Comparison

Syntax vs Coach Deck

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

Head to head
About

Syntax

Effortlessly log strength training workouts by typing or speaking natural language commands. This app offers an AI coach, routine creation, and progress tracking, all while prioritizing user privacy with local data storage and no ads.

Highlights
  • Natural language workout logging
  • AI coaching and routine building
  • Local data storage and privacy
  • Strava integration
  • Live Activities and Dynamic Island support
  • Offline functionality
Features
Read full description

Log your workout in seconds — just type "bench 80kg 3x8" or ask the AI coach. No tapping through menus. No manual data entry. Syntax is the fastest way to track strength training. YOUR DATA STAYS ON YOUR DEVICE No account required. No cloud sync. No tracking. No ads. Everything is stored locally in plain-text files you own and control. Built in London, designed for privacy. TYPE OR TALK TO LOG Type your sets in natural language — "squat 100kg 5x5" — and Syntax understands. Or use the built-in AI coach to log by conversation. Spend less time on your phone, more time lifting. AI COACH BUILT IN Get a personal training assistant that builds routines, answers questions, and tracks your progress. Powered by the AI model you choose (Google Gemini, OpenAI, Anthropic, and more). Your API key, your data. STRAVA INTEGRATION Export your workouts to Strava with one tap. Keep all your training data connected across platforms. LIVE ACTIVITIES & DYNAMIC ISLAND See your current workout on your Lock Screen and Dynamic Island. Track elapsed time, current exercise, and sets completed at a glance. ROUTINES & PROGRAMS Create and save workout templates. Start a session from a routine and fill in the weights as you go. Progressive overload made simple. TRAINING HISTORY & PERSONAL RECORDS Review every workout. See exercise trends, PRs, and volume over time. All your data, always accessible, always exportable. 75+ BUILT-IN EXERCISES Browse a curated exercise database with muscle groups and equipment filters. Add your own custom exercises anytime. WORKS OFFLINE No internet needed to log workouts. Train anywhere — gym basements, outdoor parks, hotel gyms. Your data is always available. FREE TO USE Core workout logging is completely free with no limits. Pro unlocks advanced AI coaching and detailed analytics. Syntax is for lifters who want a fast, no-nonsense way to track training. If you've ever logged workouts in a notes app and wished it was just a little smarter — this is it.

About

Coach Deck

Features
Read full description

CoachDeck – Train Smarter. Coach Better. Running your personal training business just got a whole lot easier. CoachDeck is the all-in-one client management app built specifically for personal trainers who want to spend less time on admin and more time doing what they love — coaching. Manage Every Client, Effortlessly Keep all your clients organized in one beautiful, searchable dashboard. Track goals, fitness levels, contact info, and active status at a glance. Add photos, notes, and personal details so you always show up prepared. Log Sessions in Seconds Record training sessions on the spot — strength, cardio, HIIT, flexibility, or sport. Add exercises with sets, reps, weight, and duration. Build a complete training history for every client without the paperwork. Track Real Progress Log body measurements and watch progress come to life in clean, visual charts. Weight trends, body fat, and key measurements are displayed over time so you and your clients can celebrate every win. Your Business at a Glance The live dashboard shows active clients, sessions this week, and recent activity — everything you need to stay on top of your business without digging through spreadsheets. Your Data, Your Control Export everything as JSON or CSV. Import from backup. Full data portability with no subscriptions, no servers, and no compromises. CoachDeck is built for iOS 18+ with SwiftUI and SwiftData — blazing fast, beautiful, and 100% local. Your client data stays on your device, always private. Download CoachDeck today and take your coaching business to the next level.

Screenshots

Syntax4 screens
Coach Deck4 screens

Verdict

The call

The clearest difference is update cadence: Syntax at every 3 days against Coach Deck's every 7 months. Syntax also leads on iOS requirement (16.0 vs 18.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Syntax sells 2 in-app purchases, starting at $3.99 per month and Coach Deck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Syntax ships an update every 3 days, Coach Deck every 7 months. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 7 level
Syntax versus Coach Deck: the parameters behind the verdict, then further details
ParameterSyntaxCoach Deck
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.6
Further details — not scored
Size5 MB9 MB
Age rating4+4+
DeveloperYuanjia SuGregory Hogan

In-app purchases

2 purchases

Syntax

Subscriptions2
  • Syntax Pro Monthly$3.991 Month
  • Syntax Pro$29.991 Year
1 purchases

Coach Deck

One-time1
  • CoachDeckOTP$19.99

Questions

Is Syntax free?
Syntax is free to download, with in-app purchases available.
Is Coach Deck free?
Coach Deck is free to download, with in-app purchases available.
Do Syntax or Coach Deck have ads?
Neither Syntax nor Coach Deck shows ads.
Which is updated more often, Syntax or Coach Deck?
Syntax ships an update every 3 days, and Coach Deck every 7 months. Most recently, Syntax was updated on October 22, 2026 and Coach Deck on October 10, 2026.

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