Injectly vs Peptide Library and Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Injectly
This app helps you track injectable medications, including weight, peptides, and GLP. Log injections, set reminders, and view your history. Optional account syncs data across devices and offers advanced scheduling. Gain insights into medication levels and active doses.
- Log injectable medication doses
- Set custom reminders
- View injection history (calendar/list)
- Cross-device data sync
- Advanced scheduling options
- Serum concentration insights
- Data export and deletion
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Injectly is the simple, yet powerful way to track your injectable medications. No ads, no subscription, and no tracking — just free help for staying on top of your regimen. Log every injection, set reminders that match your cadence, and review your history in a calendar or list. No account is needed for any of this. A free account with Apple or Google syncs your data across devices and unlocks advanced scheduling, such as on/off cycles and custom intervals. For supported medications, the Insights tab turns your logbook into a serum concentration view: an estimate of current and projected levels from the doses you've logged and your weight, how close you are to peak, and how much of the last dose is still active. Your health data is always yours: never sold, never used for advertising, and you can export or delete it anytime. Whether you're managing peptides, prescriptions, or personal health therapies, Injectly helps you log every injection, stay on schedule, and understand what's happening between each dose. Enjoy!
Peptide Library and Tracker
This app serves as a comprehensive guide and lab assistant for peptide research. It offers a detailed peptide library, dose calculation tools, and advanced tracking features for logging, inventory management, and protocol adherence. Users can also access educational content and community Q&A to enhance their research workflow.
- Comprehensive Peptide Library & Database
- Advanced Peptide Dose Calculator
- Smart Tracking & Calendar View
- Lab Inventory Management
- Protocol Tracking & Lab Assistant
- Integrated Peptide Education
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Peptide Library is the peptide tracker and peptide research library in one app. Plan your peptide schedule, get reminders, log every entry, keep your vial inventory up to date and look up any peptide, all in one place. Whether you research one peptide or a full stack, Peptide Library keeps your schedules, log history and inventory organized, on your device first. WHY PEPTIDE LIBRARY? ◉ TRACKER AND LIBRARY TOGETHER: read about a peptide, then add it to your schedule and inventory in a couple of taps. ◉ INVENTORY THAT KEEPS UP: every entry you log updates what's left in your vials, capsules and sprays. ◉ BUILT FOR STACKS: several peptides, several forms, each on its own schedule. ◉ PRIVATE BY DEFAULT: works offline, with optional account sync and backup. PEPTIDE TRACKER • Schedules: daily, every other day, chosen weekdays, or cycles with on and off weeks. • Reminders for every scheduled entry, with one tap to log or skip. • Log entries with time, amount and notes; log several at once and undo a log. • Calendar: month and week views of what you logged, missed or skipped. • Separate schedules for each form of a peptide: vial, capsules or nasal spray. • Site rotation on a body map, with a suggested next site. • Research Streak: counts the scheduled days you complete and earns XP. PEPTIDE STACKS AND BLENDS • Track a whole stack, each peptide on its own schedule. • Save blends and log them together. PEPTIDE INVENTORY • Track every vial, capsule, nasal spray and ready-to-use container. • See what's left, estimated uses left, run-out and reorder-by dates. • Low-stock, reorder and expiry alerts. • Save the price, purchase and opened dates, vendor and COA for each container. JOURNAL, PROGRESS AND BODY METRICS • Journal: daily check-ins for mood, energy, sleep and symptoms, with trends and PDF or CSV export. • Progress photos with a guided camera, timeline and side-by-side compare. • Weight, body fat, lean mass and body measurements, with goals and trend charts. • Works with Apple Health: bring in your weight and body fat (optional, read only). PEPTIDE RESEARCH LIBRARY • Peptide profiles with mechanisms, research summaries, half-lives and PubMed references. • Compare peptides side by side and share the comparison. • Peptide School: courses, guides and FAQs. PEPTIDE TRENDS AND COMMUNITY • Peptide Trends: see what the community is researching and popular schedules. • Community Q&A with other researchers. • Compare vendor listings and prices per mg, with vendors that ship to you listed first, and read supplier reviews. WIDGETS • Home Screen, Lock Screen and StandBy widgets for today's schedule, your next entry, your streak and inventory. PEPTIDE LIBRARY PRO Pro unlocks unlimited tracking, blends, courses, progress tools, Peptide Trends, Community, supplier reviews and sync. Choose a monthly or yearly subscription or a one-time lifetime purchase. Prices and any free trial are shown in the app before you buy. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel them in your App Store account settings. For research and educational purposes only. Not medical advice. Not for human consumption. Consult a qualified professional before any protocol. Privacy Policy: https://peptidelibrary.app/privacy Terms of Use (EULA): https://peptidelibrary.app/terms
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Verdict
The clearest difference is in-app purchases: Injectly at none against Peptide Library and Tracker's 3. Injectly also leads on ratings volume (501 vs 28). On price, rating, review sentiment and update cadence 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. Peptide Library and Tracker sells 3 in-app purchases, starting at $4.99 per month. Injectly asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Injectly against 4.8 for Peptide Library and Tracker. That said, the two scores are not equally well evidenced: Injectly has 501 ratings behind it against 28, so its average is the more settled of the two. Written reviews split almost evenly too, at 87% and 86% positive.
Injectly ships an update every 2 weeks, Peptide Library and Tracker every 11 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | Injectly | Peptide Library and Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (501 ratings) — better | 4.8 (28 ratings) |
| Positive reviews | 86.5% of reviews — better | 85.7% of reviews |
| Number of ratings | 501 — better | 28 |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 48 MB | 95 MB |
| Age rating | 17+ | 17+ |
| Developer | Matthias Gattermeier | Superfime LLC |
Customer experience
Injectly
Peptide Library and Tracker
In-app purchases
Injectly
No in-app purchases
Peptide Library and Tracker
- Peptide Library Pro Monthly3 Days trial$4.991 Month
- Peptide Library Pro Monthly Offer1 Month trial$4.991 Month
- Peptide Library Pro Yearly3 Days trial$39.991 Year
Questions
Is Injectly free?
Is Peptide Library and Tracker free?
Which has better reviews, Injectly or Peptide Library and Tracker?
Do Injectly or Peptide Library and Tracker have ads?
Which is updated more often, Injectly or Peptide Library and Tracker?
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