StackDay vs StackProof
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StackDay
This app helps you consistently take your vitamins and supplements. Log doses, build streaks, and view your adherence over time. It offers smart reminders and pre-loaded supplement information to make tracking easy.
- Daily checklist for all supplements
- 50+ pre-loaded supplements
- Streak and adherence statistics
- Customizable smart reminders
- Local data storage for privacy
- Home screen widget (Pro)
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Keep your supplements and peptide doses organized in one daily schedule. Log what you take, get reminders, and review your adherence, weight and wellness over time. YOUR DAY, TOGETHER See supplements and scheduled peptide doses in Today. Build a routine around your wake-up, meals and bedtime, then check off each dose as you take it. A RECORD YOU CAN REVIEW Explore dose history, adherence calendars and progress views. Record weight and wellness check-ins alongside your regimen to spot patterns. Patterns and correlations do not establish cause and effect. PEPTIDE TRACKING Keep records of your protocols, vial use and injection sites. Review past site usage to help plan rotation. Any estimated compound-level chart is illustrative and is not a measured blood level or a guide to when to take a dose. Follow your clinician's instructions. BUILD AND MAINTAIN YOUR STACK Find supplements in the library, add your own items, manage inventory and review supported timing checks. Checks are informational, are not exhaustive and do not establish that a combination is safe. REMINDERS AND WIDGETS Use reminders and supported Home Screen or Lock Screen widgets to keep your routine visible. Reminder timing follows the schedules you enter. BACKUP AND RESTORE Create a full backup in Files and restore your saved regimen and history when needed. Keep backups somewhere safe before replacing or deleting your app. OPTIONAL ONLINE TOOLS Label scanning and the AI Supplement Advisor use online processing. Relevant input is sent to service providers when you use these features. Core tracking records are stored on your device; analytics and subscription services also process data as explained in the Privacy Policy. SUBSCRIPTION ACCESS New users need a StackDay Pro subscription to continue after setup. Available plans, prices and any eligible free trial are shown before purchase. Subscriptions renew automatically unless canceled through your Apple account. Existing users may retain legacy access. MEDICAL DISCLAIMER StackDay is for personal organization and tracking. It does not provide medical advice, diagnose conditions, prescribe treatment or determine safe doses. Verify any calculations independently and consult your healthcare provider before changing a medication, supplement or peptide regimen. Privacy Policy: https://foggy-labs.github.io/privacy/stackday Terms of Use: https://foggy-labs.github.io/terms/stackday Support: https://foggy-labs.github.io/support/stackday
StackProof
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Most people take supplements and hope for the best. StackProof turns that guesswork into a real personal experiment so you finally know what's working, what's not, and what's worth keeping. HOW IT WORKS StackProof uses a simple 3-phase method used in clinical research, adapted for everyday use: 1. Baseline Phase - Log how you feel for 7 days without taking the supplement. This captures your natural normal. 2. Active Phase - Start taking your supplement daily and keep logging. 60 seconds a day. 3. Review - See a clear before vs after comparison across every metric that matters to you. No guessing. No placebo. Just your own data telling you the truth. WHAT YOU TRACK Every day you log 5 metrics on a simple 1-5 scale: - Energy - Focus - Mood - Sleep Quality - Side Effects Over time, StackProof shows you exactly how each metric shifted from your baseline to your active phase, with a confidence rating based on your consistency. SMART BASELINE After your first experiment, StackProof learns your patterns. On future experiments it can detect when you have enough recent data to skip the waiting period and start the active phase immediately. BUILT FOR REAL BIOHACKERS StackProof is designed for people who take their optimization seriously. Whether you're testing Lion's Mane for focus, Magnesium for sleep, Ashwagandha for stress, or anything else, every experiment gives you a clean structured result you can actually act on. STACKPROOF PRO Unlock the full experience: - Unlimited simultaneous experiments - Full analytics with trend charts across 7, 30, and 90 days - Smart Baseline - skip waiting periods using your recent data - Unlimited experiment history - Custom metrics beyond the default 5 - Data export to CSV - Washout period reminders Start with a free 7-day Pro trial. No charge until the trial ends. Cancel anytime. YOUR DATA Your logs are private and stored securely. StackProof never sells your data or uses it for advertising. Start your first experiment today. Your stack deserves an honest test. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: StackProof at none against StackDay's shown. StackProof also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, in-app purchases 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
Both are free to download. StackDay sells 8 in-app purchases, starting at $0.99 per 7 days and StackProof sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
StackDay ships an update every 4 days, StackProof weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | StackDay | StackProof |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 24 MB | 42 MB |
| Age rating | 17+ | 4+ |
| Developer | Fog Hill, LLC | joel Saucedo Lozano |
In-app purchases
StackDay
- Pro Weekly Discount3 Days trial$0.997 Days
- Pro Weekly$1.997 Days
- Pro Monthly Discount$3.991 Month
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- StackDay Pro Monthly$4.991 Month
- StackDay Pro Monthly Subscription3 Days trial$4.991 Month
- Pro Annual Discount$19.991 Year
- StackDay Pro Annual Subscription3 Days trial$24.991 Year
- StackDay Pro Annual7 Days trial$49.991 Year
StackProof
- Monthly$1.991 Month
- Yearly$34.991 Year
- Lifetime$59.99









