Arcline vs Peptide Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arcline
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Arcline is the TRT tracking app built for men who take their hormone therapy seriously. If you're on testosterone replacement therapy, the difference between a good protocol and a great one comes down to data. Not more data — better data. Arcline captures the details that actually matter: when your bloodwork was drawn relative to your last injection, which assay method your lab used, how your symptoms track against your protocol over months. It's the tool you wished you had after your first lab panel came back. WHAT ARCLINE DOES • Logs every dose — testosterone, HCG, anastrozole, enclomiphene — with injection site, time, and volume. • Captures full bloodwork panels with trough-vs-peak timing on every draw. Enter 20+ markers: Total T, Free T, SHBG, Estradiol, Hematocrit, PSA, full lipid panel, CMP, and more. • Flags when your hematocrit, hemoglobin, or PSA crosses clinical thresholds — using the same deterministic rules your endocrinologist uses. • Tracks daily symptoms — energy, libido, sleep, mood, morning erections, cognitive clarity, joint comfort — so you can see how your protocol is actually affecting how you feel. • Exports a one-page physician-ready PDF summarizing your last three panels, protocol timeline, and symptom trends. Walk into your appointment prepared. WHY ARCLINE Most TRT trackers treat bloodwork as a single number. Arcline treats it as a measurement in context — the hours since your last injection, the assay method your lab used (sensitive vs. standard estradiol, direct vs. calculated free T), and the protocol version it reflects. That's the context your clinician actually needs to interpret a result. Arcline is also honest about what it isn't. It doesn't give medical advice. It doesn't recommend doses. It doesn't use AI to interpret your labs. Every safety banner, every reference range, every pattern callout uses clinical-grade language — because medical content should read like medical content, not like a fitness app. WHO IT'S FOR • Men on prescribed TRT for at least three months • Patients at clinical TRT practices, urology groups, or endocrinologists • Anyone who's tired of spreadsheets, Notes-app logs, and forgetting what their last estradiol was PRIVACY BY DESIGN Your health data stays on your device and in your private iCloud account. Arcline has no accounts, no logins, and no third-party data sharing. Anonymous usage analytics are opt-in. SUBSCRIPTION OPTIONS Arcline is free to try. Premium unlocks unlimited bloodwork panels, trend visualizations, symptom correlation, and PDF export: • Annual — $129/year (best value, includes 7-day free trial) • Monthly — $19.99/month • Lifetime — $149 one-time Terms of use: https://www.arcline.health/terms/ Privacy policy: https://www.arcline.health/privacy/ Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > Subscriptions. No refunds for partial periods
Peptide Tracker
Track peptide and TRT/HRT protocols with dose calculators, blood-level charts, and injection reminders. Features an AI coach that analyzes your labs and health data for personalized insights. Your health data remains private on your device.
- Dose, blend, and half-life calculators
- Blood-level PK charts
- Injection logging with site rotation
- Full inventory tracking
- Phased protocols and titration schedules
- Lab result tracking and trend charts
- AI coach for health data analysis
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The dose calculators, blood-level charts, reminders, and full protocol tracking are free. No trial, no paywall, no catch. Most peptide and TRT apps charge for exactly this. I don't. Frontload is built for people running serious peptide and TRT/HRT protocols. Track every injection, watch your blood levels rise and fall between doses, run the dose and vial-mix math, and never miss a shot. The AI coach, the one paid feature, reads your own labs, protocols, and injection history, and it's built to say "I don't know" instead of guessing. WHAT'S FREE (and stays free) • Dose, blend, and half-life calculators • Blood-level PK chart: peak, trough, and steady-state, per compound • Injection logging with site rotation • Full inventory: every peptide, HRT compound, GLP-1 (semaglutide, tirzepatide), supplement, and med • Phased protocols with automatic on/off scheduling • Titration schedules: gradual dose adjustments over weeks, auto-stepping • Lab result tracking and trend charts • Macro logging • Sleep, fitness, and weight sync from Apple Health or Health Connect • Reminders and notifications • Light and dark mode • JSON export, anytime No account. No analytics. No cloud. Your health data lives on your phone. I can't see it, sell it, or lose it. THE AI COACH (Pro) Not a chatbot. Not a correlation engine. An actual coach with direct access to your full health context (labs, protocols, peptide stack, GLP-1 doses, nutrition, sleep, fitness, side effects), plus a curated knowledge base of peptide and HRT references. It reads a lab PDF, scans a supplement label, analyzes a side-effect cluster, and explains it in plain language. Grounded in your own data, not the internet's. Pro is $9.99/mo or $59.99/yr: unlimited AI coach conversations with photo attachments, unlimited lab PDF parsing, and unlimited nutrition and supplement-label scans. WHO BUILT THIS Frontload is a one-person project. I'm in the HRT and peptide community myself, and I wanted a tracker that didn't feel cold and clinical, so I built the one I wanted, with every feature I needed. I had my wife test it the whole way through, so it isn't built only for the guys. She told me what women actually need in a tool like this: cycle-aware tracking, the right hormone panels, and a tracker that doesn't assume everyone's a man on TRT. It's all in here. I gave it to one friend, hoping to help him. He gave it to another. That's how Frontload has gotten everywhere it's gotten so far. No ads. No growth team. The mission isn't to get rich. It's to cover the cost of running the app and build something genuinely useful to people on their HRT and peptide journeys. The AI Coach engages with compounds, doses, and protocols directly, but it's not a doctor. Always discuss any protocol change with your prescribing physician. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Peptide Tracker at 15.1 against Arcline's 26.4. On price, ads, in-app purchases and device support 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. Arcline sells 3 in-app purchases, starting at $19.99 per month and Peptide Tracker sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Arcline | Peptide Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (43 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 43 — better |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 26.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 16 MB | 51 MB |
| Age rating | 17+ | 17+ |
| Developer | Matthew Zartman | STACKEDDD LLC |
In-app purchases
Arcline
- Trough Premium Monthly$19.991 Month
- Trough Premium Annual7 Days trial$129.001 Year
- Premium Lifetime$149.00
Peptide Tracker
- Stackeddd Pro$9.991 Month
- Stackeddd Pro$59.991 Year









