Now building in Goodyear, AZ

Your gym has a feed.

Log it. Share it. See who's actually there.

OpenSet is a serious training log with a local gym community wrapped around it. Track lifting and cardio with real detail, then share progress with people who train where you train.

Get the App Read Field Notes

Lift with context Sets, reps, RIR, failure, rep style, warm-ups, and volume.

Cardio with intent Purpose, pace, duration, incline, intervals, environment, and effort.

Local by design Training posts tied to a real place, not a floating hashtag.

What it actually does

Built for people who want the details.

OpenSet is for the athlete who wants clean workout history, real progress context, and a gym community that feels local enough to matter.

LOG

Record the session the way it happened

Working sets, warm-ups, failed reps, RIR, cardio purpose, and session context all live in the log, without making every workout feel like paperwork.

Progress that keeps its receipts

Personal records, volume, exercise history, and trend context help you understand what changed, not just whether a number went up.

LOCAL

A feed for your actual gym

Groups, posts, training activity, and local conversations give every gym a pulse without turning OpenSet into another generic social feed.

Launch city

Starting in Goodyear. Expanding gym by gym.

Local fitness only works when the people are actually local. OpenSet is launching intentionally, one market at a time, so each gym feed has a real chance to feel alive instead of empty.

Pick your home gym

OpenSet centers your experience around where you train most often.

Log sessions with depth

Your training history becomes useful because the important context is captured.

Share when it matters

PRs, sessions, questions, goals, and gym-specific posts give the feed its signal.

OpenSet Field Notes

Training notes with a point of view.

Field Notes is where OpenSet explains the details it tracks: RIR, cardio purpose, pace, failure, range of motion, progress context, and the gym habits everyone pretends are normal.

Cardio Deep Dive

Zone 2 Cardio for Lifters Who Pretend Cardio Is Illegal

You do not need a heart rate strap and a spreadsheet. You need thirty minutes and a nose you can breathe through.

7 min readReviewedTurns into social cuts

Training Explainer

What RIR Actually Means

Reps in reserve is a useful number, not a religion. Here is how to actually use it.

6 min readStrengthOpenSet Field Notes

Form Detail

Why Range of Motion Notes Matter

Depth, control, and partial reps change what a number means. The log should remember that.

5 min readStrengthTechnique context

Browse Field Notes

Get the app

Be first in line when OpenSet opens near you.

Drop your email and we will send the download link as soon as OpenSet is ready for your gym. Useful Field Notes may occasionally sneak in too.

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