LSIS SmartViewer vs SYKeyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LSIS SmartViewer
Monitor LS Sanjeon ACB OCR and Smart MCCB devices via BLE communication. View device events and analyze fault waveforms with graphical representation. Supports ACB OCR S-type and Smart MCCB advanced models.
- BLE communication monitoring
- Device event viewing
- Fault waveform analysis
- Graph display of waveforms
- ACB OCR S-type support
- Smart MCCB advanced support
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LS 산전 ACB OCR 과 Smart MCCB를 BLE 통신으로 모니터링 할 수 있습니다. 각 기기의 이벤트를 확인 할 수 있습니다. 각 기기에 저장된 고장 파형을 그래프로 확인할 수 있습니다. ACB OCR S-type과 Smart MCCB 고급형을 지원 합니다.
SYKeyboard
This keyboard app offers multiple layouts for English and Korean typing, including QWERTY, Naratgeul, Cheonjiin, and Dubeolsik. It features a built-in numeric keypad, one-handed mode, and predictive text with extensive customization options for key repeat, cursor movement, and keyboard dimensions.
- English QWERTY keyboard
- Multiple Korean keyboard layouts
- Built-in numeric keypad
- One-handed typing mode
- Predictive text
- Customizable keyboard settings
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SYKeyboard, a convenient Korean keyboard for iOS Key Features - Naratgeul keyboard - Cheonjiin keyboard - Dubeolsik keyboard - English (QWERTY) keyboard - Korean & English keyboard (switch with the 한/A key) - Built-in numeric keypad - Optional number row - One-handed keyboard mode - Predictive text (learns your frequently used words, shows math results) - Clipboard history (paste text and images, pin favorites) - Undo/Redo buttons - Smart Punctuation - Detailed keyboard settings (key repeat, cursor movement, keyboard height, one-handed keyboard width, letter column width, space bar position, and more)
Screenshots
Verdict
The clearest difference is ads: LSIS SmartViewer at none against SYKeyboard's shown. LSIS SmartViewer also leads on monetization model (free vs ad-supported) and device support (3 vs 1). SYKeyboard's advantage is update cadence (every 3 days vs every 8 days). On price 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.
LSIS SmartViewer ships an update every 8 days, SYKeyboard every 3 days. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | LSIS SmartViewer | SYKeyboard |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 8 days | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | LS ELECTRIC Co., Ltd. | DongHwan Seo |
Customer experience
LSIS SmartViewer
SYKeyboard
In-app purchases
LSIS SmartViewer
No in-app purchases
SYKeyboard
No in-app purchases
