D vs i视康
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
Keep track of significant dates and events with this reminder app. It offers custom backgrounds, event categorization, and the ability to share or save events. Widgets are also available for quick access.
- Event reminders
- Share events
- Save events to photo library
- Repeat events
- Backup and recover events
- Custom event backgrounds
- Categorized events
- Event widgets
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This is D-Day counter and widget. Help you remember important date and event. Features: 1. Event reminder 2. Share event 3. Save event to photo library 4. Repeat event 5. Backup event 6. Recover event 7. Custom event background 8. Categorised events 9. View event widget
i视康
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i视康,一款预防儿童青少年近视平台app.
Screenshots
Verdict
The clearest difference is in-app purchases: i视康 at none against D's 1. D's advantage is update cadence (every 2 months vs every 40 months). 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. D sells 1 one-off in-app purchase. i视康 asks for nothing beyond the download.
D ships an update every 2 months, i视康 every 40 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | D | i视康 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months — better | Every 40 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 64 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Wing Yin SO | 亮 董 |
In-app purchases
D
- D-Day$0.99
i视康
No in-app purchases
