Fill it Forward vs MDex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fill it Forward
This app connects you to a community focused on giving back and environmental responsibility. Track your positive impact, contribute to charitable projects, and stay hydrated by scanning your reusable bottle or sticker.
- Contribute to charitable projects
- Track environmental impact
- Join community groups and leaderboards
- Monitor beverage consumption
- Earn status levels and discounts
- Enter community draws
- Find refill stations
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With the Fill it Forward app you will be part of a community that is always giving. Contribute to meaningful charitable projects, track your environmental footprint, join the community, and stay hydrated every time you reuse. HOW IT WORKS: 1. Obtain a Fill it Forward bottle or place a Fill it Forward sticker on your reusable 2. Download the app and sign up with your email address 3. Scan the sticker every time you reuse Shop our products at fillitforward.com APP FEATURES: Contribute To Meaningful Charitable Projects --- Every time you scan your Fill it Forward sticker, we contribute to charitable projects around the world. You can track the progress of the projects and we’ll update you as projects are completed. Help Build The Fill it Forward Community With Groups --- Join Fill it Forward open groups to track your collective impact and check out which users are leading the way with the group’s leaderboard. Track Your Environmental Impact --- Every time you reuse, you are making a positive environmental impact. With the Fill it Forward app, you can easily track waste diverted, emissions saved, and how much ocean pollution you have prevented. Stay Hydrated --- Track your beverage consumption throughout the day. We make it easy to set goals and reminders so you always meet your hydration goals. Obtain Status --- Continue scanning to work through a series of status levels that provide promo codes to our store as well as other partner discounts Join Community Draws --- Every scan automatically enters you into a draw with different prizes every month Find where to fill up --- Use our refill map to find hundreds of thousands of refill stations across the world Engage with friends --- Add friends and compare stats with our extended community features
MDex
This app helps University of Michigan students navigate campus life. It provides real-time bus tracking, event discovery, and connects users with campus clubs and communities. Access campus resources and giveaways to enhance your student experience.
- Discover campus events
- Real-time bus tracking
- Connect with clubs
- Access campus resources
- Find giveaways
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MDex – The #1 Student Life App at U-M! Welcome to MDex, the #1 way to experience student life at the University of Michigan. Discover what’s happening across campus, track U-M and Ann Arbor buses in real time, and stay connected with the clubs, events, and communities that make Michigan incredible. From campus resources to giveaways — MDex puts everything you need for the true Michigan experience right at your fingertips. Join thousands of Wolverines already using MDex. Go Blue!
Screenshots
Verdict
The clearest difference is review sentiment: MDex at 100% against Fill it Forward's 38%. MDex also leads on rating (4.9 vs 3.4) and ratings volume (89 vs 16). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
MDex holds the better App Store score, 4.9 against 3.4. That said, the two scores are not equally well evidenced: MDex has 89 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 38% of Fill it Forward's written reviews are positive against 100% of MDex's.
Fill it Forward ships an update monthly, MDex every 3 weeks. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.
| Parameter | Fill it Forward | MDex |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (16 ratings) | 4.9 (89 ratings) — better |
| Positive reviews | 37.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 | 89 — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 12.4 — better |
| Further details — not scored | ||
| Size | 184 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Green Menu Inc. | Julius Stuhec |
Customer experience
Fill it Forward
MDex
Bugs and requests
Fill it Forward
Reported bugs
15 issues- Camera scanner won't focus or read QR codes
- App crashes immediately after scanning
- White/blank screen appears on app launch
- Reuse data shows zero or incorrect values
- Profile picture cannot be saved
Show 10 moreShow fewer
- App freezes when checking group status
- Scanner shows black screen instead of camera feed
- Scanning count doesn't update properly
- App incompatible with iOS 13 and newer versions
- Login screen fails to load
- Microphone permission required unnecessarily
- Timezone awareness issues with day tracking
- Data wipes after password reset
- Leaderboard data not syncing across devices
- Help/contact feature requires external email app
Requested features
12 requests- Add friends and create private group competitions
- Monthly/yearly impact statistics and history logs
- Daily water intake tracking by day/month/year
- Integration with Apple Health app for water tracking
- Support for multiple bottles with different sizes
Show 7 moreShow fewer
- Push notifications for hydration reminders
- Monetary donation total visibility in profile
- Tap-to-log feature as alternative to barcode scanning
- Keychain attachment option instead of stickers
- Offline logging capability with sync when service returns
- Ability to change bottle size beyond 999ml limit
- Global impact dashboard showing worldwide progress
MDex
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fill it Forward
No in-app purchases
MDex
No in-app purchases









