Comparison

TRT Plus vs Stax On

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

Head to head
About

TRT Plus

This app helps TRT and enhanced athletes meticulously track their protocols, manage medications, and analyze bloodwork with advanced pharmacokinetic modeling and tailored reference ranges for optimization.

Highlights
  • Protocol dashboard
  • Compound plotter charts
  • Bloodwork analysis
  • Medication reminders
  • Injection rotation planning
  • Inventory tracking
  • Pharmacokinetic modeling
Features
Read full description

Hormone optimization. Understood. The framework for TRT and enhanced protocols. At a glance: a protocol planner built to replace your spreadsheets and notes. Under the hood: a full hormone optimization platform with AI-powered bloodwork analysis, advanced pharmacokinetic modeling, and a knowledge base covering everything from TRT fundamentals to peptides and advanced enhanced protocols. See the full framework at trtplus.app NOT A LOGGING APP. A COMPLETE FRAMEWORK. From ordering the right bloodwork through TRT Plus pathology partners, to interpreting your results, dialing in with the Testimator™, and adjusting your protocol — every feature exists to close that loop. Order → Interpret → Dial In → Adjust → Repeat. MY PROTOCOL — Daily Dashboard: your full schedule at a glance — checkboxes, visual syringe, injection stacking — 100+ pre-configured compounds: anabolics, TRT ancillaries, peptides, GLPs, SARMs, Supp Stacks — one tap to add — Dose Titration: set automatic ramping and tapering plans for any compound — Peptide reconstitution calculator — enter dry powder, bac water calculates automatically — Pharmacokinetic charting: the only TRT app with a true multi-route PK model — injectables, orals, peptides, and testosterone cream — Peak-to-trough T level fluctuation modeling based on your exact protocol — see the swing, not just the average — Frequency Tuning: detects when your peak-to-trough swing is higher than it needs to be and suggests the most practical schedule to smooth it — Rotation Planner: set your sites once, the app forecasts the sequence — Testosterone cream with Topi-CLICK® interface and site-specific absorption modeling — Inventory management with advance reorder notifications — Two modes: Classic for straightforward TRT, Advanced for the full enhanced stack MY BLOODWORK — Automated OCR scanning — upload any photo or screenshot, markers extract automatically — Enhanced reference ranges calibrated for TRT and enhanced athletes, not the general population — Reference ranges that move with your health — the Cardio-Metabolic Cascade feeds your cardiovascular markers into a personalized testosterone ceiling — Hormonal balance scored against your true androgenic load using exclusive DHT receptor potency and paracrine amplification model — Biomarker Score: a weighted composite across 15 markers — hormones, cardiovascular, liver, kidney, hematology — Free T via four methods: Vermeulen, Mazer, Södergård, and Zakharov — exclusive to TRT Plus, and the only model accurate at supra-physiological levels — AI Bloodwork Report: 8 sections interpreting your results alongside your active protocol in context — Pathology partner integration for athlete-specific panels: ApoB, Cystatin C, GGT (region dependent) THE TESTIMATOR™ Predict your testosterone response across any protocol before you run it — anchored to your actual bloodwork, not a population average. Understand the shape of your response. KNOWLEDGE BASE 100+ topics across 15 categories. 150+ studies cited. Zero generic AI content. Every biomarker and recommendation covered with the depth for someone actually running a protocol. THE BUILD Built by an application engineer with 25 years of experience — and on TRT — in collaboration with TRT clinics, coaches, and pathology partners. Grounded in de-identified data from thousands of real-world TRT patient results. Not a general health app retrofitted. Built from the ground up for this population. Charted #2 in App Store Health & Fitness · Top Paid TRT App Full feature breakdown, screenshots, and the engine behind it all: trtplus.app

About

Stax On

Features
Read full description

Turn every workout into a competition. Stax On makes fitness social. Create exercise challenges with friends, submit your reps before the deadline, and battle it out on the leaderboard. Miss a round? You're eliminated. Last one standing wins. THREE WAYS TO COMPETE Stax On Mode: Start with a base number of reps that increases every round. As the target climbs, players drop. Can you outlast everyone? Streak Mode: Pick a target and keep hitting it, round after round. Same reps, pure consistency. How long can you last? Sprint Mode: One round. Maximum effort. Whoever stacks up the most reps wins. Sudden Death settles ties. BUILT FOR ACCOUNTABILITY Set daily, weekly, fortnightly, or monthly rounds Enable Time Crunch to shrink deadlines when you submit early Get push notification reminders before deadlines hit Set custom reminders to stay on track COMPETE WITH FRIENDS Add friends and invite them to competitions Share invite links so anyone can join Chat within competitions with mentions and likes See a live activity feed of your friends' submissions and milestones TRACK YOUR PROGRESS Detailed stats: wins, losses, streaks, and total reps Exercise charts broken down by day, week, and month Earn trophies for hitting milestones Climb the public leaderboard Push-ups, squats, pull-ups, sit-ups, running, walking, and more - tracked in reps, seconds, metres, or steps. If you can count it, you can compete in it. DESIGNED TO KEEP YOU MOVING Stax On isn't a workout planner or a rep counter. It's the reason you actually do the workout. When your mates are watching the leaderboard, you show up. Free to download. No subscription required.

Screenshots

TRT Plus4 screens
Stax On4 screens

Verdict

The call

The clearest difference is in-app purchases: Stax On at none against TRT Plus's 1. Stax On also leads on update cadence (every 3 days vs monthly). TRT Plus's advantage is ads (none vs shown) and device support (3 vs 1). On price 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. TRT Plus sells 1 one-off in-app purchase. Stax On asks for nothing beyond the download.

UpkeepUpdate frequency

TRT Plus ships an update monthly, Stax On every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
TRT Plus versus Stax On: the parameters behind the verdict, then further details
ParameterTRT PlusStax On
PriceFreeFree
Rating4.0 (20 ratings) — better—
Positive reviews72.2% of reviews—
Number of ratings20 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.0
Further details — not scored
Size60 MB115 MB
Age rating12+12+
DeveloperNathan SouthernTOBIAS ADAN DAVID SHAWARD

In-app purchases

1 purchases

TRT Plus

One-time1
  • TRT Plus Pro Lifetime$29.99
None

Stax On

No in-app purchases

Questions

Is TRT Plus free?
TRT Plus is free to download, with in-app purchases available.
Is Stax On free?
Stax On is free to download, with no in-app purchases.
Do TRT Plus or Stax On have ads?
Stax On shows ads; TRT Plus does not.
Which is updated more often, TRT Plus or Stax On?
TRT Plus ships an update monthly, and Stax On every 3 days. Most recently, TRT Plus was updated on October 30, 2026 and Stax On on October 25, 2026.

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