You log the set.
We prove it worked.
Three steps. Objective proof you're getting stronger.
Three steps. That's it.
Set your exercises, sets, and reps — or pull in a past workout. Lock it in before you start.
Tap Start when you begin a set, Stop when you rack it, then enter your reps and weight. That's the whole log.
ITERUM turns your time, weight, and reps into a Force score. More Force than last week means you got stronger.
Build your plan, then tap Start on the stopwatch right as you begin your first set.
The App vs. The Full System.
Log It. Prove It.
Start and stop the built-in timer for each set, then enter your reps and weight. Download and go.
Join Now →Zero Logging.
Camera and sensor hardware installed on your gym's floor — walk in, train, and get your Force score with nothing to tap and nothing to type. Rolling out to partner gyms next.
Get ITERUM at Your Gym →Three Numbers In. One Score Out.
What you enter for the set — same as any workout app.
What you enter for the set.
Timed by you with the built-in stopwatch — Start when you begin, Stop when you rack it.
Mass times acceleration. Your objective strength score, from the three numbers above. Comparable week over week.
You log the set. We turn it into an objective Force score.
Your Phone Is the Tracker. Any Gym, Anywhere.
Log your sets from your phone, wherever you train. Same flow, same Force metric — your home gym, a new gym, on the road, anywhere.
Works at any gym, right now. Just your phone — log each set as you go, no new equipment needed.
We're building camera installs for partner gyms — walk in and train, no phone needed. Rolling out in a future update.
ITERUM adds the one layer every wearable is missing: proof your training is actually working, not just an estimate of how hard your heart worked.
The Metric That Answers Progressive Overload.
Everyone knows the principle. Do more than last time and you get stronger.
The problem is knowing when. When is the weight ready to go up? When did you actually improve?
Heart rate, calories, and RPE cannot answer that. They tell you how hard you worked. Not whether your output increased.
Force can. Mass times acceleration. Calculated per set. Compared week over week. The same metric elite coaches have used for decades — now accessible for everyone, right from your phone.
Decades of peer-reviewed research confirm force output is the most accurate measure of strength adaptation available.
Olympic programs and professional sports teams use this metric to track athlete development. ITERUM makes it accessible for the first time — no lab, no $10,000 plates, just your phone.
Wearables carry 15 to 57 percent error during lifting. They measure effort. Force measures output. One tells you how hard it felt. The other tells you if you got stronger.
A 5kg decline in grip strength is associated with a 16% increase in all-cause mortality risk. Resistance training at 60 to 120 minutes per week reduces all-cause mortality by up to 27%. No current commercial system can measure whether a member is hitting that training dose. ITERUM can.
Sources: PMC Systematic Review 2024 · Journal of Sports Sciences 2021 · VALD Performance Research · PMC Grip Strength Mortality 2021 · AJPM 2022
We Don't Just Measure. We Tell You What's Next.
Every set you log gets converted into an estimated one-rep max using the Epley formula — 1RM = weight × (1 + reps ÷ 30) — the same formula strength coaches have relied on for decades, applied to any set of 1 to 10 reps. It's never stored as a fixed number; ITERUM recalculates it fresh from your best working set each session (warmups don't count), so one off day never throws off your trend.
Velocity-Based
Time your reps with the built-in stopwatch and ITERUM compares today's bar speed against your own rolling 30-day baseline at that weight. Faster than your usual pace, or you cruised through every planned rep without slowing down? Add weight next time. Noticeably slower than baseline? That's read as a recovery signal — back off instead of grinding through it.
Traditional
No timer required. ITERUM watches two sessions at a time: comfortably clear your rep target two sessions running and it calls for more weight — roughly 2.5–5% for upper-body lifts, 5–10% for lower-body, the same increments strength coaches have used for decades. Miss your targets two sessions in a row and it recommends a deload instead — about a 10% cut — so you rebuild instead of stalling out.
Safety comes first either way: ITERUM always checks for a recovery or deload signal before it ever recommends more weight or more reps — protecting against overtraining takes priority over chasing a number up.
Pick a goal, get a rep range and a load.
3–5 reps
85–100% of 1RM
6–12 reps
65–85% of 1RM
12–20 reps
50–65% of 1RM
3–6 reps
70–85% of 1RM
Everything Else Requires a Compromise. We Do Not.
The comparison below is for the full ITERUM system — the camera and sensor hardware built for commercial gym floors, rolling out to partner gyms next.
| FEATURE | ITERUM full hardware — coming soon | FORCE PLATES | VBT DEVICES | CONNECTED EQUIPMENT | EXERSIGHT | KEMTAI | WEARABLES |
|---|---|---|---|---|---|---|---|
FORCE | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ |
Works on existing equipment with no modifications | ✓ | ✗ | ✗ | ✗ | ✓ | ✓ | ✓ |
Scales to full gym simultaneously | ✓ | ✗ | ✗ | ✗ | ✓ | ✗ | ✗ |
No manual entry or logging | ✓ | ✗ | ✗ | ✓ | ✓ | ✓ | ✗ |
Identifies load automatically | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ |
Cost accessible for average gym | ✓ | ✗ | ✗ | ✗ | Limited | ✗ | ✗ |
Force plates cost $10,000 to $50,000 and require a specialist. VBT devices need one sensor per barbell — they do not scale. Connected equipment replaces everything and is priced for home use. Gym software logs what you type in, not what you lifted. Exersight uses cameras for form, not force, and its pricing is not publicly available — cost accessibility for the average gym is unconfirmed. Kemtai is rehab-focused with no load identification. Wearables track heart rate and sleep. None of them tell you whether you got stronger. ITERUM is the first system built to calculate an objective strength metric at commercial gym scale — a quick manual log in the app today, with fully automatic camera hardware (about $700 per bay) rolling out to partner gyms next. No sensors on equipment.
Join ITERUM Now.
Create your account in the app to get started.