Regimen vs PeptIQ (2026): Side-by-Side Comparison

Both Regimen and PeptIQ are purpose-built for people tracking peptide protocols, not generic health apps repurposed for this use case. PeptIQ stands out for wearable integrations and bloodwork sync. Regimen stands out for compound breadth and price. Which one fits depends on how your protocol is set up.

The 2026 peptide tracker market has consolidated around a handful of credible options. This breakdown covers what each app does well, where they overlap, and which user each one is built for. For a broader landscape view, see our best peptide tracker apps roundup.

Quick verdict

Pricing

The monthly gap is roughly $15, or $180 per year. Over two years that is $360 in extra subscription cost for what most users will find to be comparable core tracking. If you do not need Whoop, Oura, or bloodwork sync, the math points to Regimen.

Compound library

Regimen tracks 600+ compounds. PeptIQ tracks 100+ peptide profiles. For the most common peptides (BPC-157, TB-500, GHK-Cu, CJC-1295, tirzepatide, semaglutide), both apps have you covered. The gap shows up for less common compounds.

Retatrutide, MOTS-C, tesamorelin, NAD+, KPV, SS-31, and the long tail of research chemicals all appear in Regimen's library. PeptIQ's catalog covers the most popular 100. According to our 2026 user data report, retatrutide is the most-tracked GLP-1 compound across active Regimen protocols.

Health integrations

Both apps sync with Apple Health. PeptIQ adds Whoop, Oura Ring, and direct bloodwork integrations (Quest, LabCorp, Function Health, SuperHuman, FHIR portals). Regimen adds Google Health Connect for Android users.

For a Whoop or Oura user, PeptIQ is genuinely better here. That is not a soft acknowledgement. If you live in your Whoop dashboard and want recovery scores next to your injection log, PeptIQ is built for you. Most peptide users (not all) rely on Apple Health rather than dedicated wearables, which is where Regimen's integration depth is more than sufficient.

Free tier comparison

This is Regimen's strongest card. The free tier unlocks every feature (PK curves, injection site rotation, health metric correlation, reconstitution calculator) for one compound. There is no time limit. You can stress-test the whole product on a single compound before paying anything.

PeptIQ's free tier is more limited. The half-life tracker, smart reminders, AI vial scanner, and advanced analytics live behind the $19.99/month wall. If your goal is to evaluate the app fully before committing, the free tier on Regimen lets you do that.

App Store ratings

Regimen: 4.9 stars across 70+ App Store reviews. PeptIQ: 4.2 stars across 36 reviews (May 2026). Both apps are well-rated. The numbers themselves are factual reference points, not editorial spin.

What PeptIQ does that Regimen doesn't

• Direct Whoop and Oura Ring integration
• Bloodwork sync with Quest, LabCorp, Function Health, SuperHuman, and FHIR portals
• Web app at app.peptiq.io for desktop use
• AI vial scanner (premium) for fast compound identification
• Protocol templates (6 free, 6 premium)
• Interaction Checker for compound combinations

What Regimen does that PeptIQ doesn't

• 600+ compound library, 6x broader than PeptIQ's 100+
• $4.99/month premium, 4x lower than PeptIQ's $19.99/month
• 4.9-star App Store rating versus 4.2 stars, measurably higher user satisfaction
• Full-featured free tier (every premium feature unlocked for one compound)
• GLP-1, TRT, and peptide depth in one app, not just peptides
• Google Health Connect support for Android users

Verdict

Choose PeptIQ if you already use a Whoop or Oura Ring and want wearable data alongside your injection logs, or if you need direct bloodwork integration with Quest, LabCorp, or Function Health as part of a clinical or provider-guided workflow. The web app is a real benefit for desktop users.

Choose Regimen if you are tracking multiple compounds (especially GLP-1 medications, TRT, and peptides simultaneously) and want the broadest compound library at the lowest price. At $4.99/month versus $19.99/month, Regimen is the practical choice for most biohackers who do not require Whoop or bloodwork integration. The free tier means you can test it fully before paying anything. See the full feature breakdown on the Regimen vs PeptIQ comparison page, or compare with our Regimen vs Pep AI breakdown.

Try Regimen free

• One compound, every feature unlocked, no credit card
• 600+ compounds: peptides, GLP-1, TRT, research chemicals
• Apple Health and Health Connect correlation built in

Get Regimen Free

Frequently Asked Questions

Is PeptIQ worth $19.99 a month?

It depends on your setup. If you use Whoop or Oura and want wearable data alongside your injection logs, or if you need direct bloodwork sync with a clinical provider, PeptIQ's integrations justify the cost. For most biohackers tracking multiple compounds without dedicated wearables, Regimen's $4.99/month delivers comparable core tracking.

What's the main difference between Regimen and PeptIQ?

Regimen has a larger compound library (600+ vs 100+) and a lower price ($4.99/mo vs $19.99/mo). PeptIQ has Whoop and Oura integration and direct bloodwork sync that Regimen lacks. The right choice depends on whether wearable integration is part of your workflow.

Does PeptIQ support retatrutide?

Yes, PeptIQ includes retatrutide in its GLP-1 tracker alongside semaglutide and tirzepatide. Regimen also supports retatrutide and it is the most commonly tracked GLP-1 compound in Regimen's active user base based on May 2026 user data.

Which app has more peptide compounds?

Regimen covers 600+ compounds including peptides, GLP-1 medications, TRT, and research chemicals. PeptIQ covers 100+ peptide profiles with verified research citations. For tracking common peptides both work. For less common compounds Regimen's library is broader.

Can I try Regimen before paying?

Yes. Regimen's free tier gives access to every feature (PK curves, health metric correlation, injection site tracking, reconstitution calculator) for one compound. There is no time limit on the free tier.

Does PeptIQ have a better interface than Regimen?

Both apps have modern, clean interfaces. Regimen's UI is built around a daily check-in workflow, designed to feel like a quick habit rather than data entry. PeptIQ has a more analytical layout with heavier emphasis on charts and wearable overlays. Interface preference is subjective. Both are well-designed.