Comparison

Onyx Coach vs Trejn

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

Head to head
About

Onyx Coach

This app provides structured workout plans and a fast lifting tracker to help users achieve progressive overload and visualize strength gains. It offers pre-built routines and a custom workout builder, acting as a digital replacement for paper logs.

Highlights
  • Structured workout program library
  • Fast and flexible lifting tracker
  • Custom workout builder
  • Progressive overload visualization
  • Rest timer and plate calculator
  • Gym set tracking
Features
Read full description

Onyx Coach is the hybrid strength routine planner that combines a professional program library with a fast, flexible lifting tracker. Most apps force you to guess what to lift or give you random exercises. Onyx gives you proven structured training. • Need a Plan? Choose from 20+ prebuilt gym routines (5x5, PPL, Upper/Lower, Bodybuilding) designed for progressive overload. • Have a Plan? Use our custom workout builder to digitize your routine in seconds. TRACK WORKOUTS IN 30 SECONDS: We built the fastest gym planner on the store. No distractions, no useless videos. • Simple Logger: Record reps, sets, RPE, and weight effortlessly. • Smart History: See exactly what you lifted last time so you can beat it. • Gym Notebook Feel: The perfect replacement for spreadsheets and paper journals. PROVEN WORKOUT PROGRAMS INCLUDED Access a library of ready-to-go plans for every goal: • Strength Training: Starting Strength style progressions and 5x5. • Hypertrophy (Muscle): Push Pull Legs (PPL), Arnold Splits, and Bodybuilding focuses. • Powerlifting: Peaking programs and 1RM strength focus. MASTER PROGRESSIVE OVERLOAD: The key to growth is consistency. Onyx is a dedicated progressive overload tracker that visualizes your volume and strength gains automatically. TOOLS FOR SERIOUS LIFTERS: • Gym Set Tracker: Warm-up sets, drop sets, and failure tags. • Rest Timer: Auto-timers to keep your intensity high. • Plate Calculator: Never do gym math again. ONYX COACH PREMIUM: Unlock the full potential of your training with a Premium subscription. Onyx Coach is free to download and use, but upgrading to Premium gives you full access to all features: • Unlimited Routine Access: Unlock all 20+ specialized programs. • Advanced Analytics: Visualize your progress with detailed charts. • Unlimited Customization: Create and save unlimited custom routines. • Exclusive Tools: Full access to advanced logger settings and history. SUBSCRIPTION INFORMATION: Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Trejn

Read full description

TREJN je slovenský tréningový denník a plánovač vytvorený pre každého, kto chce mať svoj tréning a progres pod kontrolou. Zapisuj série, opakovania a váhy priamo počas tréningu. Vytvor si vlastný tréningový plán, sleduj osobné rekordy a pozri sa späť na svoju tréningovú históriu. S TREJN môžeš: • zapisovať tréningy, série, opakovania a váhy • vytvárať a upravovať vlastné tréningové plány • sledovať osobné rekordy a výkonnosť • sledovať telesnú hmotnosť a svoj progres • prezerať tréningovú históriu a kalendár • zaznamenávať RPE a RIR v pokročilom režime • importovať existujúcu tréningovú históriu z Hevy • exportovať a obnovovať svoje dáta pomocou zálohy TREJN funguje lokálne a tvoje tréningové dáta zostávajú uložené v tvojom zariadení. Žiadne zbytočnosti. Tvoj tréning. Tvoj progres.

Screenshots

Onyx Coach4 screens
Trejn4 screens

Verdict

The call

The clearest difference is in-app purchases: Trejn at none against Onyx Coach's 6. On price, update cadence, ads 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. Onyx Coach sells 6 in-app purchases, starting at $9.99 per month. Trejn asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on November 4, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 9 level
Onyx Coach versus Trejn: the parameters behind the verdict, then further details
ParameterOnyx CoachTrejn
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 daysEvery 9 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size153 MB35 MB
Age rating4+4+
DeveloperCoachito LLCRoman Janovec

In-app purchases

6 purchases

Onyx Coach

Subscriptions6
  • Onyx Coach Premium (Monthly)3 Days trial$9.991 Month
  • Onyx Coach Premium (Monthly)1 Month trial$9.991 Month
  • Premium Monthly14 Days trial$9.991 Month
Show 3 more
  • Onyx Coach Premium (Six months)14 Days trial$64.996 Months
  • Onyx Coach Premium (Yearly)3 Days trial$79.001 Year
  • Premium Yearly14 Days trial$79.001 Year
None

Trejn

No in-app purchases

Questions

Is Onyx Coach free?
Onyx Coach is free to download, with in-app purchases available.
Is Trejn free?
Trejn is free to download, with no in-app purchases.
Do Onyx Coach or Trejn have ads?
Neither Onyx Coach nor Trejn shows ads.
Which is updated more often, Onyx Coach or Trejn?
Onyx Coach ships an update every 9 days, and Trejn every 9 days. Most recently, Onyx Coach was updated on November 4, 2026 and Trejn on October 29, 2026.

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