Comparison

Simple Workout Tracker vs Kalbox

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

Head to head
About

Simple Workout Tracker

This strength training log helps gym enthusiasts and bodybuilders track workouts with ease. It offers automatic 1RM calculations, advanced set tracking for supersets and tri-sets, and detailed progress graphs to measure gains and crush fitness goals.

Highlights
  • Automatic 1RM calculation
  • Advanced set tracking (supersets, tri-sets)
  • Comprehensive progress tracking
  • Color-coded workout calendar
  • In-depth analytics and graphs
  • Dark mode and rest timer
Features
Read full description

Take Your Strength Training to the Next Level! Looking for the ultimate strength training log? Whether you're a gym enthusiast, bodybuilder, or personal trainer, this app is designed to help you track your workouts with ease and precision. Built for serious lifters, this app makes recording your workouts seamless—so you can focus on lifting, not logging. With automatic 1RM (one-rep max) calculations, advanced tracking for supersets, tri-sets, and giant sets, plus a powerful training volume graph, you'll have everything you need to measure progress and crush your fitness goals. Why You'll Love This App: - Quick & Easy Logging: Intuitive UI designed for fast workout tracking. - Automatic 1RM Calculation: Instantly estimate your one-rep max for smarter training. - Advanced Set Tracking: Effortlessly log supersets, tri-sets, giant sets, warm-ups, and drop sets. - Copy & Paste Workouts: Save time by reusing set details from previous sessions. - Comprehensive Progress Tracking: Monitor your total volume and max 1RM over time. - Multiple Recording Methods: Log training in various formats, including reps, weight, time, and distance. - Color-Coded Calendar: Easily visualize your muscle group workouts at a glance. - In-Depth Analytics: Graphs for total training volume and muscle group trends. - Dark Mode & Rest Timer: Optimize your workout experience. - Customizable Metrics: Switch between kg/lbs to match your training style. - Monthly Progress Reports: Stay motivated with data-driven insights. Upgrade to Premium: - Ad-Free Experience: Stay focused with zero distractions. - Enhanced Graph Analysis: Gain deeper insights into your training trends. If you're serious about weightlifting, bodybuilding, or fitness training, this is the app for you. Download now and start making real gains!

About

Kalbox

Features
Read full description

カメラでホワイトボードを撮影するだけで、AIがWOD(Workout of the Day)の内容を自動解析。CrossFitコーチ・アスリート向けのワークアウト記録アプリです。 【主な機能】 ・ ホワイトボード写真をAIが自動解析 カメラで撮影するとAIがWODの内容をすべて読み取ります。ムーブメント名・ラウンド数・タイムキャップまで自動抽出。手打ち入力は不要です。 ・ 自分のスコアを簡単記録 AIが読み取ったWODに、自分のタイム・ラウンド数・重量をすぐ入力。RX・スケーリングの選択もスムーズで、ムーブメントごとに使用重量を記録できます。 ・ ワークアウト履歴の一覧管理 過去のWODをすべて写真付きで管理。ムーブメント名で検索すれば、特定の種目が含まれたワークアウトをすぐに絞り込めます。 ・ ムーブメントごとの成長グラフ スラスター・デッドリフトなど各ムーブメントの重量・タイム推移をグラフで可視化。自分のPR(パーソナルレコード)の変化が一目でわかります。 ・ボックス(ジム)の管理 よく行くボックスを登録しておけば、ログ入力時にワンタップで選択できます。 【こんな方におすすめ】 ・CrossFitボックスのコーチ・インストラクター ・WODの記録を丁寧に残したいアスリート ・RX・スケーリングを区別して管理したい方 ・自分の成長をデータで確認したい方 【使い方】 1. ホワイトボードを撮影(またはライブラリから選択) 2. AIが自動でWOD内容を解析 3. 内容を確認・編集して自分の結果を入力 4. 保存して完了 — 履歴に積み上がります 【プライバシー・セキュリティ】 Apple Sign-inで安全にログイン。写真・ワークアウト記録はあなただけのプライベートデータとして管理されます。他のユーザーのデータが見えることはありません。

Screenshots

Simple Workout Tracker4 screens
Kalbox4 screens

Verdict

The call

The clearest difference is in-app purchases: Kalbox at none against Simple Workout Tracker's 2. Kalbox also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Simple Workout Tracker sells 2 in-app purchases, starting at $2.99 per month. Kalbox asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Workout Tracker ships an update fortnightly, Kalbox every 2 weeks. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
Simple Workout Tracker versus Kalbox: the parameters behind the verdict, then further details
ParameterSimple Workout TrackerKalbox
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings2 — better—
Update frequencyFortnightlyEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.617.0 — better
Further details — not scored
Size66 MB5 MB
Age rating4+4+
DeveloperDAIKI YUASAKALBI LIMITED LIABILITY COMPANY

In-app purchases

2 purchases

Simple Workout Tracker

Subscriptions2
  • MUSCLY PREMIUM1 Month trial$2.991 Month
  • Premium Plan1 Month trial$24.991 Year
None

Kalbox

No in-app purchases

Questions

Is Simple Workout Tracker free?
Simple Workout Tracker is free to download, with in-app purchases available.
Is Kalbox free?
Kalbox is free to download, with no in-app purchases.
Do Simple Workout Tracker or Kalbox have ads?
Simple Workout Tracker shows ads; Kalbox does not.
Which is updated more often, Simple Workout Tracker or Kalbox?
Simple Workout Tracker ships an update fortnightly, and Kalbox every 2 weeks. Most recently, Simple Workout Tracker was updated on October 15, 2026 and Kalbox on October 21, 2026.

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