Stack vs Master Key
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Stack
Read full descriptionHide full description
Stack is a routine execution system for people who already know what they should be doing. You have a supplement stack. A skincare routine. A training programme. The problem isn't information, it's execution. Stack turns everything you already have into a clean daily checklist, then gets out of your way. IMPORT ANYTHING Paste your routine as raw text like notes, a WhatsApp message, a list, an AI summary. Stack reads it and builds your structured routine automatically. No templates. No manual entry. Just paste and go. TODAY VIEW Every block due today appears in one flat list, in order. Morning supplements. Evening skincare. Push day. You open the app, work through the list, and close it. That's the entire interaction. PROTOCOLS LIBRARY All your routines live in one place. Skincare, Supplements, Fitness, anything else. Each protocol shows how many steps are scheduled today and your current completion rate. Tap in to drill down to individual steps. HISTORY LOG Look back at any day. See exactly what you completed, what you skipped, and any notes you added. Useful for spotting patterns over time like realising you always miss Tuesday evening. INSIGHTS Weekly and monthly adherence charts with AI-generated analysis. Stack looks at your completion data across all protocols and surfaces specific, actionable observations, not generic encouragement. BUILT FOR PROTOCOL PEOPLE Stack is not a habit-building app. There are no streaks, no badges, no motivational quotes. It assumes you already have the discipline. It just removes the friction between knowing what to do and actually doing it. Works with any routine: supplements, skincare, training splits, mobility work, morning shakes, medication, meal prep. If it has steps, Stack can hold it. Dark and light mode. Notification reminders. Cloud sync across devices. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getstackapp.xyz/privacy Stack Terms: https://getstackapp.xyz/terms
Master Key
Read full descriptionHide full description
Try Master Key Manifesting free for 7 days โ no commitment, cancel anytime. Manifest faster with Master Key. This is a guided manifestation and meditation experience designed to help you align your mind, body, and frequency with the life you desire. SUBSCRIPTION Full access to all features requires a subscription. Weekly and annual plans are available. Subscriptions auto-renew and can be cancelled anytime in your App Store settings. Most people know what they want. Few know how to feel it before it arrives. Master Key bridges that gap โ combining self-guided meditation, deep visualization, ambient soundscapes, and daily affirmations to train your subconscious mind to receive what you're calling in. YOUR PRACTICE Show up every day โ even for 5 minutes. Track your sessions, hit the sweet spot, and watch the magic begin! FEATURES โข Self-guided meditation with binueral beats and ambient sounds โข Record and play back your own visualizations โข Vision board โ add photos and intentions โข Daily affirmations delivered throughout your day โข Core beliefs and custom affirmation builder โข The Master Key Library โ legends and lessons on manifestation โข Track sweet spots, synchronicities, and session notes โข Records and calendar to watch your progress grow โข Frequency levels โ rise from Dormant to Transcendent Manifest with real guidance, not just prompts. Immersive, coaching-style visualizations walk you through the feelings and images of the life you're calling in โ not just a checklist to log. Set the goals your future self is already living. Turn your deepest desires into clear, specific intentions โ then watch the universe start rearranging itself around them. Your daily return to yourself. A few mystical, grounding minutes each day is all it takes to realign with the life that's already yours. THE SWEET SPOT The moment you truly feel it โ where belief and emotion align. That frequency is your signal to the universe. Master Key helps you find it, track it, and return to it. The door opens from the inside. Master Key isn't just an app โ it's your guide back to the version of you who already has it all. THE MASTER KEY The key has always been yours. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Stack at every 6 days against Master Key's every 2 weeks. Stack also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Stack sells 3 in-app purchases, starting at $3.99 per month and Master Key sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Stack ships an update every 6 days, Master Key every 2 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | Stack | Master Key |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days โ better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod, Apple Watch โ better | iPhone |
| Requires iOS | 15.1 โ better | 16.2 |
| Further details โ not scored | ||
| Size | 62 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Naveen Senapathi | Shaw Zarkoub |
In-app purchases
Stack
- Stack Pro Monthly$3.991 Month
- Stack Pro Annual1 Month trial$39.991 Year
- Stack Pro Lifetime$79.99
Master Key
- Master Key Premium โ Weekly$2.997 Days
- Master Key Premium โ Annual$49.991 Year









