Comparison

One Rep Max vs NINE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

One Rep Max

Safely estimate your maximum lift potential for various strength exercises using scientific formulas. Track your progress visually, set goals, and fine-tune estimates with perceived exertion. Ideal for powerlifters, CrossFit athletes, and strength enthusiasts.

Highlights
  • Precise 1RM calculations with 7 scientific formulas
  • RPE integration for fine-tuned estimates
  • Custom exercise tracking for any lift
  • Visual progress graphs
  • Percentage charts for training
  • Goal setting and progress monitoring
Features
Read full description

Stronger Training, Smarter Progress One Rep Max helps you safely and accurately determine your maximum lift potential for bench press, deadlift, squat, and any other strength exercise - without risking injury. Key Features: • Precise Calculations - 7 scientific formulas for accurate strength predictions: Epley, Brzycki, Lombardi, Mayhew, McGlothin, O'Conner, Wathan • RPE Integration - Factor in Rate of Perceived Exertion to fine-tune your max estimates based on how difficult sets feel • Custom Exercise Tracking - Create and monitor any lift that matters to you • Visual Progress - Beautiful graphs show your strength journey over time • Percentage Charts - Quick reference guide for training percentages • Goal Setting - Set targets and track your path to reaching them Perfect for: • Powerlifters optimizing their training cycles • CrossFit athletes tracking multiple movement patterns • Olympic weightlifters monitoring progress • Strength enthusiasts at any level Advanced Features: • Choose between multiple calculation formulas for different lift types • Track unlimited exercises with custom notes • Rate of Perceived Exertion (RPE) - Fine-tune your 1RM estimates based on how difficult sets feel • Analyze detailed statistics including volume and frequency • Set and monitor progress toward specific strength goals The Science Behind The Numbers: Our app employs multiple validated formulas to estimate your one-rep maximum based on your performance with submaximal weights. This provides you with safe strength targets before attempting potentially risky maximal lifts. Safety Note: Heavy weightlifting should always be performed with proper technique and appropriate spotting. This app provides estimates based on scientific formulas, but individual performance may vary based on experience level and training history. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

NINE

Read full description

NINE üyeliğinizi yönetmek için kullanılan bir IOS uygulamasıdır. Müsteri Programları, Ölçümleri, Stüdyo Ders İşlemlerini gerçekleştirebilen Senkron Yazılım tarafından üretilmiş bir IOS uygulamasıdır.

Screenshots

One Rep Max4 screens
NINE4 screens

Verdict

The call

The clearest difference is in-app purchases: NINE at none against One Rep Max's 3. NINE also leads on iOS requirement (11.0 vs 15.0). One Rep Max's advantage is update cadence (every 4 days vs every 22 months) and device support. On price there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. One Rep Max sells 3 in-app purchases, starting at $2.99 per month. NINE asks for nothing beyond the download.

UpkeepUpdate frequency

One Rep Max ships an update every 4 days, NINE every 22 months. The most recent releases landed on September 14, 2026 and May 18, 2026 respectively.

Scorecard4 real differences · 6 level
One Rep Max versus NINE: the parameters behind the verdict, then further details
ParameterOne Rep MaxNINE
PriceFreeFree
Rating4.4 (178 ratings) — better
Positive reviews58.2% of reviews
Number of ratings178 — better
Update frequencyEvery 4 days — betterEvery 22 months
AdsYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases
DevicesiPhone, iPad, iPod — better
Requires iOS15.011.0 — better
Further details — not scored
Size48 MB56 MB
Age rating4+4+
DeveloperCharles VanderhoffSENKRON BILGISAYAR OTOM LTD.

Bugs and requests

One Rep Max

Reported bugs

13 issues
  • Features behind paywall
  • Forced ads
  • Deleted lifting history
  • Lost all logs with update
  • Weight limit restriction
Show 8 more
  • Reloads excessively
  • Wonky and now dead
  • Complicated and too much offered
  • Not intuitive for tracking
  • Buggy about dates and lifts
  • Cannot select other lifts
  • Only logs back squats
  • App copying content from clipboard

Requested features

7 requests
  • Allow editing of logs (date/time)
  • Manual entry for weight preferred over slider
  • Include different 1RM formulas (Epley, Brzycki)
  • Ability to create custom graphs
  • Fix weight limit restriction
Show 2 more
  • Allow logging of more than 1073 pounds
  • Update app

NINE

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

One Rep Max

Subscriptions2
  • 1RM Pro Monthly$2.991 Month
  • 1RM Pro Annual7 Days trial$19.991 Year
One-time1
  • 1RM Pro Lifetime$49.99
None

NINE

No in-app purchases

Questions

Is One Rep Max free?
One Rep Max is free to download, with in-app purchases available.
Is NINE free?
NINE is free to download, with no in-app purchases.
Which is updated more often, One Rep Max or NINE?
One Rep Max ships an update every 4 days, and NINE every 22 months. Most recently, One Rep Max was updated on September 14, 2026 and NINE on May 18, 2026.

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