Comparison

Drop vs TRT Companion

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

Head to head
About

Drop

This app helps individuals who self-inject medication manage their treatment by tracking injection sites and ensuring proper rotation. It prevents overuse of specific sites to avoid damage and maintain medication effectiveness. All data is stored locally for privacy and offline use.

Highlights
  • Visual injection site map
  • Track injection date, time, dose, location
  • Automatic site rotation
  • Full injection history
  • Cooldown tracking
  • Add notes to injections
Features
Read full description

Care in every injection. Repeated injections in the same site cause real damage: lipohypertrophy, scar tissue, and reduced absorption that affects how well your medication actually works. Drop makes proper rotation simple, so your treatment stays effective. Your data stays on your device. No account required. No personal health data collected or shared. Drop works entirely offline. Built for anyone who self-injects regularly, including: - Type 1 or Type 2 diabetes (insulin) - GLP-1 therapy (semaglutide, tirzepatide, Ozempic, Wegovy, Mounjaro) - Autoimmune conditions (methotrexate, adalimumab, etanercept) - Fertility treatment - MS, rheumatoid arthritis, Crohn's disease, and other biologics What Drop does: - Visual injection site map for abdomen, thighs, arms, and more - Track every injection with date, time, dose, and location - Automatic site rotation to prevent overuse - Full injection history at a glance - Cooldown tracking between injections - Notes on every injection - Works across iPhone, iPad, and Apple Watch Designed with empathy. Built for reliability. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

TRT Companion

Read full description

TRT Companion is the essential tracker for men on Testosterone Replacement Therapy — built to answer the question every patient has: is it actually working? Log your injections, track your blood work, monitor your wellness, and surface patterns that are easy to miss. Everything your treatment produces, in one place. TRACK YOUR PROTOCOL · Medications and injections – dose, volume, site rotation, next-dose countdown · Blood work panels – import from a PDF or enter manually, 40+ markers tracked over time · Daily wellness – energy, mood, libido, sleep quality, gym performance · Health metrics – resting heart rate, HRV, blood pressure, body mass (from Apple Health) · Injection site rotation so you never repeat a site too soon INSIGHTS THAT MEAN SOMETHING TRT Companion analyses your data and surfaces patterns: which markers are trending out of range, how your sleep affects next-day energy, whether your protocol change shifted your wellness score. Not guesswork – correlation across your actual data. BLOOD WORK, SIMPLIFIED Import your lab report as a PDF and the app reads it automatically. Every marker is mapped to reference ranges and flagged if it's outside. Trend lines show how you're tracking panel to panel. COMPOUND LIBRARY 200+ compounds used in TRT and adjacent protocols – from testosterone esters to ancillaries. Half-life, typical dose, and administration route, all in one searchable reference. DOCTOR-READY REPORTS Generate a clean summary of your protocol, recent blood work, and symptom history. Turn up to appointments prepared. AUGMENTED WITH APPLE HEALTH Pulls in sleep, resting heart rate, HRV, blood pressure, body mass, and step count – enriching your wellness picture and creating holistic insights. YOUR DATA STAYS YOURS Everything is stored on your device and backed up privately via iCloud. No account required. Nothing leaves your device except to your own iCloud. Privacy Policy: https://trtcompanion.app/privacy Terms of Use (EULA): https://trtcompanion.app/terms TRT Companion is a subscription. Pro Monthly is £5.99/month; Pro Annual is £39.99/year with a 7-day free trial. Payment is charged to your Apple ID at purchase confirmation. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. TRT Companion is a personal health tracker. It is not a medical device and does not provide medical advice. Always follow your prescribing physician's guidance.

Screenshots

Drop4 screens
TRT Companion4 screens

Verdict

The call

The clearest difference is device support: Drop at 3 against TRT Companion's 1. Drop also leads on iOS requirement (18.0 vs 26.0). On price, ads and in-app purchases 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. Drop sells 2 in-app purchases, starting at $1.99 per month and TRT Companion sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 7 level
Drop versus TRT Companion: the parameters behind the verdict, then further details
ParameterDropTRT Companion
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size53 MB10 MB
Age rating17+12+
DeveloperDouglas KilbyMARK BOULTON

In-app purchases

2 purchases

Drop

Subscriptions2
  • Drop Insight Monthly$1.991 Month
  • Drop Insight Yearly$9.991 Year
2 purchases

TRT Companion

Subscriptions2
  • Monthly$5.991 Month
  • Annual7 Days trial$39.991 Year

Questions

Is Drop free?
Drop is free to download, with in-app purchases available.
Is TRT Companion free?
TRT Companion is free to download, with in-app purchases available.
Do Drop or TRT Companion have ads?
Neither Drop nor TRT Companion shows ads.

Other comparisons