Stacking vs Tempo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stacking
This app helps you understand your long-term running progress and consistency. Visualize your workouts with trend charts and activity grids, set personalized goals, and gain insights into your performance. It integrates with Apple Health to track various metrics and offers customization options for your training preferences.
- Trend charts for long-term progress
- Activity grids for workout history
- Heart rate zone analysis
- Personalized fitness goal setting
- Progress tracking for multiple activities
- Insights and comparisons
- Apple Health integration
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Your Apple Watch tracks every run. But are you actually getting better? Stacking is your running companion for the long run. Understand your long-term progress, set goals that match how you train, and master the consistency that makes you a better runner. Your Workouts, Visualized - Trend Charts - Track your running progress over weeks, months, and years with clear visual comparisons - Activity Grids - See your workout history at a glance with intuitive calendar views for the week, month, and year - Heart Rate Zone Analysis - Understand the intensity of every workout with detailed 5-zone breakdowns using the proven Heart Rate Reserve method - Explore detailed run data & charts - Filter your past workouts and view detailed data for your runs, which includes effort insights, heart rate data, pace, grade adjusted pace, splits and more. Set Goals That Stick Create personalized fitness goals that match how you actually train: - Frequency - "Run 3 times a week" - Duration - "Exercise for 150 minutes a week" - Distance - "Cycle 100 km a month" - Elevation - "Gain 5,000 m this year" Track progress for any activity: running, cycling, swimming, strength training, yoga, HIIT, and more. Set weekly, monthly, or yearly targets and watch your progress build. Insights That Matter - Compare this week to last week, this month to last month, this year to last year - Filter by activity type to focus on what matters to you - Track total time, distance, and elevation gained across all your workouts - Track Resting Heart Rate, HRV, VO2 Max, Active Energy, and Cardio Recovery with clear 3-year trends from Apple Health Upgrade to Stacking Pro - Monitor your heart rate zones over time - Compare your easy pace week-to-week improvements - View your Yearly Activity progress - and more! Built for Your Preferences - Customize heart rate zones to match your training - Choose your units: kilometers or miles, meters or feet - Set your week to start on Monday or Sunday Privacy First Stacking reads directly from Apple Health. Your data stays on your device where it belongs. --- Stack your runs. Track your trends. See your progress. For terms of service: https://stackingapp.net/terms
Tempo
This app helps users track gym workouts with advanced features like voice-guided counting for Time Under Tension, muscle heat maps, and personal record tracking. It offers seamless Apple Watch integration and local data storage with export options.
- Voice-guided Time Under Tension (TUT) counting
- Seamless Apple Watch integration
- Muscle heat maps and volume tracking
- Automatic personal record tracking
- Smart rest timers with haptic feedback
- Local data storage with CSV export
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Elevate Your Training with Tempo: The Ultimate Workout Log & Gym Tracker. Whether you're a seasoned powerlifter or just starting your fitness journey, Tempo is designed to be the most powerful, intuitive, and beautiful companion for your gym sessions. Stop guessing and start progressing with data-driven insights and professional-grade tracking tools. ESTIMATE MUSCLE RECOVERY Estimate muscle fatigue and recovery times with an interactive body heatmap. Tempo tracks your 72-hour training load down to set-by-set attributes (RPE, reps, and intensity based on PRs) to show you exactly which muscles are ready to train and which need rest. (Pro) KNOW YOUR DAILY READINESS Your body doesn't perform the same every day. Tempo's new Readiness Score compares sleep, HRV, and resting heart rate to your personal baseline. Get a clear daily score and the confidence to push hard or back off. (Premium) TRACK NUTRITION & CALORIES Fuel your body for performance with the new Nutrition tab. • Calorie Budget: Tailored to your body metrics and goal (lose, maintain, or gain weight). • Barcode Scanner & Food Search: Log foods in seconds with Open Food Facts barcode scanning or custom creations. • Workout Calorie Sync: Calories burned during workouts in Tempo and Apple Health automatically expand your daily budget. • Macro Targets (Pro): Set protein, carb, and fat goals, with 7, 30, and 90-day intake trend charts. MASTER YOUR TEMPO Unlock the power of Time Under Tension (TUT). Tempo features a unique guided counting system with voice announcements, helping you control your eccentric and concentric phases for maximum muscle growth and strength. SEAMLESS APPLE WATCH INTEGRATION Leave your phone in your bag. Mirror your workout on your wrist, complete sets, and manage your rest timers directly from your Apple Watch. Your data stays perfectly in sync across all your devices. INSIGHTFUL DATA & STATISTICS Visualize your progress like never before. • Muscle Heat Maps: See exactly which muscle groups you're hitting and where you need more focus. • Volume & Frequency: Track your weekly trends with high-resolution charts. • Personal Records (PRs): Automatically celebrate your milestones and track your strength gains over time. • Advanced Analytics: Dive deep into rest time efficiency and exercise-specific trends. PROFESSIONAL TRACKING FEATURES • Comprehensive Logs: Track weight, reps, RPE, and notes for every set. • Smart Rest Timers: Automated countdowns with critical alerts and haptic feedback. • Built-in Calculators: Access 1RM, Plate Math, and BMI calculators instantly. • Template Sharing: Export your favorite routines as .tempo files to share with friends or the community. BUILT FOR YOUR LIFESTYLE • Home Screen Widgets: 13+ beautiful widgets support to keep your stats at a glance. • Body Progress Comparison: Compare side-by-side progression photos (front, side, and back views) in lbs or kg with custom measurements. • Cardio & Duration Support: Track running, cycling, swimming, and even timed holds like planks. • Local & Private: Your data is yours. Secure local storage with easy CSV and database export options. • Refreshed Design: A premium UI with new premium typography and a polished active-workout flow. Payment & Terms Payments are processed by the App Store. Subscription automatically renews unless auto-renew is turned off in your App Store Account Settings at least 24 hours before the current period ends. Terms of Service: https://tempo.progressiostudio.com/terms Privacy Policy: https://tempo.progressiostudio.com/privacy
Screenshots
Verdict
The clearest difference is rating: Stacking at 5.0 against Tempo's 4.5. Stacking also leads on update cadence (every 2 weeks vs monthly). On price, review sentiment, ratings volume and ads 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
Both are free to download. Stacking sells 3 in-app purchases, starting at $4.99 per month and Tempo sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Stacking holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Stacking ships an update every 2 weeks, Tempo monthly. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.
| Parameter | Stacking | Tempo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.5 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.4 | 16.6 — better |
| Further details — not scored | ||
| Size | 6 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeremiah Daneil de la Rouviere | PROGRESSIO STUDIO COMPANY LTD |
Customer experience
Stacking
Tempo
In-app purchases
Stacking
- Stacking Pro - Monthly$4.991 Month
- Stacking Pro - 14-day accessFree
- Stacking Pro - Lifetime Access$19.99
Tempo
- Pro Monthly$1.991 Month
- Pro Yearly7 Days trial$9.991 Year
- Pro Lifetime$12.99









