Comparison

Workout Performance Diary vs kach

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

Head to head
About

Workout Performance Diary

Log your gym workouts with detailed progress tracking. Build custom plans, monitor your stats like volume and one-rep max, and stay consistent with calendar tracking. Integrates with Apple Health for a comprehensive fitness overview.

Highlights
  • Custom workout plan creation
  • Calendar and streak tracking
  • Built-in exercise library
  • Detailed charts and stats
  • Workout history and trends
  • Rest timer
  • Apple Health integration
Features
Read full description

A convenient and user-friendly workout log with progress tracking. Strength training, fitness, calisthenics, or home workouts of any kind. Build better habits, stay consistent, and see real progress over time. - Create custom workout plans - Calendar and streak tracking - Built-in exercise library - Add your own exercises with custom categories - Charts & stats: total training volume, one-rep max, sets, reps - Volume, reps, and workout trends - Exercise-specific charts & stats: total volume, max weight, one-rep max, max reps, duration - Workout history - Rest timer - Apple Health integration - Body weight tracking - Data export/import - Dark and light themes The app is evolving β€” I’m looking forward to your suggestions and feedback. Thank you! Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy https://rubymedia.tech/workoutlogging/policy

About

kach

Features
Read full description

kach is a no-nonsense gym tracker for people who count reps, not followers. PLAN ANY ROUTINE β€’ Start from a proven template or build your own split β€’ Name your days, set weight, reps and rest your way β€’ 1,200+ exercises, plus your own custom movements LOG EVERY SET, FAST β€’ Sets pre-filled from your plan β€” tap to confirm β€’ Supersets, drop sets, warm-ups and AMRAP, all first-class β€’ Swap an exercise if a machine's taken, or add one on the fly β€’ Built-in plate calculator for any bar and the plates you own WATCH YOUR STRENGTH CLIMB β€’ Per-exercise history, estimated 1RM trends and personal records β€’ Weekly volume, calories and live heart rate β€’ Body measurements with progress photos and videos ON YOUR WRIST β€’ Apple Watch companion: current set, rest timer and heart rate β€’ Log a full workout without your phone YOURS, ON YOUR DEVICE β€’ No sign-up and no cloud lock-in β€” your training stays on your phone β€’ Syncs with Apple Health and Apple Watch β€’ Works offline kach is free to download and use β€” no subscription. A short ad plays before each workout starts.

Screenshots

Workout Performance Diary4 screens
kach4 screens

Verdict

The call

The clearest difference is ads: Workout Performance Diary at none against kach's shown. kach's advantage is update cadence (every 2 days vs every 9 days) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Workout Performance Diary sells 2 in-app purchases, starting at $1.99 per month and kach sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Workout Performance Diary ships an update every 9 days, kach every 2 days. Both last shipped on October 25, 2026.

Scorecard4 real differences Β· 4 level
Workout Performance Diary versus kach: the parameters behind the verdict, then further details
ParameterWorkout Performance Diarykach
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 9 daysEvery 2 days β€” better
AdsNo β€” betterYes
In-app purchasesYesYes
MonetizationFreemiumβ€”
DevicesiPhoneiPhone, iPod, Apple Watch β€” better
Requires iOS18.015.0 β€” better
Further details β€” not scored
Size49 MB100 MB
Age rating4+4+
DeveloperDenis RomantsovBoris Varshavskii

In-app purchases

2 purchases

Workout Performance Diary

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$9.991 Year
1 purchases

kach

One-time1
  • Remove ads$7.99

Questions

Is Workout Performance Diary free?
Workout Performance Diary is free to download, with in-app purchases available.
Is kach free?
kach is free to download, with in-app purchases available.
Do Workout Performance Diary or kach have ads?
kach shows ads; Workout Performance Diary does not.
Which is updated more often, Workout Performance Diary or kach?
Workout Performance Diary ships an update every 9 days, and kach every 2 days. Most recently, Workout Performance Diary was updated on October 25, 2026 and kach on October 25, 2026.

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