Modii vs 75 Days Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Modii
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Modii focuses on health-related data and shows health data to users in a clearer and easier way, so that users can better understand their own situation and quickly understand various indicators from various data. 1. Mdii can display the number and distance of walking every day, set weekly goals and record whether the goal is completed every day, so as to urge yourself to complete the exercise goal. 2. Modii can calculate and display the daily calorie consumption. Similarly, it can also set the daily consumption target. 3. Modii also provides a water recording function, which can record how much water you drink at each time, so that at any time, you can check whether your water consumption has reached a healthy level. 4, Modii also provides the view of sleep time, for people who use the watch to record sleep time, this can be convenient to check the sleep time. If you encounter any problems during use, please send feedback to the following email: knowtimefeeback@163.com If you have any suggestions, please use the email above. If you like the app, feel free to leave a comment.
75 Days Challenge
Build and track custom 75-day challenges for habits like fitness, wellness, or reading. Make progress visible with daily logs, photo proof, and friend invitations. The app stores your data locally or syncs securely with iCloud.
- Customizable 75-day challenges
- Daily habit tracking
- Photo proof for progress
- Friend invitations and progress sharing
- Timely reminders
- Local data storage or iCloud sync
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Own75 turns lasting change into a clear, motivating daily practice. Build a 75-day challenge around the habits that matter to you, then make progress visible one day at a time. Choose a ready-made challenge or create your own. Set goals for discipline, fitness, wellness, reading, mindfulness, digital detox, or everyday routines—with flexible rules that fit your life. Stay accountable without feeling overwhelmed: • See exactly what is left to do today • Track streaks, completion, and long-term progress • Log water, workouts, reading, reflections, and other custom goals • Add photo proof to make your progress tangible • Invite friends and see each other’s daily progress • Get timely reminders so good intentions become consistent action ### The app collects absolutely no personal data. Your challenge photos and data are stored locally on your device. ### If you’re signed in to iCloud, your challenge count, invite code, and challenge data are synced securely to your personal iCloud account. Own75 is more than a checklist. It is a personal system for showing up, building momentum, and seeing who you become after 75 days. Start with one challenge. Keep going one day at a time. ### You must upgrade to Pro to use this app. **Subscription Details:** - Payment: Charges will be deducted from your iTunes account upon confirmation of purchase. - Automatic Renewal: Your subscription renews automatically unless turned off at least 24 hours before the end of the current period. - Renewal Charges: Your account will be charged for renewal within 24 hours before the current period ends. The fee will be provided by the system. - Subscription Management: Manage your subscriptions and turn off auto-renew in your account settings after purchase. - Cancellation and Refund: Managed directly by the store. - Free Trial: Any unused portion of a free trial is forfeited when a subscription is purchased. For more details, view our Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Read our Privacy Policy: https://www.kai7.app/p/privacy-policy-no-tracking.html
Screenshots
Verdict
The clearest difference is in-app purchases: Modii at none against 75 Days Challenge's 3. 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
Both are free to download. 75 Days Challenge sells 3 in-app purchases, starting at $7.99 per 7 days. Modii asks for nothing beyond the download.
| Parameter | Modii | 75 Days Challenge |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Subscription |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | 晓伟 庄 | Kai Chi Tsao |
In-app purchases
Modii
No in-app purchases
75 Days Challenge
- Own75 Weekly$7.997 Days
- Own75 Annual$29.991 Year
- Own75 Lifetime$39.99









