Comparison

Forge 5/3/1 vs Compound Theory

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

Head to head
About

Forge 5/3/1

This powerlifting app helps users follow the Wendler 5/3/1 Boring But Big program with personalized workouts. It offers detailed tracking, history, and gym-ready features, with optional premium upgrades for advanced customization and data management.

Highlights
  • Personalized 5/3/1 BBB workouts
  • Classic Wendler progression
  • Log sets, reps, and weights
  • Volume and estimated 1RM tracking
  • Offline functionality
  • Plate calculator
  • Customizable training percentages
Features
Read full description

Forge 531 is your powerlifting companion for Wendler 5/3/1 Boring But Big—built for lifters who want precision, customization, and privacy. No ads-driven onboarding and no required account. PROGRAM & WORKOUTS (included) • Enter one-rep maxes for squat, bench press, deadlift, and overhead press—Forge generates personalized 5/3/1 BBB sessions from your training maxes • Classic Wendler progression with Boring But Big assistance work • Four-week cycles including deload; intuitive week navigation and cycle management • Metric or imperial units—switch anytime in Settings TRACKING & HISTORY (included) • Log sets, reps, and weights for every workout • Volume totals (weight × reps) • Estimated 1RM from AMRAP sets (Brzycki) • Full history with analytics so you can see progress over time GYM-READY DESIGN (included) • Optional keep screen awake during sessions • Dark theme suited to dim floors • Fast movement between weeks and workout detail PRIVACY & SIMPLICITY (included) • No account—ever. Nothing to register; nothing you must log into later • Your data stays on your device—not tied to a Forge cloud profile • Works offline for everyday training PREMIUM — SMART PLATES & LOADS (14-day free trial, then one-time purchase — no subscription) • Plate calculator — visual plate combinations for any target weight • Plate settings — barbell weight and inventory that match your gym • Full calculator access lines up with your metric/imperial choice once Premium is active PREMIUM — TRAINING CONTROL (same trial / purchase model) • Training max % adjustments — tune percentages off Wendler defaults • Progressions customization — adjust weekly progression percentages • Warm-up sets — bar-only and configurable percentage warm-ups before working sets (deload options in Settings) PREMIUM — DATA PORTABILITY (Not included in the free trial — unlocks with Premium purchase) • Import/export — backup and restore workout history via CSV HOW PREMIUM WORKS New users receive a 14-day trial for most Premium features listed above.** Import/export requires a Premium purchase and is not part of the trial.** After the trial ends, Premium remains available as a one-time purchase—no subscription.

About

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.

Highlights
  • 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
Features
Read full description

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

Forge 5/3/14 screens
Compound Theory4 screens

Verdict

The call

The clearest difference is update cadence: Compound Theory at every 4 days against Forge 5/3/1's every 3 weeks. Forge 5/3/1's advantage is iOS requirement (13.0 vs 17.0). On price, rating, review sentiment and ratings volume 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. Forge 5/3/1 sells 1 one-off in-app purchase 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Forge 5/3/1 against 5.0 for Compound Theory. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Forge 5/3/1 ships an update every 3 weeks, Compound Theory every 4 days. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 8 level
Forge 5/3/1 versus Compound Theory: the parameters behind the verdict, then further details
ParameterForge 5/3/1Compound Theory
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS13.0 — better17.0
Further details — not scored
Size26 MB16 MB
Age rating12+4+
DeveloperDev IT Digital LLCShane Young

Customer experience

Forge 5/3/1

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Compound Theory

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Forge 5/3/1

One-time1
  • Premium Features$4.99
3 purchases

Compound Theory

Subscriptions2
  • Compound Theory Pro7 Days trial$3.991 Month
  • Compound Theory Pro7 Days trial$29.991 Year
One-time1
  • Compound Theory Pro$99.99

Questions

Is Forge 5/3/1 free?
Forge 5/3/1 is free to download, with in-app purchases available.
Is Compound Theory free?
Compound Theory is free to download, with in-app purchases available.
Which has better reviews, Forge 5/3/1 or Compound Theory?
Forge 5/3/1 and Compound Theory are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Forge 5/3/1 or Compound Theory have ads?
Neither Forge 5/3/1 nor Compound Theory shows ads.
Which is updated more often, Forge 5/3/1 or Compound Theory?
Forge 5/3/1 ships an update every 3 weeks, and Compound Theory every 4 days. Most recently, Forge 5/3/1 was updated on October 2, 2026 and Compound Theory on October 14, 2026.

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