Comparison

COREPRESS vs Stack

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

Head to head
About

COREPRESS

Book reformer Pilates classes and order from a juice bar at a Brooklyn studio. Focus on intentional training, steady progress, and community. Manage memberships, class packs, and wellness products all in one place.

Highlights
  • Browse and book reformer Pilates classes
  • Purchase memberships and class packs
  • Join waitlists for booked classes
  • Track attendance and progress
  • Pre-order juice bar items
  • Shop wellness products and merchandise
Features
Read full description

Corepress is a reformer studio and juice bar designed to support how you move and how you feel. Located in Greenpoint, Brooklyn, our classes are intentionally small to create a more personal focused experience where you feel supported and guided. We focus on intentional training and steady progress building real strength over time. Whether you're new to the reformer or experienced - Each class meets you where you are, with a focus on control, alignment, and strength over time. Membership at Corepress is simple. No long-term contracts, no pressure. Choose what works for your schedule and adjust as you go. Class packs are also available for added flexibility. The juice bar is part of the experience. Cold-pressed juices, smoothies, açaí bowls, and a curated selection of wellness products because what you put in matters just as much as how you move. Order ahead through the app and grab your drink on the way out, or stay after class and take your time easing back into your day. One app. Everything in one place. With the Corepress app, you can: • Browse and book upcoming classes • Purchase memberships and class packs • Join the waitlist for fully booked classes • Track your attendance and progress • Pre-order juice before or after class • Shop Corepress gear and merch • Explore educational and wellness content Corepress is more than just a workout, it’s a space to move with intention, build strength with purpose, and be part of a community that values quality over quantity. Download the Corepress app and experience a more thoughtful way to move.

About

Stack

Features
Read full description

Stack is the all-in-one tracker for peptides, GLP-1 medications, and TRT protocols. Log every injection, build custom dosing schedules, track your progress, and keep your full history organized in one private place. Built for adults working with a prescribing healthcare provider, Stack replaces scattered notes and spreadsheets with a simple, consistent system you control. You enter your own values (peptide name, dose, schedule, and sites) and Stack keeps them organized, reminds you, and shows your progress over time. FEATURES • Custom Protocols & Stacks — Build your own multi-peptide protocols with flexible schedules (daily, weekly, every X days, or custom). Run multiple stacks at once, each clearly organized. • Smart Dose Logging — Log every injection in seconds and see what's due today on your Home screen and calendar. A daily streak keeps you consistent. • Reconstitution Calculator — Take the guesswork out of mixing. Enter vial amount, diluent volume, and target dose to get the exact mL or insulin-syringe units to draw. • Vial & Refill Tracking — Set how much each vial holds, watch it deplete with every dose, and refill in one tap. A tap-to-flip ring shows the exact percentage remaining. • Injection Site Tracker — Rotate sites with an interactive body map that remembers your recent spots, so you can avoid reusing the same area. • Apple Health Sync — Pull in weight, BMI, resting heart rate, HRV, sleep, steps, active energy, blood pressure, respiratory rate, body fat, lean mass, and VO2 max to see the full picture. • Progress Photos & Compare — Capture progress photos and view them side by side with weight and date overlays. Hide weight for privacy, then share a branded comparison. • Meal Scan — Snap a photo of your meal to estimate macros and keep nutrition alongside your protocol. • AI Assistant — Ask questions about your active stacks and protocols in a private chat built into the app. • Metrics & Insights — Clean charts and stats show how your protocol is trending over time. • Home Screen Widget — See your next dose and stay on track without opening the app. • Shareable Protocol Card — Generate a clean, branded card of your active protocol to save or share. PRICING Stack requires a subscription to unlock the full experience. IMPORTANT Stack is a personal record-keeping and organization tool for informational purposes only. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional care. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or protocol. Terms of Use (EULA): https://www.whatsyourstack.app/terms.html Privacy Policy: https://www.whatsyourstack.app/privacy.html Questions or feedback? Email us at contact@whatsyourstack.app.

Screenshots

COREPRESS4 screens
Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: COREPRESS at none against Stack's 2. COREPRESS also leads on iOS requirement (16.4 vs 18.0). Stack's advantage is update cadence (every 8 days vs every 5 months). On price, ads and device support 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. Stack sells 2 in-app purchases, starting at $9.99 per 7 days. COREPRESS asks for nothing beyond the download.

UpkeepUpdate frequency

COREPRESS ships an update every 5 months, Stack every 8 days. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
COREPRESS versus Stack: the parameters behind the verdict, then further details
ParameterCOREPRESSStack
PriceFreeFree
Rating5.0 (10 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 5 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size125 MB136 MB
Age rating17+17+
DeveloperSutra Fitness, Inc.Amari Thomas

In-app purchases

None

COREPRESS

No in-app purchases

2 purchases

Stack

Subscriptions2
  • Stack Weekly$9.997 Days
  • Stack Yearly$49.991 Year

Questions

Is COREPRESS free?
COREPRESS is free to download, with no in-app purchases.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do COREPRESS or Stack have ads?
Neither COREPRESS nor Stack shows ads.
Which is updated more often, COREPRESS or Stack?
COREPRESS ships an update every 5 months, and Stack every 8 days. Most recently, COREPRESS was updated on September 10, 2026 and Stack on September 14, 2026.

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