Support

About the app

The Maximal Performance 1RM & Strength Standards app is a free tool that estimates your one-rep maximum across the main barbell lifts and shows you where you rank against strength standards relative to your bodyweight. All calculations happen on your device — no account required, no data collected.

Frequently asked questions

How is my 1RM calculated?

The app uses the Epley formula: 1RM = weight × (1 + reps / 30). This is one of the most widely used and validated formulas for estimating a one-rep maximum from a submaximal set. Results are most accurate when using a weight you can lift for 3–10 reps — estimates become less reliable above 12 reps.

Which lifts does the app cover?

The app covers the five main barbell lifts: squat, bench press, deadlift, overhead press, and barbell row.

Where do the strength standards come from?

Standards are based on widely referenced bodyweight-relative benchmarks used across the strength training community (sources include ExRx and Symmetric Strength data). They are divided into five levels: beginner, novice, intermediate, advanced, and elite. These are general benchmarks intended as a guide — individual variation in leverages, training history, and equipment will affect your numbers.

My estimated 1RM seems off — why?

1RM formulas are estimates, not exact measurements. Factors like fatigue, technique, rep speed, and individual neuromuscular efficiency all affect the accuracy. For the most accurate result, use a weight you fail or nearly fail at 3–5 reps under controlled conditions. The only way to know your true 1RM is to test it directly.

Does the app save my data?

Any lift data you enter is stored locally on your device only. The app does not collect, transmit, or store any personal information on external servers. Deleting the app removes all locally stored data.

Do I need an account to use the app?

No account is required. Open the app, enter your lifts, and get your results immediately.

The app isn't opening or is crashing — what do I do?

Try closing the app fully and reopening it. If the issue continues, delete and reinstall the app from the App Store. If you're still having trouble, contact us at support@maximalperformance.nz with your device model and iOS version.

What devices does this app support?

The app requires iOS 16 or later and is compatible with iPhone and iPad.

Is the app really free?

Yes — completely free with no subscription, no in-app purchases, and no ads.

I want a program to improve my numbers. Where do I go?

Head to maximalperformance.nz to learn about our 12-week mass-building programs — built to move you up through the strength standards.

Contact us

For any support questions not covered above, email us at support@maximalperformance.nz. Please include your device model and iOS version to help us respond faster.