Stack'd vs Kairox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stack'd
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Stack'd makes building habits simple. Track your daily habits, build streaks, and journal your progress - all in one clean, focused app. Whether you're starting a morning routine, hitting the gym regularly, or building any positive habit, Stack'd keeps you accountable with daily check-ins, streak tracking, and journaling to document your journey. HOW IT WORKS - Create a habit and set your frequency (daily, weekly, specific days, or a custom schedule) - Check in each day to build your streak - Add rich text notes to journal your thoughts, motivation, or progress - View your history on a monthly calendar to see your consistency - Get gentle reminders so you never miss a day KEY FEATURES - Streak Tracking: Watch your streak grow day by day. Your longest streak is saved so you always know your personal best. - Flexible Scheduling: Daily, every other day, specific days of the week, or a custom number of days per week. - Rich Text Notes: Add formatted notes with bold, italic, lists, and more. Each day gets its own note, creating a personal habit journal. - Monthly Calendar View: See your check-in history at a glance with a colour-coded calendar. - Smart Reminders: Set custom reminder times for each habit so you stay on track. - Dark Mode: Easy on the eyes, day or night. - Privacy First: Your data is securely stored and never sold. PREMIUM (Optional) Free users can track up to 3 habits. Upgrade to Stack'd Premium for unlimited habits and support an independent developer. Stack'd is built by a solo founder who believes small daily positive actions lead to big changes. Start stacking your habits today. Terms of Use: https://www.notion.so/Terms-of-Use-End-User-License-Agreement-0c7cfdcb0b3b41c298cd9046fba1d748?source=copy_link Privacy Policy: https://www.notion.so/STACK-D-PRIVACY-POLICY-76b99a05b369499cabeaf73416a5d431?source=copy_link
Kairox
This app helps you build healthy hydration habits through smart tracking, reminders, and gamified wellness. Log water and electrolytes, build streaks, and unlock achievements with a virtual whale companion. Access requires a subscription or lifetime membership.
- Hydration tracking
- Electrolyte logging
- Streak building & achievements
- Smart reminders
- Whale companion gamification
- History & insights
- Apple Health integration
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Kairox Kairox is a screen time and digital wellness app designed to help you break doomscrolling habits by making distracting apps something you unlock, not something you open automatically. Choose the apps that waste the most time, complete exercises like push-ups, squats, or lunges, and earn a limited amount of access. Kairox helps you interrupt mindless scrolling, move more throughout the day, and use social media more intentionally. Kairox requires an active subscription to access and use the app. There is no free version or permanently free content. SUBSCRIPTIONS Kairox offers the following subscription options: Monthly Subscription Provides full access to all Kairox features with a recurring monthly subscription. Yearly Subscription Provides full access to all Kairox features with a yearly subscription and includes a 3-day free trial. If you do not cancel before the trial ends, the full yearly subscription price will be charged automatically. FEATURES INCLUDED WITH ALL SUBSCRIPTIONS BLOCK DISTRACTING APPS Select the social media and entertainment apps that distract you most. Kairox uses Apple’s Screen Time and Family Controls features to restrict access to the apps you choose. MOVE TO UNLOCK Complete push-ups, squats, or lunges to regain access to selected apps. Instead of receiving unlimited access, you unlock a specific amount of time before the restriction returns. CAMERA-BASED REP COUNTING Use your device’s camera during an active movement session so Kairox can recognize supported exercises and count completed repetitions. CUSTOM EARNING RULES Choose your exercise, set the number of required repetitions, and decide how much app access each completed session earns. BUILD STREAKS AND TRACK PROGRESS Stay consistent with streaks, milestones, exercise history, unlock history, and progress tracking. SCREEN TIME INSIGHTS Review your app usage, completed movement sessions, unlocked time, and long-term progress to better understand your habits. REMINDERS AND NOTIFICATIONS Receive exercise reminders, unlock alerts, streak updates, and notifications when your earned access is about to end. PERSONALIZED APP CONTROLS Choose which apps are restricted and adjust your movement, access, and notification preferences at any time. HOW IT WORKS Choose the apps you want Kairox to restrict. Select push-ups, squats, or lunges. Complete the required number of repetitions. Unlock a set amount of app access. When the earned time expires, the selected apps are restricted again. Complete another movement session whenever you want to regain access. PURCHASE DETAILS Payment is charged to your Apple ID at confirmation of purchase. Monthly subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. Yearly subscriptions include a 3-day free trial. If you do not cancel before the trial ends, the full yearly subscription price will be charged automatically. Your account will be charged for renewal within 24 hours before the end of the current subscription period. You can manage or cancel your subscription at any time through your App Store account settings. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kairox-website-one.vercel.app/privacy
Screenshots
Verdict
The clearest difference is iOS requirement: Stack'd at 15.1 against Kairox's 17.0. On price, ads, 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. Stack'd sells 2 in-app purchases, starting at $4.99 per month and Kairox sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Stack'd | Kairox |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 18 MB |
| Age rating | 4+ | 12+ |
| Developer | Oladimeji Ipaye | Sofia Marin |
In-app purchases
Stack'd
- Stack'd Premium - Monthly$4.991 Month
- Stack'd Premium - Yearly$34.991 Year
Kairox
- Monthly Pro7 Days trial$5.991 Month
- Lifetime Pro$14.99









