandemFit brings more of the rest of your fitness routine into the same app.

TandemFit publishes this comparison. Product information checked: 2026-09-20.