Volym vs Compound Theory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Volym
This strength training log automates weight and rep targets for each workout, ensuring consistent progress. It calculates warm-ups, tracks personal records, and allows for fast logging of sets and supersets. Log from your wrist with Apple Watch integration.
- Auto progression for weight and reps
- Calculated warm-up sets
- Apple Watch logging
- Progress charts and personal records
- Fast workout editor
- Session and routine planning
- Plate calculator
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Stop guessing what to lift. Volym tells you. Volym is a strength training log that does the maths for you. Finish your sets and it sets your next weight and rep targets, so every session is a small step forward instead of a repeat of last week. AUTO PROGRESSION – ALWAYS FREE Hit the top of your rep range and Volym bumps the weight. Fall short and it holds. Pick a goal like hypertrophy and the targets follow. WARM-UPS, CALCULATED Warm-up sets are worked out from your working weight, so you're ready for the heavy sets without the mental arithmetic. APPLE WATCH Log reps, run rest timers and time your planks and carries from your wrist. Your phone can stay in the bag. PROGRESS YOU CAN SEE Charts for every lift: heaviest weight, session volume and personal records. Track body weight and measurements right next to your lifts. FAST LOGGING A clean workout editor built for the gym floor. Sets, supersets and notes in a few taps. PLAN AHEAD Build sessions and routines in advance, so you always know what's next. YOUR DASHBOARD Weekly volume, week streaks and total time trained, at a glance. PLATE CALCULATOR Enter a weight and see exactly which plates go on the bar. No feeds. No gimmicks. Just the tools to stay consistent and keep getting stronger. Privacy Policy: https://volymapp.com/privacy-policy Terms and conditions: https://volymapp.com/terms-and-conditions
Compound Theory
This strength training tracker offers a vast library of proven workout programs and allows users to build their own custom routines. It provides insights into muscle recovery, strength standards, and integrates with Apple Health for a comprehensive view of fitness progress.
- Extensive library of pre-built strength programs
- Customizable workout routine builder
- Muscle recovery tracking with visual indicators
- Strength standards comparison
- Apple Health integration for recovery insights
- One-tap set completion and auto-progression
- Apple Watch workout tracking
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Compound Theory is a no-nonsense strength training tracker built for lifters who already know what they're doing, and the ones who want to. PROVEN PROGRAMS, BUILT IN Linear: StrongLifts 5×5, Starting Strength, Greyskull LP, GZCLP, Reddit PPL, Reddit Basic 3×5. Intermediate: Madcow 5×5, Texas Method. Peaking: Candito 6 Week, Juggernaut Method 2.0. Full 5/3/1 family: Original, BBB, FSL, SSL, Triumvirate, Monolith, Leader/Anchor, Beginner, 2 day Minimalist. Power/hypertrophy: PHUL, PHAT, nSuns 4 Day, Jacked & Tan 2.0, Powerbuilding Template, Juggernaut Base. Not sure where to start? The Find Your Program quiz picks the best match for your goal, experience, and schedule in under a minute. MUSCLE FRESHNESS Every exercise row carries a recovery dot, green, yellow, or red, so you know which movement patterns are ready for another hard session. Tap in for a per pattern recovery bar, last loaded time, and the workouts that contributed. STRENGTH STANDARDS See where your Squat, Bench, Deadlift, and Overhead Press rank against the rest of the lifting population, adjusted for your bodyweight, age, and sex. Per lift progress bars show how far you are from Intermediate, Advanced, or Elite. RECOVERY INSIGHTS Connect Apple Health and the app watches your HRV, sleep, and recent training load. When recovery looks reduced, a banner on Home suggests a lighter day. Every past alert stays in Progress so you can scroll back through the data that drove every recommendation. LIFT, LOG, DONE One tap set completion with a crisp haptic click. Auto calculated warmups. Plate math that respects the plates you actually own. Rest timer that auto starts when you finish a set. Weight auto progresses after every workout. Supersets drawn as paired cards with rest pause timer behavior. BUILD YOUR OWN Have a program the presets don't cover? Custom Programs now lets you design anything from a flat StrongLifts-style linear plan to a multi-week wave with per-set percentages of your training max, AMRAP markers, and auto TM advancement on 5+ rep finishers. Nest LEVIASUNS, an nSuns variant, or your own coach's block in minutes. Export the whole program (or a program + history bundle) as a single .ironprog file, share it, and import on another device without losing a set. BODYWEIGHT, DONE RIGHT Pull ups and dips accept signed weights (+25 for a belt plate, −40 for band assistance) and factor your real bodyweight into total volume. Push ups and planks just track reps. WATCH + HEALTH Track workouts on Apple Watch: start a set on your wrist, see the rest timer tick down, end the workout without pulling out your phone. Optional auto RPE suggestion from heart rate recovery (beta). Workouts sync to Apple Health as strength training sessions. Body weight, heart rate, and calories flow both ways. STREAK THAT UNDERSTANDS YOUR SCHEDULE A 3×/week program means Tuesday is a rest day, not a gap. Your streak only breaks when you miss a scheduled session. iCLOUD SYNC + IMPORT Your workouts live on every device signed into your iCloud account. Coming from StrongLifts, Strong, or a spreadsheet? One tap CSV import brings years of workouts with you. MAKE IT YOURS Seven themes. 29 app icons including Terminal, Space, Matrix, Holographic, Neon, Gold, Carbon Fiber, Blueprint, and more. WHAT YOU WON'T FIND No social feed. No trainer DMs. No push notifications begging you to open the app. No dark pattern paywalls gating basic set tracking. Pro unlocks advanced analytics (Muscle Freshness, Strength Standards, Recovery Insights), every program template, premium themes, and alternate icons. Available as a monthly or yearly subscription, or as a one-time lifetime unlock. Built for the barbell. Designed for the people who lift it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://compoundtheory.x90sky.sh/privacy
Screenshots
Verdict
The clearest difference is update cadence: Compound Theory at every 6 days against Volym's every 6 weeks. Volym's advantage is iOS requirement (15.0 vs 17.0). On price, rating, 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. Volym sells 2 in-app purchases, starting at $2.99 per month and Compound Theory sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Volym against 5.0 for Compound Theory. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Volym ships an update every 6 weeks, Compound Theory every 6 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Volym | Compound Theory |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 127 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Nielsen | Shane Young |
Customer experience
Volym
Compound Theory
In-app purchases
Volym
- Volym Pro Monthly$2.991 Month
- Volym Pro Annually$29.991 Year
Compound Theory
- Compound Theory Pro7 Days trial$3.991 Month
- Compound Theory Pro7 Days trial$29.991 Year
- Compound Theory Pro$99.99









