Comparison

Basalt Lab vs Tazar

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

Head to head
About

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.

Highlights
  • 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
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: โ€ข Manual: log a set in 2 taps and get back under the bar. The rest timer is there when you want it. โ€ข Lab (Pro): validate with a swipe and the rest rolls into the next set. Your phone fades into the background. YOUR SESSION, WITHOUT FRICTION โ€ข Your previous session replayed set by set (Pro): you know exactly what to beat today, and today's load wins when it's heavier. โ€ข Apple Watch: log from your wrist with the Digital Crown, phone stays in the bag. โ€ข Live Activities + Dynamic Island: your rest and your next set stay in sight on the Lock Screen, in both modes. โ€ข 370+ exercises, supersets (Pro), swap an exercise mid-session. โ€ข 52 ready-made workouts, ready to start (12 free): you pick, the app runs it. PROOF YOU'RE MOVING โ€ข 48 statistics (14 included, +34 with Pro) built around the only question that matters: are you actually progressing? โ€ข Plateau detection: know it's stalling before you lose weeks to it. โ€ข Your 1RM projected at 3 and 6 months: see where you're headed, not just where you've been. โ€ข Push/Pull ratios, strength radar, an overtraining alert when your volume runs past your average. โ€ข Regularity heatmap, streaks and trophies: your consistency finally shows. โ€ข Your session heart rate (Apple Watch): the curve on your recap, your average, your max and your recovery. โ€ข Add past sessions to your calendar (Pro): your history stays complete, even when life gets in the way. โ€ข 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. โ€ข Monthly: $7.99/month. โ€ข 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

About

Tazar

Features
Read full description

Tazar is your strength-training coach in your pocket: a custom workout plan, built for you in seconds, that evolves with every cycle. Answer a few questions โ€” goal, level, available days, equipment โ€” and Tazar builds it all: sessions, exercises, sets, guided loads, periodization and deload weeks included. FREE, NO ACCOUNT - 1300+ exercises with demo videos - Full training log: sets, weights, reps, rest, notes - Build your own routines by hand, no limits - Stats and progress history TAZAR PRO โ€” YOUR PERSONAL COACH - Generate unlimited programs, tailored to your goal - Automatic progression and periodization - Smart deload weeks - Muscle heatmap: see your volume per muscle - Bodyweight projection - All future features included โ†’ Try it free for 7 days. APPLE WATCH Keep the essentials on your wrist: current set, rest timer, quick logging, heart rate, calories and steps. YOUR DATA IS YOURS Tazar works with no account and no ads. Your data stays on your device and syncs through your private iCloud โ€” which we can never access. โ€” Tazar Pro is available as a monthly or yearly subscription (with a 7-day free trial) or as a one-time lifetime purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://taz1313.github.io/tazar-pages/privacy.html

Screenshots

Basalt Lab4 screens
Tazar4 screens

Verdict

The call

Basalt Lab and Tazar are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Basalt Lab sells 2 in-app purchases, starting at $7.99 per month and Tazar sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

ScorecardNo meaningful differences
Basalt Lab versus Tazar: the parameters behind the verdict, then further details
ParameterBasalt LabTazar
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumโ€”
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch โ€” better
Requires iOS17.017.0
Further details โ€” not scored
Size98 MB223 MB
Age rating12+4+
DeveloperOtia LTDMoutaz Abdelhadey

In-app purchases

2 purchases

Basalt Lab

Subscriptions2
  • Basalt Lab Pro$7.991 Month
  • Basalt Lab Pro7 Days trial$49.991 Year
3 purchases

Tazar

Subscriptions2
  • Tazar Pro โ€“ Monthly7 Days trial$9.991 Month
  • Tazar Pro โ€“ Yearly7 Days trial$59.991 Year
One-time1
  • Tazar Pro โ€“ Lifetime$99.99

Questions

Is Basalt Lab free?
Basalt Lab is free to download, with in-app purchases available.
Is Tazar free?
Tazar is free to download, with in-app purchases available.
Do Basalt Lab or Tazar have ads?
Neither Basalt Lab nor Tazar shows ads.
Which is updated more often, Basalt Lab or Tazar?
Basalt Lab ships an update weekly, and Tazar weekly. Most recently, Basalt Lab was updated on October 8, 2026 and Tazar on October 15, 2026.

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