Comparison

Reta vs Stackr

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

Head to head
About

Reta

Features
Read full description

TRACK YOUR TRANSFORMATION RETA is the first app designed specifically for retatrutide users. Whether you're taking retatrutide, Ozempic, Wegovy, Mounjaro, Zepbound, or other GLP-1 medications, Reta provides everything you need to track your journey in one beautiful, supportive companion. NEVER MISS A DOSE - Smart weekly injection reminders - Track dose amounts and injection sites - Log notes for each dose - See your complete medication history VISUALIZE YOUR PROGRESS - Beautiful weight tracking charts - Monitor weight loss trends over time - Track total pounds lost and percentage - See progress by dose cycle MONITOR YOUR HEALTH - Weekly side effect check-ins - Track common GLP-1 side effects: nausea, fatigue, appetite changes, and more - Rate severity and add detailed notes - Identify patterns with visual charts - Share comprehensive reports with your doctor NUTRITION & WELLNESS - Daily calorie logging - Track macros: protein, carbs, and fats - Water intake monitoring - Correlate nutrition with weight changes - Build healthy habits alongside medication SEAMLESS APPLE HEALTH INTEGRATION - Sync weight data automatically - Import activity and exercise data - Export medication logs - Keep all your health data in one place PRIVACY FIRST - Your data stays on your device - Secure iCloud sync (your private iCloud only) - We never sell your data to third parties - No account required - Full control over your information WHY RETA? Retatrutide is a revolutionary triple GIP/GLP-1/glucagon agonist showing promising results in clinical trials. While other apps are built for general GLP-1 medications, Reta was designed from the ground up with retatrutide in mind—though it fully supports all GLP-1 medications. BUILT FOR YOUR SUCCESS - Clean, warm, supportive design - No overwhelming features—just what matters - Evidence-based metrics - Regular updates and improvements Questions or feedback Contact us at support@retatrack.health Privacy Policy Here: https://retatrack.health/privacy

About

Stackr

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

Highlights
  • Log peptide and GLP-1 doses
  • Track vials, pens, and other supplies
  • Smart reminders for next doses
  • Home screen widgets
  • Estimated active level charts
  • Multi-peptide stack tracking
  • Reference pages for common compounds
Features
Read full description

Stackr is the all-in-one tracker for your peptide and GLP-1 protocol. Every dose, vial and meal in one place, with the math done for you. KEY FEATURES • Dose tracking and reminders Log a dose in seconds from your Home screen. Run daily, weekly, every-few-days or specific-day schedules, and several protocols at once. Reminders make sure you never miss a dose, and Home Screen widgets show what's next. • Dose calculator Enter your vial strength, water and dose, and see exactly how many units to draw on a U-100 or U-40 syringe. Works in mcg, mg, IU and units. • Supplies and vials Track vials, pens and other supplies. Stackr counts down what's left every time you log and warns you before you run out. • Progress Keep your weight, progress photos and dose history together, with a calendar of taken and missed doses and estimated active levels from your logs. • Food and calories Snap a meal, scan a barcode, search a food or just say what you ate. Stackr tracks calories and protein against your daily plan. • Stackr Coach Ask the AI coach questions about your routine and your meals, any time. • Learn Reference pages for semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, GHK-Cu and 100+ more, with research status and sources. WHY STACKR • Built for GLP-1s and peptides, from one weekly shot to a full stack • Pounds or kilograms, mcg or mg, U-100 or U-40 • Syncs across your devices when you sign in • Message the team directly from Settings Stackr is a personal tracking and educational app. It does not give medical advice, prescribe treatments or tell you which peptide, dose or schedule is right for you. Always talk to a qualified healthcare professional. Active levels and photo-based nutrition values are estimates. SUBSCRIPTION Stackr is free to download. Full access requires a paid Stackr+ subscription. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getstackr.app/privacy

Screenshots

Reta4 screens
Stackr4 screens

Verdict

The call

The clearest difference is in-app purchases: Reta at none against Stackr's 7. Stackr's advantage is chart position (#200 vs unranked). On price, ads, device support and iOS requirement 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. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Reta asks for nothing beyond the download.

Scorecard2 real differences · 9 level
Reta versus Stackr: the parameters behind the verdict, then further details
ParameterRetaStackr
PriceFreeFree
Rating—4.4 (143 ratings) — better
Positive reviews—72.0% of reviews
Number of ratings—143 — better
Update frequency—Every 4 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
Best chart rank—#200 — better
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size14 MB88 MB
Age rating4+12+
DeveloperMartini Holdings LLCStackr Holdings LLC

In-app purchases

None

Reta

No in-app purchases

7 purchases

Stackr

Subscriptions7
  • Stackr+ Weekly$7.997 Days
  • Monthly$12.991 Month
  • Stackr+ Yearly$29.991 Year
Show 4 more
  • Stackr+ Yearly$49.991 Year
  • Stackr+ Yearly3 Days trial$49.991 Year
  • Stackr+ Yearly$59.991 Year
  • Yearly3 Days trial$69.991 Year

Questions

Is Reta free?
Reta is free to download, with no in-app purchases.
Is Stackr free?
Stackr is free to download, with in-app purchases available.
Do Reta or Stackr have ads?
Neither Reta nor Stackr shows ads.

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