Comparison

KILO vs Syntax

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

Head to head
About

KILO

Features
Read full description

KILO is a clean, native strength training app for logging workouts quickly, staying consistent, and seeing your progress clearly over time. Start a workout in seconds, follow your plan, track every set, and review your training history without clutter. KILO is built for lifters who want a focused tracker, not a social network or a content feed: just your training data, fast logging, and clear progress insight. With KILO, you can: • Log sets quickly with weight, reps, set types, notes, and rest timers • Create workout templates and reuse past sessions • Build your exercise library with 180+ built-in exercises, favourites, aliases, and custom movements • Track workout history, personal records, streaks, muscle volume, progression charts, and training insights • Follow active workouts with Live Activities and Dynamic Island • Configure weight units, experience level, rest defaults, and data sync preferences KILO Pro unlocks: • Apple Watch workout logging with quick start, templates, rest timers, and heart rate sync • Advanced analytics, long-term charts, strength goals, smart target suggestions, and fractional volume settings • Unlimited workout templates and custom exercises • KILO Account sync for workouts, templates, settings, and custom exercises across devices • Timer controls for Live Activity and Dynamic Island • On-device AI workout summaries on supported Apple Intelligence devices KILO keeps your training data yours. No account is required to use the core app, and your workouts stay on your device unless you choose to sync them. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.

Screenshots

KILO4 screens
Syntax4 screens

Verdict

The call

The clearest difference is iOS requirement: Syntax at 16.0 against KILO's 26.0. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

Scorecard1 real difference · 8 level
KILO versus Syntax: the parameters behind the verdict, then further details
ParameterKILOSyntax
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 daysEvery 3 days
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size26 MB5 MB
Age rating4+4+
DeveloperReece CharltonYuanjia Su

In-app purchases

2 purchases

KILO

Subscriptions2
  • KILO Pro Monthly$3.991 Month
  • KILO Pro Yearly7 Days trial$29.991 Year
2 purchases

Syntax

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

Questions

Is KILO free?
KILO is free to download, with in-app purchases available.
Is Syntax free?
Syntax is free to download, with in-app purchases available.
Do KILO or Syntax have ads?
Neither KILO nor Syntax shows ads.
Which is updated more often, KILO or Syntax?
KILO ships an update every 3 days, and Syntax every 3 days. Most recently, KILO was updated on October 6, 2026 and Syntax on October 22, 2026.

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