Smart Case vs KINGZER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Smart Case
Personalize your phone case with a dynamic e-ink display. Sync photos, text, QR codes, to-do lists, and weather directly to your case for easy access and improved efficiency.
- Sync photos and text
- Display QR codes
- Integrate to-do lists and calendars
- DIY dynamic views with custom fonts and colors
- E-ink screen image enhancement
- Import business cards
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Through the Smart Case "Smart Phone Case" app, you can sync your favorite photos, text, QR codes, to-do lists, calendars, and weather to the e-ink screen on your phone case and display them. It comes with many interesting and practical theme wallpapers: popular memes, touching copy, motivational quotes, work lists, cartoons, national style graphics and texts, and anime, everything you need is here. DIY Dynamic View: You can add your favorite images and text, and freely set the font, color, direction, and size to create a unique dynamic view for yourself. Using an e-ink screen image quality enhancement algorithm, four-color display, clearer details and edges, more natural gradients, presenting illustrations and portraits closer to the real effect. Convenient Code Display: It's very tedious to open various QR codes every day. You can transfer your frequently used QR codes to the e-ink screen on the phone case for display, and scan the code by showing the e-ink screen. WeChat QR code, payment code, service code can all be scanned. Improve Work and Life Efficiency: You can import to-do items, schedules, business cards, and other information to the e-ink screen to improve work and life efficiency.
KINGZER
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NFC Passive Ink Screen Phone Case Projection Tool Software
Screenshots
Verdict
Smart Case and KINGZER are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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 | Smart Case | KINGZER |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 102 MB |
| Age rating | 9+ | 17+ |
| Developer | 波 宁 | 召 李 |
In-app purchases
Smart Case
No in-app purchases
KINGZER
No in-app purchases









