Comparison

StackMindr vs Halflife

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

Head to head
About

StackMindr

Track peptide schedules, inventory, and personal well-being with automated organization and reminders. Monitor progress with charts and gain insights into how compounds affect your daily state. Includes a glossary of over 130 compounds.

Highlights
  • Compound schedule and inventory tracking
  • Injection site rotation
  • Daily check-ins for mood and energy
  • Progress photos and trend charts
  • 130+ compound glossary
  • Low-stock alerts
  • Private data with export options
Features
Read full description

StackMindr is the all-in-one tracker for peptides, TRT, HGH, HCG, GLP-1s, and supplements — the OS for your body. Track every compound's schedule and stock together, get reminders, rotate injection sites, log how you feel, and store your lab work — all in one private, beautifully simple app. WHAT'S NEW • Auto-organized stack & pantry — every compound sorts itself by type (hormones & TRT, GLP-1s, GH release, healing, and more), automatically. No tagging, no setup. • Built for bigger screens — rich multi-column layouts on iPad and iPhone Duo. • Reliability fixes and polish throughout. TRACK YOUR STACK • Every compound in one view — schedule and inventory together • Daily tracking with reminders you can act on from the lock screen • Injection-site rotation on real body maps • Low-stock alerts before you run out SEE YOUR RESULTS • Daily check-ins for energy, mood, sleep, libido, focus, and recovery • Weight, measurements, and progress photos with trend charts • AI insights that connect how you feel to what you're running (Pro) KNOW YOUR COMPOUNDS • 130+ compound glossary with frequency, categories, and research links • Peptides, GLP-1s, hormones, bioregulators, nootropics, and more PRIVATE BY DESIGN • Face ID / Touch ID app lock • Your data is never sold — export to PDF or JSON anytime Free to start. StackMindr Pro ($4.99/mo) unlocks unlimited compounds, AI insights, lab tracking, photo/PDF import, and Apple Health sleep. StackMindr is a tracking and educational tool. It is not medical advice and does not diagnose, treat, or prescribe. Always consult a qualified healthcare provider. StackMindr Pro is an auto-renewing subscription — $4.99/month. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel anytime in your Account Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stackmindr.app/privacy

About

Halflife

Manage complex health protocols involving peptides, TRT, and longevity compounds. Track dosing, inventory, and biological effects with detailed pharmacokinetic modeling. Integrates with Apple Health for comprehensive wellness insights.

Highlights
  • Multi-compound protocol tracking
  • Pharmacokinetic concentration curves
  • Dose scheduling and adherence
  • Vial inventory management
  • Syringe calculator
  • Apple Health integration
  • Compound database
Features
Read full description

If tirzepatide, peptides, TRT, insulin, nootropics, and longevity compounds are part of the same protocol, fragmentation becomes the limiting factor. Halflife unifies multi-compound protocols into a single system for dosing, pharmacokinetics, adherence, inventory, and real-world performance tracking. Core System Tracks complete protocol stacks across GLP-1 medications, recovery peptides, growth hormone secretagogues, testosterone replacement, insulin, nootropics, sexual health agents, and longevity compounds in one environment. Every compound is logged within a unified timeline with dose history, vial stock, and schedule position. Concentration Curves Uses published pharmacokinetic data from FDA labels and peer-reviewed research to model active compound levels over time. Each compound is displayed as a live curve showing time to peak, current activity as a percentage of peak, and clearance trajectory. Biological effect windows model downstream activity for short half-life peptides. Today Screen Central execution layer for all protocols. Shows due doses, week progression, remaining vial inventory, and one-tap logging. Injection site rotation tracked automatically. Integrated syringe calculator converts vial concentration and target dose into exact draw volume. Protocol Tools Synergy Matrix, Reconstitution calculator, Unit converter, Vial runway calculator, Adherence circle. Compound Database Medically cited library covering tirzepatide, semaglutide, BPC-157, TB-500, CJC-1295, ipamorelin, testosterone esters, insulin, nootropics, and longevity compounds. Biometric Intelligence Apple Health integration connects sleep, HRV, heart rate, and weight trends with dosing history. Community System Pods, Challenges, Daily polls, Community discovery. Data Model All data stored locally on device. Nothing transmitted externally. 45 substances across GLP-1s, peptides, GH secretagogues, TRT, insulin, nootropics, sexual health, and longevity stacks. Free tier: two compounds, full logging, weight tracking, 4 free tools, Adherence Calculator, Community Access. Advanced unlocks unlimited protocols and full analytics. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://halflife-labs.com/privacy/

Screenshots

StackMindr4 screens
Halflife4 screens

Verdict

The call

The clearest difference is ratings volume: Halflife at 71 against StackMindr's 8. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. StackMindr sells 1 in-app purchase, starting at $4.99 per month and Halflife sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for StackMindr against 4.9 for Halflife. That said, the two scores are not equally well evidenced: Halflife has 71 ratings behind it against 8, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

StackMindr ships an update weekly, Halflife every 6 days. Both last shipped on October 31, 2026.

Scorecard1 real difference · 9 level
StackMindr versus Halflife: the parameters behind the verdict, then further details
ParameterStackMindrHalflife
PriceFreeFree
Rating5.0 (8 ratings) — better4.9 (71 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings871 — better
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size26 MB59 MB
Age rating12+4+
DeveloperStackMindr LLCZiad Soliman

Customer experience

StackMindr

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Halflife

All ratings50 ratings
Positive98.0%
Neutral2.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

StackMindr

Subscriptions1
  • StackMindr Pro$4.991 Month
3 purchases

Halflife

Subscriptions3
  • Halflife Premium$9.997 Days
  • Halflife Pro Annual$34.991 Year
  • Halflife Pro Annual$44.991 Year

Questions

Is StackMindr free?
StackMindr is free to download, with in-app purchases available.
Is Halflife free?
Halflife is free to download, with in-app purchases available.
Which has better reviews, StackMindr or Halflife?
StackMindr is rated higher. StackMindr averages 5.0 out of 5 from 8 ratings, while Halflife averages 4.9 from 71 ratings.
Do StackMindr or Halflife have ads?
Neither StackMindr nor Halflife shows ads.
Which is updated more often, StackMindr or Halflife?
StackMindr ships an update weekly, and Halflife every 6 days. Most recently, StackMindr was updated on October 31, 2026 and Halflife on October 31, 2026.

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