EcoLogical vs OhMy Dday
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EcoLogical
Discover local venues offering discounts and rewards for using reusable cups and bags. Track your eco-friendly choices, learn about their environmental impact, and connect with like-minded individuals through sustainability events.
- Find venues with reusable item discounts
- Earn and track rewards
- Learn environmental benefits of choices
- Compare eco-impact to daily behaviors
- Create and join sustainability events
- Connect with planet-loving users
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EcoLogical app makes it easier for you to make planet-loving choices at daily venues like coffee shops, boba shops, bakeries, and more. Currently, we do it by helping you unlock the full potential of your reusable cups and bags. You can easily locate stores offering discounts and rewards for bringing your own reusable gear to replace disposable supplies. Then, make a claim that you've brought your own gear and earn those discounts and rewards. Earned rewards at multiple stores can be tracked and managed easily in just one app. Once the rewards reach certain level, they can be redeemed for different items offered at each participating store. You can also learn the environmental benefits linked to each of your eco-friendly choices and track them over time to improve your choices at daily venues. The carbon emissions and waste reduction benefits are scientifically assessed based on life-cycle analysis framework on EcoLogical app. You can also learn how those environmental benefits compare to different daily behaviors generating carbon emissions and waste. To connect people who value environment, EcoLogical app also allows you to create sustainability-themed events to meet other users. Create or join one to have a chat with other planet-loving people at the same institution or in your local and recognize each other for making good choices for our planet. Although we are currently focused on reducing disposable wastes from daily venues, we have a future plan to address many other planet-helping consumer choices. Stay tuned for those!
OhMy Dday
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OhMy Dday is a local counter app for D-Days (days remaining) and anniversaries (days elapsed, "D+Day"). How to test the core features: 1. On Home, tap '+' → enter a title and date → save to create a D-Day card. 2. Toggle the calculation type: D-Day (countdown) vs D+Day (count-up). 3. Enable "Yearly" repeat to schedule a local notification at 9 AM each year (expo-notifications). 4. Tap a card → "Share as image" to generate a shareable card (react-native-view-shot + the system share sheet). 5. Add the iOS Home Screen widget to surface the featured D-Day. - All calculations and storage happen on-device; there is no external server communication. - Banner ads: Google AdMob (bottom banner). - Notification permission is requested only when the user turns on "Get notified".
Screenshots
Verdict
The clearest difference is ads: EcoLogical at none against OhMy Dday's shown. On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | EcoLogical | OhMy Dday |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 63 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | EcoLogical App LLC | soon jeong Lee |
In-app purchases
EcoLogical
No in-app purchases
OhMy Dday
No in-app purchases









