Scientific Coaching vs SixMaxx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scientific Coaching
This platform connects athletes with independent coaches for strength training. It offers tools for both to manage programming, track progress, and build training businesses. Athletes can find coaches by specialty and follow structured workouts, while coaches can create templates, schedule sessions, and monetize their expertise.
- Coach discovery by specialty and location
- Structured workout programming and logging
- Max lift tracking
- Template library for workout creation
- Group scheduling and management
- Monetize coaching services
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SCI-CO is the strength training platform that connects serious lifters with independent coaches — and gives both sides the tools they actually need. Whether you're chasing a new PR, programming for a team, or building your coaching business, SCI-CO replaces the spreadsheets, group chats, and PDFs with one structured app. — FOR ATHLETES — • Find your coach. Browse coaches by specialty — Powerlifting, Bodybuilding, CrossFit, Strength & Conditioning, Sports Performance, General Fitness — filtered by location and price tier. • Follow real programming. Workouts land on your calendar with sets, reps, and target loads. Tap a day, train, and log it. • Track every max. Your 1RMs live in one place and update as you progress. • Build on your own. Not ready for a coach? Create your own workouts, save templates, and program your own training. • See the trend. Workout history and completion stats keep you honest. — FOR COACHES — • Build a template library. Create workouts by muscle group, category, and difficulty. Reuse them across athletes and groups. • Schedule with one tap. Date-driven assignment lets you push a workout to an entire group on the day it should happen. • Run multiple groups. Personal clients, team athletes, online cohorts — manage them side by side with completion tracking. • Sell your programming. Set a price tier and billing interval. Monetize your expertise without juggling Stripe, Sheets, and DMs. • Stay in the loop. See who completed what, who's falling behind, and who's ready for more volume. — WHY SCI-CO — Most fitness apps are built for solo users or for big-box gyms. SCI-CO is built for the in-between: the independent coach with 5–500 athletes, and the lifter who wants someone in their corner without paying for in-person training. Everything in the app is designed around the actual coach-athlete loop: program, assign, log, review, repeat. — FEATURES — • Coach discovery with specialty, location, and price filters • Group subscriptions with flexible billing • Muscle-group-aware workout builder • Date-driven assignment flow • Max tracker for all standard lifts • Workout history and completion stats • Sign in with Apple, Google, or email • Built for iPhone with a fast, dark, no-nonsense UI — PRO — Athlete Pro unlocks unlimited workout logging, full max history, and AI-generated programming. Coach Pro unlocks unlimited templates, group scheduling, and athlete sales. A free trial is available. Subscriptions auto-renew until cancelled in your Apple ID settings. Train smarter. Coach better. SCI-CO. EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SixMaxx
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Stop training the abs you already have. SixMaxx scores six ab zones from a single photo, finds the one holding you back, and builds your core training, nutrition targets and weekly check-ins around it. AI AB SCAN • One front-facing photo scores Upper Abs, Lower Abs, Obliques, Deep Core, Symmetry and V-Taper from 0–100 • See your overall core score, an abs-type read (2-pack to 8-pack) and a body-fat estimate • A color-coded anatomy map shows exactly which zone is lagging • Rescan weekly and compare your first photo to your latest with a side-by-side slider A PLAN BUILT ON YOUR WEAKEST ZONE • Programmed sessions that hit your focus zone hardest, with warm-up, main circuit and cool-down • Training phases that progress week to week — base, build, push and deload • 20+ core moves with clear demo images, form cues and a guided workout player with rep counter and timers • Home or gym, 5-minute quick hits to full sessions, plus multi-day challenges NUTRITION FOR VISIBLE ABS • Daily calorie and protein targets calculated from your body and goal • Snap a meal photo and get calories and macros for every item on the plate • Or just say what you ate — voice logging turns it into a meal entry AI COACH • Ask anything about training, food, recovery or your scans • Answers use your own scores, targets and training phase STAY CONSISTENT • Streaks with a missed-day grace week, trophies and milestones • Recovery checklist for rest days PRIVATE BY DESIGN • No sign-up: an anonymous account, no email or name required • Your plan, history and photos are stored on your iPhone • Photos are analyzed and not kept on our servers; delete everything anytime in Settings SUBSCRIPTION SixMaxx Pro unlocks the full plan, scans, coach and nutrition tools. Choose weekly or yearly. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Scores, body-fat numbers and projections are AI visual estimates for fitness tracking, not medical measurements or advice. Consult a doctor before starting a new exercise or nutrition program. For adults 18+. Terms of Use: https://sixmaxx-6eb4c.web.app/terms Privacy Policy: https://sixmaxx-6eb4c.web.app/privacy
Screenshots
Verdict
The clearest difference is update cadence: Scientific Coaching at every 6 days against SixMaxx's every 3 months. Scientific Coaching also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, ads and in-app purchases 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. Scientific Coaching sells 4 in-app purchases, starting at $9.99 per month and SixMaxx sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Scientific Coaching ships an update every 6 days, SixMaxx every 3 months. Both last shipped on October 31, 2026.
| Parameter | Scientific Coaching | SixMaxx |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 6 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 73 MB | 50 MB |
| Age rating | 12+ | 17+ |
| Developer | GOAT STEW LLC | Muhammed Ali Balc |
In-app purchases
Scientific Coaching
- Sci Co Athlete Pro Monthly$9.991 Month
- Sci Co Coach Pro Monthly$14.991 Month
- Sci co Athlete Pro Annual3 Days trial$79.991 Year
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- Sci Co Coach Pro Annual3 Days trial$99.991 Year
SixMaxx
- Weekly$7.997 Days
- year$29.991 Year
- SkinnyFix Pro$49.991 Year









