Trough vs Arcline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trough
This app helps men on testosterone replacement therapy track their protocol, log daily wellness, and monitor hormone levels. It offers advanced features like pharmacokinetic modeling and bloodwork analysis, all while prioritizing user privacy with offline-first, on-device data storage.
- Log TRT injections and compounds
- Track daily wellness metrics
- Calculate Protocol Score
- PK curve modeling (Pro)
- Bloodwork tracking (Pro)
- Offline-first data storage
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Log every TRT injection, see your estimated testosterone level between doses, and keep your bloodwork in one place. Private by design: no account, no ads, and your data stays on your iPhone. Trough is a testosterone and injection tracker built for men on TRT. Log a shot in seconds, get a suggested site for the next one, and check in daily in about 30 seconds. NEW IN 1.5 • Streak Shields: earn a shield for every 7 check-in days. A shield covers a missed day, so one off day doesn't end your streak. • A year of check-ins at a glance on the Achievements screen • A new welcome screen and a refreshed app icon • A gentle reminder if you've been away for a while INJECTION LOG • Log dose, compound and injection site in seconds • 10-site rotation with a suggested next site • Calendar of every shot, with dose stamps • Injection-day reminders and a Live Activity countdown to your next dose • Testosterone cypionate, enanthate, propionate and undecanoate, including multi-ester protocols ESTIMATED LEVELS (PRO) • An estimated level curve between doses, modeled from your own injection log • Estimated peak, trough and current level. These are model estimates, not lab results. DAILY CHECK-IN + PROTOCOL SCORE • Rate energy, mood, libido, sleep quality and mental clarity in about 30 seconds • Two quick yes/no taps: morning erections and workout • Your answers roll up into a Protocol Score from 0 to 100, so you can follow trends over time STREAKS, LEVELS & BADGES • Check-in streaks, with Streak Shields for the odd missed day • 11 levels from Paper to Diamond and 42 badges to earn • Daily challenges and weekly quests BLOODWORK (PRO) • 19 markers, including total and free testosterone, estradiol (E2), hematocrit and PSA • Reference ranges and trend charts for each marker across lab draws • Attach lab photos and doctor notes PEPTIDES, GLP-1s & ADJUNCTS (ONE FREE) • Peptides (BPC-157, ipamorelin), GLP-1s (semaglutide, tirzepatide) and adjuncts like hCG and anastrozole • Schedules and reminders alongside your testosterone protocol REPORTS, EXPORT & APPLE HEALTH • Weekly report and a Doctor Report PDF to bring to your next appointment (Pro) • CSV import and export • Reads HRV, resting heart rate, sleep, steps, active energy and weight from Apple Health • Home Screen and Lock Screen widgets PRIVATE BY DESIGN • No account and no sign-up. No ads. • Your health log is stored on your iPhone, not on our servers • iPhone only, iOS 17 or later. The app is available in 11 languages. TROUGH PRO Trough is free to download. Trough Pro unlocks the estimated level curve, bloodwork tracking, unlimited peptides and GLP-1s (one compound is free), the weekly report and the Doctor Report PDF. Monthly and yearly plans are available, with a 7-day free trial for eligible new subscribers. • Payment is charged to your Apple Account at confirmation of purchase • Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period • Your account is charged for renewal within 24 hours before the end of the current period • Manage or cancel anytime in your Apple Account settings Trough is a tracking tool, not a medical device, and does not provide medical advice. Always talk to your doctor before changing your protocol. Terms of Use: https://gwlabs.app/terms Privacy Policy: https://gwlabs.app/privacy
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
Screenshots
Verdict
The clearest difference is iOS requirement: Trough at 17.0 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. Trough sells 2 in-app purchases, starting at $9.99 per month and Arcline sells 3 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Trough | Arcline |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 23 MB | 16 MB |
| Age rating | 12+ | 17+ |
| Developer | GW Capital Partners LLC | Matthew Zartman |
In-app purchases
Trough
- Trough Pro Monthly7 Days trial$9.991 Month
- Trough Pro Annual7 Days trial$49.991 Year
Arcline
- Trough Premium Monthly$19.991 Month
- Trough Premium Annual7 Days trial$129.001 Year
- Premium Lifetime$149.00









