Basalt Lab vs Kalos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Basalt Lab
Track your weightlifting progress with detailed statistics and automated logging. Features include manual set entry, rest timers, and Apple Watch integration for seamless workout tracking. Visualize your gains and identify plateaus to optimize your training.
- Automated workout logging
- Rest timer and set validation
- Apple Watch integration
- Live Activities and Dynamic Island support
- 370+ exercises and pre-made workouts
- 48 detailed statistics
- Plateau detection and 1RM projection
Read full descriptionHide 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: • Manual: log a set in 2 taps and get back under the bar. The rest timer is there when you want it. • Lab (Pro): validate with a swipe and the rest rolls into the next set. Your phone fades into the background. YOUR SESSION, WITHOUT FRICTION • Your previous session replayed set by set (Pro): you know exactly what to beat today, and today's load wins when it's heavier. • Apple Watch: log from your wrist with the Digital Crown, phone stays in the bag. • Live Activities + Dynamic Island: your rest and your next set stay in sight on the Lock Screen, in both modes. • 370+ exercises, supersets (Pro), swap an exercise mid-session. • 52 ready-made workouts, ready to start (12 free): you pick, the app runs it. PROOF YOU'RE MOVING • 48 statistics (14 included, +34 with Pro) built around the only question that matters: are you actually progressing? • Plateau detection: know it's stalling before you lose weeks to it. • Your 1RM projected at 3 and 6 months: see where you're headed, not just where you've been. • Push/Pull ratios, strength radar, an overtraining alert when your volume runs past your average. • Regularity heatmap, streaks and trophies: your consistency finally shows. • Your session heart rate (Apple Watch): the curve on your recap, your average, your max and your recovery. • Add past sessions to your calendar (Pro): your history stays complete, even when life gets in the way. • 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, Manual mode, Watch, Live Activities, widget, trophies. Pro (7-day free trial, monthly or annual): Lab mode, set-by-set prefill, supersets and session comparison, past sessions, unlimited customization, unlimited stats history, +34 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 No ad trackers. The app works fully 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. • Monthly: $7.99/month. • Annual: $49.99/year, i.e. $4.17/month. Each plan starts with a 7-day free trial; the trial is granted once per Apple Account. 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
Kalos
Read full descriptionHide full description
Kalos : Workout — l'application ultime pour progresser en musculation. Kalos a été conçue autour d'une conviction simple : ce qui se mesure progresse, et ce qui se joue devient une habitude. Chaque fonctionnalité de l'application poursuit le même objectif — augmenter vos performances et votre régularité, séance après séance. VOTRE PROGRESSION, ENFIN VISIBLE Toutes vos séances alimentent un niveau et un rang qui évoluent avec vous. Vos charges, vos records et l'équilibre de votre corps sont suivis avec précision. Vous ne vous demandez plus si vous progressez : vous le voyez, chiffres à l'appui, dès la fin de votre entraînement. DES QUÊTES QUI VOUS POUSSENT PLUS LOIN Objectifs quotidiens, hebdomadaires et mensuels, pensés pour vous faire ajouter la série de plus, revenir le jour où l'envie manque et tenir sur la durée. Votre régularité est valorisée à sa juste valeur, car c'est elle, plus que n'importe quel programme, qui construit les résultats. UNE COMPÉTITION QUI VOUS TIRE VERS LE HAUT Mesurez-vous au monde entier, à votre pays ou à vos amis. Une place à défendre et un objectif à rattraper transforment chaque séance en occasion de gagner du terrain. C'est l'émulation d'une salle de sport, disponible en permanence. DES RANGS ET DES SUCCÈS QUI SE MÉRITENT Dix rangs, de Fer à Ultime. Des titres et des succès à débloquer au fil de votre parcours. Chaque palier franchi récompense des mois de travail et alimente l'envie d'aller chercher le suivant. TOUT VOTRE ENTRAÎNEMENT AU MÊME ENDROIT Plus de 200 exercices, vos routines personnalisées, vos séances libres, votre minuteur de récupération et l'historique complet de votre pratique. Une application rapide, lisible entre deux séries, qui vous laisse vous concentrer sur l'essentiel : soulever. Que vous débutiez ou que vous cherchiez à franchir un palier, Kalos vous donne ce qui manque à la plupart des pratiquants : un cap, une mesure et une raison de revenir. Téléchargez Kalos, découvrez votre rang de départ et commencez votre ascension. Politique de confidentialité : https://kalosworkout.eu/privacy Conditions d'utilisation (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Kalos at 15.1 against Basalt Lab's 17.0. On price, ads, in-app purchases and device support 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
Both are free to download. Basalt Lab sells 2 in-app purchases, starting at $7.99 per month and Kalos sells 1 in-app purchase, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Basalt Lab | Kalos |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 98 MB | 91 MB |
| Age rating | 12+ | 4+ |
| Developer | Otia LTD | Zenyt |
In-app purchases
Basalt Lab
- Basalt Lab Pro$7.991 Month
- Basalt Lab Pro7 Days trial$49.991 Year
Kalos
- Kalos Premium Monthly7 Days trial$6.991 Month









