Comparison

Basalt Lab vs RepFlow

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

Head to head
About

Basalt Lab

This app meticulously logs every workout set, transforming your training data into visible progress. It offers manual logging and advanced 'Lab' modes, with Apple Watch integration and Live Activities for seamless tracking. Analyze your performance with detailed statistics and insights to ensure consistent improvement.

Highlights
  • Manual and 'Lab' workout logging modes
  • Apple Watch integration for wrist-based logging
  • Live Activities and Dynamic Island support
  • Extensive exercise library with superset options
  • Pre-made and customizable workout plans
  • Detailed performance statistics and progress analysis
  • Plateau detection and 1RM projection
Features
Read full description

Every set you grind out deserves to be counted. Basalt Lab is the data discipline of a spreadsheet, built into native iOS: you train, the app keeps score, and your progress becomes visible, session after session. Two modes, depending on how you train: β€’ Manual: log a set in a few taps and get back under the bar. β€’ Lab (Pro): validate with a swipe and the rest rolls into the next set. Your phone fades into the background. YOUR SESSION, WITHOUT FRICTION β€’ Your previous session replayed set by set (Pro): you know exactly what to beat today, and today's load wins when it's heavier. β€’ Apple Watch: dial in reps and weight with the Digital Crown and log the set from your wrist, phone stays in the bag. β€’ Live Activities + Dynamic Island: your session stays in sight on the Lock Screen; in Lab mode, your rest and your next set too. β€’ 500 exercises, supersets (Pro), swap an exercise mid-session. β€’ 113 ready-made workouts, sorted by goal and ready to start (41 free): you pick, the app runs it. PROOF YOU'RE MOVING β€’ 47 statistics (14 included, +33 with Pro) built around the only question that matters: are you actually progressing? β€’ Plateau detection (Pro): know it's stalling before you lose weeks to it. β€’ Your 1RM projected at 3 and 6 months (Pro): see where you're headed, not just where you've been. β€’ Push/Pull ratios, strength radar, an overtraining alert when your volume runs past your average (Pro). β€’ Regularity heatmap, streaks and trophies: your consistency finally shows. β€’ Your session heart rate (Apple Watch): the curve, your average and your max on your recap, plus your recovery with Pro. β€’ Add past sessions to your calendar (Pro): your history stays complete, even when life gets in the way. β€’ A session recap you can share as an image, when you have something to show. WHO IT'S FOR For serious lifters who want to progress without noise. No imposed coach, no childish badges, no social feed: nobody to impress, just you and your numbers. FREE VS PRO Free: unlimited workout journal, 14 statistics over the last 4 weeks, 3 custom sessions and 5 custom exercises (4 exercises per session), Manual mode, Watch, Live Activities, widget, trophies. Pro (monthly or annual, both with a free trial): Lab mode, set-by-set prefill, the other 72 ready-made workouts, supersets and session comparison, past sessions, unlimited customization, unlimited stats history, +33 advanced statistics and the strength radar. THE METHOD, DOCUMENTED The average lifter who tracks their progress does better than 66% of those who don't (Harkin et al., 2016). Same program, app-guided: the sessions get done. Alone, one in two gets skipped (Gavanda et al., 2025). Studies on the methods: not on the app itself. YOUR DATA, YOURS Your workouts, loads and health data are never shared. Once you're signed in, the app works offline: your history lives on your device and belongs to you. Backups hosted in the EU (Paris). You rack the phone, you grab the bar. We keep count. Basalt Lab Pro: auto-renewable subscription. β€’ Monthly: $7.99/month. β€’ Annual: $49.99/year, i.e. $4.17/month. Both plans start with a free trial; one trial per Apple Account, whichever plan you choose. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscription and turn off auto-renew in your Apple Account settings. Prices shown for the U.S. store; they may vary by country. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://basaltlab.app/privacy

About

RepFlow

Log your weightlifting sets and track your progress with a unique strength card that levels up as you do. Get personalized lifting targets from a virtual coach and access ready-made workout programs. Share your achievements and compare cards with friends.

Highlights
  • Strength card progression system
  • Virtual coach for lifting targets
  • Workout logging with sets and reps
  • Customizable workout routines
  • Progress tracking and history
  • Social sharing of strength cards
  • Ready-made workout programs
Features
Read full description

RepFlow turns your workouts into a strength card. Log your sets in 2 taps: your card levels up with you, from Bronze to Elite, and Spot, your coach, tells you what to lift next time. YOUR REPFLOW CARD - Your real strength rating, based on your lifts, your bodyweight and your age. - 8 tiers, from Bronze to Elite: every workout can level you up. - Rare cards to unlock: Consistency, In shape, Comeback… all kept in your album. - Your photo and your @ on your card, ready to share. - Compare your card with your friends'. SPOT, YOUR COACH - A target for every set, pre-filled in your workout. - Check in on your week, a routine or an exercise. - Unlock an exercise when you stall, with a clear plan. - Heavier or more reps? The Lab decides, set by set. - Your way to progress: strength, double progression, pyramids… set exercise by exercise. YOUR LOG - Workouts, routines, supersets, drop sets and full history. - Ready-made programs from sign-up. - Your workout on the lock screen: rest timer and a vibration when it's over. - Your flame: keep your streak of training weeks alive. - Muscle map, progress by exercise, friends and a Sunday recap. Note: the app itself is currently in French. REPFLOW PRO RepFlow is used with a RepFlow Pro subscription (monthly or yearly), with no free trial. It renews automatically and can be cancelled anytime from your Apple account. Terms of Use: https://repflow-5e78a.web.app/terms Privacy Policy: https://repflow-5e78a.web.app/privacy

Screenshots

Basalt Lab4 screens
RepFlow4 screens

Verdict

The call

The clearest difference is monetization model: Basalt Lab at freemium against RepFlow's subscription. Basalt Lab also leads on review sentiment (100% vs 67%). On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Basalt Lab sells 4 in-app purchases, starting at $5.99 per month and RepFlow sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Basalt Lab ships an update every 3 days, RepFlow every 5 days. The most recent releases landed on November 9, 2026 and November 11, 2026 respectively.

Scorecard2 real differences Β· 6 level
Basalt Lab versus RepFlow: the parameters behind the verdict, then further details
ParameterBasalt LabRepFlow
PriceFreeFree
Positive reviews100.0% of reviews β€” better66.7% of reviews
Update frequencyEvery 3 days β€” betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium β€” betterSubscription
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.016.0 β€” better
Further details β€” not scored
Size143 MB89 MB
Age rating12+4+
DeveloperOtia LTDLohan Thiel

Customer experience

Basalt Lab

Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RepFlow

Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

4 purchases

Basalt Lab

Subscriptions4
  • Basalt Lab Pro$5.991 Month
  • Basalt Lab Pro7 Days trial$7.991 Month
  • Basalt Lab Pro3 Days trial$34.991 Year
Show 1 more
  • Basalt Lab Pro7 Days trial$49.991 Year
6 purchases

RepFlow

Subscriptions6
  • RepFlow Pro Monthly7 Days trial$9.991 Month
  • RepFlow Pro Monthly$9.991 Month
  • RepFlow Pro, Special Offer$34.991 Year
Show 3 more
  • RepFlow Pro Annual7 Days trial$59.991 Year
  • RepFlow Pro Yearly14 Days trial$59.991 Year
  • RepFlow Pro Yearly$59.991 Year

Questions

Is Basalt Lab free?
Basalt Lab is free to download, with in-app purchases available.
Is RepFlow free?
RepFlow is free to download, with in-app purchases available.
Do Basalt Lab or RepFlow have ads?
Neither Basalt Lab nor RepFlow shows ads.
Which is updated more often, Basalt Lab or RepFlow?
Basalt Lab ships an update every 3 days, and RepFlow every 5 days. Most recently, Basalt Lab was updated on November 9, 2026 and RepFlow on November 11, 2026.

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