Basalt Lab vs Constance
Price, ratings, monetisation and update history for both apps, side by side ā 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
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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 a few taps and get back under the bar. ⢠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: dial in reps and weight with the Digital Crown and log the set from your wrist, phone stays in the bag. ⢠Live Activities + Dynamic Island: your session stays in sight on the Lock Screen; in Lab mode, your rest and your next set too. ⢠500 exercises, supersets (Pro), swap an exercise mid-session. ⢠113 ready-made workouts, sorted by goal and ready to start (41 free): you pick, the app runs it. PROOF YOU'RE MOVING ⢠47 statistics (14 included, +33 with Pro) built around the only question that matters: are you actually progressing? ⢠Plateau detection (Pro): know it's stalling before you lose weeks to it. ⢠Your 1RM projected at 3 and 6 months (Pro): 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 (Pro). ⢠Regularity heatmap, streaks and trophies: your consistency finally shows. ⢠Your session heart rate (Apple Watch): the curve, your average and your max on your recap, plus your recovery with Pro. ⢠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 (4 exercises per session), Manual mode, Watch, Live Activities, widget, trophies. Pro (monthly, or annual 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. ⢠Monthly: $7.99/month. ⢠Annual: $49.99/year, i.e. $4.17/month. The annual plan starts with a 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
Constance
This AI-powered coach helps you achieve your health and fitness goals with personalized calorie and macro tracking. It adapts to your lifestyle, offering flexible plans and support to maintain consistency without guilt. Features include workout planning, recipe sharing, and community interaction.
- AI-powered calorie and macro tracking
- Flexible meal logging (AI, photo, voice, scan)
- Adaptive daily targets
- Personalized training plans and exercise library
- Recipe creation and sharing
- Community support and friend interaction
- Apple Health integration
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Constance is your AI-powered nutrition and fitness coach. Reach your goals without overthinking them, and without giving everything up after one slip. REACH YOUR GOALS - Calories and macros (protein, carbs, fat) calculated from your profile and your goal: lose weight, build muscle or maintain. - Log a meal in seconds: describe it to the AI, photograph it, dictate it, or scan a barcode. - One clear daily target, updated in real time. A COACH THAT FITS REAL LIFE Ate too much, gave in to fast food, skipped a session, gained weight? Don't panic. Constance looks at what happened, offers an alternative and rebalances your plan to keep you on track. No more guilt. YOUR TRAINING PLAN - Structured sessions laid out in a simple calendar. - Plan, add and tick off your workouts. - An illustrated exercise library so you never have to guess a movement. - Track your consistency month after month. RECIPES, YOURS AND THEIRS - Create your own recipes and see their calories and macros at a glance. - Discover other people's and copy them into your book: the original author always stays credited. A COMMUNITY THAT KEEPS YOU GOING - Share your meals and workouts, cheer your friends on, get inspired by the World feed and the weekly Top. - Follow people who look like you: Constance suggests profiles with a build and goals close to yours. - Private messaging between friends: chat, send a photo, a workout or a recipe in one tap. - Reporting, blocking and moderation everywhere: here, you make progress safely. CONNECTED TO APPLE HEALTH - Today's steps appear right above your calories. - Workouts recorded in the Fitness app or on your smartwatch are added to your plan automatically and counted in the calories you burn. - Read-only, and you switch it on whenever you want from Privacy. WATCH YOUR PROGRESS - Weight trend, before/after photos, consistency calendar. - Smart summaries that show you what actually works for you. WHY CONSTANCE? Because consistency beats perfection. We help you keep going over the long run, with intelligence and kindness. SUBSCRIPTIONS Constance is free to use. AI features and advanced insights are included in an auto-renewing subscription, monthly or yearly, whose price is shown in the app before any purchase, in your currency. Payment is charged to your Apple Account at confirmation. The subscription renews automatically unless canceled at least 24 hours before the end of the current period; you can manage it and turn off renewal at any time in your Apple Account settings. --- Privacy Policy: https://constance.cloud/confidentialite-en.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Constance at 15.0 against Basalt Lab's 17.0. On price, review sentiment, update cadence and ads there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Basalt Lab sells 2 in-app purchases, starting at $7.99 per month and Constance sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Basalt Lab ships an update every 3 days, Constance every 5 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Basalt Lab | Constance |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Update frequency | Every 3 days ā better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod ā better |
| Requires iOS | 17.0 | 15.0 ā better |
| Further details ā not scored | ||
| Size | 139 MB | 18 MB |
| Age rating | 12+ | 4+ |
| Developer | Otia LTD | Hedi Minvielle-debat |
Customer experience
Basalt Lab
Constance
In-app purchases
Basalt Lab
- Basalt Lab Pro$7.991 Month
- Basalt Lab Pro3 Days trial$49.991 Year
Constance
- Constance Essential$1.991 Month
- Constance AI$2.991 Month
Questions
Is Basalt Lab free?
Is Constance free?
Do Basalt Lab or Constance have ads?
Which is updated more often, Basalt Lab or Constance?
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