Comparison

Repflows vs Quiet Iron

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

Head to head
About

Repflows

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RepFlows generates personalized workouts in seconds, tracks every set with RPE, and learns your training pattern over time. Built for lifters who want serious data without spreadsheet babysitting. WHAT YOU CAN DO โ€ข Generate workouts with AI - pick your split, equipment, and target duration. RepFlows assembles a workout from a curated 800+ exercise database in seconds. โ€ข Track sets with RPE - Rate of Perceived Exertion (1โ€“10) on every set, plotted over time so you can see when fatigue is creeping in before it stalls progress. โ€ข Log workouts your way - type, dictate, or pick from history. Build-then-start flow lets you preview the full workout, swap exercises, and edit before you start lifting. โ€ข Browse 800+ exercises โ€” full anatomy diagrams, primary/secondary muscle targeting, equipment filters, and form notes. Favorite the ones you actually use. โ€ข Track personal records โ€” automatic PR detection on weight ร— reps, with progression charts per exercise. โ€ข See body progress โ€” measurements, body weight, photo timeline, all in one place. PRO FEATURES Pro unlocks the full app: unlimited AI workout generation, advanced RPE trend analysis, exercise favorites, body measurement charts, and priority access to new features. โ€ข Free: 5 AI workouts per month, basic logging, exercise browser โ€ข Pro Monthly: $4.99/mo โ€ข Pro Annual: $49.99/yr (save 17%) โ€” includes 7-day free trial โ€ข All plans auto-renew. Cancel anytime in Settings. WHY RepFlows Most fitness apps either overwhelm you with charts or oversimplify into another rep counter. RepFlows sits in the middle: enough data to make real decisions, simple enough to use mid-set. AI generation removes the "what should I train today" friction, RPE tracking catches overreach early, and the exercise database means you're never stuck with a movement you can't perform. PRIVACY Your workouts and measurements stay yours. We don't sell data, run third-party ad networks, or train external models on your training history. Sign in with Apple, Google, or email โ€” your choice. CROSS-PLATFORM RepFlow runs on iPhone and on the web at repflows.ai. Pro subscriptions purchased on iOS unlock both. Your data syncs in real time. QUESTIONS Visit repflows.ai/support or email support@repflows.ai. We reply within 24 hours. Terms of Use: https://repflows.ai/terms Privacy Policy: https://repflows.ai/privacy

About

Quiet Iron

Features
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Quiet Iron is a workout logger for people who'd rather train than deal with a difficult app. No streaks. No feed. No notifications begging you to come back. Just a proven plan and the fastest way to log a set โ€” then you put the phone down and lift. A PLAN THAT'S ALREADY FIGURED OUT Pick a science-backed 4-day upper/lower split and start. It's the structure research keeps pointing to for building muscle โ€” every muscle trained twice a week โ€” so there's nothing to design. THE BARBELL DOES THE MATH Enter the weight per side and see the loaded total instantly, plates and all. Slide the bar open to view both sides, switch between per-side and total, and set your own bar weight. No more plate arithmetic mid-set. LOG A SET IN SECONDS Press a number, swipe to change it, done. Your weight and reps carry over from your last set โ€” and your last session โ€” so usually you just confirm and move on. Step back to fix an earlier set anytime. YOURS ALONE No account, no sign-up, no cloud. Everything you log stays on your iPhone. Quiet Iron has no servers and collects nothing โ€” there's nothing to leak and no one watching. Calm by design. Built for iPhone.

Screenshots

Repflows4 screens
Quiet Iron4 screens

Verdict

The call

The clearest difference is in-app purchases: Quiet Iron at none against Repflows's 2. Repflows's advantage is update cadence (every 5 days vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Repflows sells 2 in-app purchases, starting at $4.99 per month. Quiet Iron asks for nothing beyond the download.

UpkeepUpdate frequency

Repflows ships an update every 5 days, Quiet Iron every 2 months. The most recent releases landed on October 6, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 3 level
Repflows versus Quiet Iron: the parameters behind the verdict, then further details
ParameterRepflowsQuiet Iron
PriceFreeFree
Update frequencyEvery 5 days โ€” betterEvery 2 months
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size45 MB3 MB
Age rating4+4+
DeveloperArvind MorwalTarek Sebaihi

In-app purchases

2 purchases

Repflows

Subscriptions2
  • RepFlow Monthly$4.991 Month
  • Pro Annual7 Days trial$39.991 Year
None

Quiet Iron

No in-app purchases

Questions

Is Repflows free?
Repflows is free to download, with in-app purchases available.
Is Quiet Iron free?
Quiet Iron is free to download, with no in-app purchases.
Do Repflows or Quiet Iron have ads?
Neither Repflows nor Quiet Iron shows ads.
Which is updated more often, Repflows or Quiet Iron?
Repflows ships an update every 5 days, and Quiet Iron every 2 months. Most recently, Repflows was updated on October 6, 2026 and Quiet Iron on October 31, 2026.

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