
Gyroscope
Daylio
Bearable App
Habitica
Day One
Everyday
ProductiveApp.io
Track everything in one place, understand your life.

PeptideCalculator.fit
PeptideCalculator.site
BioHack Track
PeptideDose.io
Peptide Tracker
BioStacks
Medisafe Pill & Med Reminder
See exactly what's active in your system. The most complete research-tracking app for peptides, supplements, medication and any kind of protocol. Plenty of features like AI assistant, compound half-life, lab reports and fact check, dose/cycle logs

Which is more popular?
Based on our record, Exist seems to be more popular. It has been mentioned 43 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | exist.io | pepledgerapp.com |
| Pricing | — | |
| Company | — | 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Exist yet.
PepLedger – Peptide Tracker is a private iPhone app for people who already run a peptide, GLP-1, TRT, or longevity protocol and want the log on the phone, not in a sheet. You log a dose. If that compound has a published half-life on file, What's Active Now shows an estimate of what is still left....
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Exist and PepLedger. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


As someone who has been on and off the Degoogle train (I ran full LineageOS without Google Play at one point) and is now pretty deep in iOS territory, I'd say the main thing for me has been email. I've used https://www.fastmail.com for a... - Source: Hacker News / almost 2 years ago
You may want to look into https://exist.io/. It's a very indie developer duo out of Australia (IIRC). And also IIRC they were looking for a buyer on Twitter some time ago. - Source: Hacker News / about 3 years ago
I have used this previously when tracking health metrics and I couldn't much else that had integrations. https://exist.io/. - Source: Hacker News / about 3 years ago
Tracking PepLedger since Aug 2026.
When comparing Exist and PepLedger, you can also consider the following products.

Gyroscope is a personalized dashboard for tracking your life.
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Free peptide calculator for concentration, dose volume, U-100 syringe units, and reverse unit-to-mcg checks. Transparent formulas and instant results.
Compare PeptideCalculator.fit to Exist or PepLedger:

Daylio enables you to keep a private diary without having to type a single line.
Compare Daylio to Exist or PepLedger:

Free peptide calculator for dosage and reconstitution. Calculate peptide dilution, syringe units and dosing instantly.
Compare PeptideCalculator.site to Exist or PepLedger:


Free peptide, GLP-1 and TRT tracker. Unlimited compounds and history, half-life levels, reconstitution calculator and vial inventory. No ads, no account.
Compare BioHack Track to Exist or PepLedger: