Booked (Previously PTO) vs Peptide Library
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Booked (Previously PTO)
This app allows users to book, change, or access scheduled school events like in-person meetings, online sessions, or phone calls. It serves as a mobile extension of a school's web-based booking system. Access is granted through an active school subscription.
- Book scheduled school events
- Modify existing bookings
- Access bookings on the go
- Supports in-person, online, and phone events
- Mobile extension of web platform
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Booked is an application that facilitates bookings for scheduled events at a school, whether in person, online, or on a phone call. The mobile application is the perfect extension of the web version, designed for bookings to be made, changed, or accessed on the go. Access requires that the school has an active subscription to Booked. *** Having problems logging in? Contact the school for assistance - it might be something basic, like your email address or login details aren't up to date, or the event may not be opened yet. ***
Peptide Library
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Peptide Library helps you track your peptide Cycle and research peptides and compounds in one place. Track your Cycle See what's scheduled today, record completed items, check your week, and use the calendar to look ahead or review what you've tracked. Build your Stack Add the compounds you're tracking, organize your schedule, set reminders, and keep your current Cycle in one place. Follow your progress Set goals, add measurements, and follow changes over time. Track weight and other measurable goals, along with check-ins for sleep, recovery, skin, and energy. Research peptides & compounds Explore an editorial library covering peptides and related compounds, with research context, safety information, administration information where supported, and source-backed references. Made for personal tracking Your Stack, amounts, schedules, goals, and measurements are entered by you. Peptide Library does not recommend compounds, combinations, dosages, or treatment protocols. Peptide Library is intended for educational and personal tracking purposes. It is not medical advice and is not a substitute for advice, diagnosis, or treatment from a qualified healthcare professional.
Screenshots
Verdict
The clearest difference is update cadence: Peptide Library at every 5 days against Booked (Previously PTO)'s every 2 months. Booked (Previously PTO)'s advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Booked (Previously PTO) ships an update every 2 months, Peptide Library every 5 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Booked (Previously PTO) | Peptide Library |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 6.7% of reviews | โ |
| Update frequency | Every 2 months | Every 5 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 5 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | CountryNet Software | Jay Park |
In-app purchases
Booked (Previously PTO)
No in-app purchases
Peptide Library
No in-app purchases
Questions
Is Booked (Previously PTO) free?
Is Peptide Library free?
Do Booked (Previously PTO) or Peptide Library have ads?
Which is updated more often, Booked (Previously PTO) or Peptide Library?
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