SK모바일ID vs Prefrontal Focus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SK모바일ID
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■ 주요기능 “SK모바일ID”는 SK쉴더스가 제공하는 기계경비서비스(방범서비스)나 출입통제서비스를 이용하는 고객에게 제공되는 설치기기 조작용”어플리케이션 카드”이며 SK쉴더스에서 대상 고객에게 통상적으로 제공하는 플라스틱 카드와 동일한 기능을 가지고 있습니다. ■ 앱에서 사용하는 접근권한 안내 - 블루투스(필수) 블루투스 통신 및 출입 기기와의 통신을 위해 사용합니다. - 위치(필수) 통신모드에 따라 출입 기기와 통신을 위해 사용합니다. - 카메라(선택) 카드 이미지 데이터 저장 및 사원증 사진 촬영을 위해 사용합니다. - 알림(선택) 알림 수신을 위하여 사용합니다. ※ 필수 권한을 허용하지 않으면 앱이 정상적으로 작동하지 않을 수 있으며, 선택 권한은 허용하지 않아도 해당 기능 외 서비스 이용이 가능합니다. ※ 설정에서 이 권한에 대한 엑세스를 중지할 수 있습니다. 앱을 업데이트하면 각 그룹 내에 부가 기능이 자동으로 추가될 수 있습니다.
Prefrontal Focus
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Prefrontal Focus is a local-first tool for general attention, visual search, and visual tracking practice. No account is required. Start Today’s Training immediately, or use Free Training to practice at your own pace. Training • 10 modes: Classic Search, Reverse Search, Red-Black Switching, Moving Search, Rotation Search, Reshuffle Search, Open Search, Interference Search, Visual Tracking (MOT), and position memory • Today’s Training combines a daily set of activities with fewer decisions • Free Training lets you adjust grid size, object count, target count, movement speed, and other mode parameters • Records show session count, time, accuracy, trends, and results by mode • Light, dark, and system appearance options • Simplified Chinese, Traditional Chinese, English, Japanese, and Korean Privacy and data Training records and settings stay on this device by default. The app requires no account, uses no advertising or third-party analytics SDKs, and does not upload training records. Purchases are handled by Apple StoreKit, with Restore Purchases available. Pro On first normal use, a one-time 72-hour full Pro experience starts locally on the device. It requires no purchase, makes no charge, does not auto-renew, and never converts into a paid subscription. After it ends, you may choose an annual auto-renewable subscription or a one-time lifetime purchase. Prefrontal Focus is for general attention, visual search, and visual tracking practice. It is not a medical product and is not intended to diagnose, treat, or prevent disease, or replace professional medical advice. Terms of Use (EULA) This app uses the standard Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ After complimentary access expires, an active Annual Pro subscription or a Lifetime Pro purchase is required to continue daily training, free training and all training modes. Records, settings, Restore Purchases and legal pages remain accessible.
Screenshots
Verdict
The clearest difference is in-app purchases: SK모바일ID at none against Prefrontal Focus's 2. SK모바일ID also leads on iOS requirement (12.0 vs 17.0). Prefrontal Focus's advantage is update cadence (every 6 weeks vs every 4 months). On price, ads and device support 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. Prefrontal Focus sells 2 in-app purchases, starting at $9.99 per year. SK모바일ID asks for nothing beyond the download.
SK모바일ID ships an update every 4 months, Prefrontal Focus every 6 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.
| Parameter | SK모바일ID | Prefrontal Focus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 54 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ADT CAPS Co.,LTD. | 惜徐 彭 |
In-app purchases
SK모바일ID
No in-app purchases
Prefrontal Focus
- Annual Pro$9.991 Year
- Lifetime Pro$19.99








