KEV vs Biifore
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KEV
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KEV(케브) 는 클린일렉스에서 제공하는 전기차 충전 및 충전소 검색 어플입니다. KEV에서 회원가입시 전화번호 개인정보를 수집합니다. 수집 목적은 아이디/비밀번호 분실 시 본인 인증 용도, 회원 캐시 자동 적립시 문자 발송, 로밍 정산 시 사용내역과 요금 문자 발송, 캐시 환불 처리결과 안내 연락수단용도, 고장신고 진행중 또는 처리완료시 안내 연락수단 용도 입니다. 전화번호 수집을 거부하셔도 비회원 모드로 어플을 이용하실 수 있습니다. KEV는 어플과 충전기의 실시간 통신으로 편리하고 직관적인 충전 및 충전 이력 관리등 차별화된 서비스를 제공합니다. KEV는 24시간 통합 콜센터 및 관제시스템 운영을 통해 친환경 전기차 충전 인프라 사업을 선도합니다. 1. 국내 최고 전기차 충전 인프라 1) 설치/운영 전문 기업의 노하우 2) 전국단위 관리 체계 구축 3) 24시간 고객 서비스 센터 운영 (1811-1360) 2. 최적의 운영 서비스 1) 스마트폰 어플을 통한 편리하고 직관적 사용자 환경 제공 2) 제안 충전기/타 제조사 충전기와 NB-IoT 통신 모두 수용 3) 부분 개방시 건물주 요청에 따라 0%~80% 수익 부가 ---- 개발자 연락처 : KLINELEX CO.,LTD 대한민국 15845 경기도 군포시 공단로140번길 35, 1층~5층(당정동) 123-86-46166 2023-경기군포-00713 경기도 군포시
Biifore
Monitor your electric vehicle's battery health proactively. Get a quick and accurate assessment of battery deterioration without needing to visit a service center. Regular use ensures more precise diagnostics for a greener and safer tomorrow.
- Proactive EV battery care
- Fast, simple, accurate assessment
- No service center visit required
- Diagnoses within 1 minute after charging
- Monitors current and future battery states
- Uses patented HEI technology
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Biifore's very first version is available now! Greener Today, Safer Tomorrow! The battery, that can be analogized as the heart of an electric vehicle, also requires proper care for its health state. "Umm… it had a lot of lifetime left, but suddenly it seems to be decreasing. What’s going on?" "The charging capacity doesn't seem the same as before... Is something wrong?" "It still feels healthy, so why is its lifespan is indicated decreasing?" Even if you have doubts about your battery's condition, have you ever hesitated to ellaborate it due to the inconvenience and cost of a service center visit? Biifore, utilizing HEI's patented technology, provides a fast, simple, and accurate assessment of your EV battery deterioration, for both current and future states. You don’t need to visit a service center. Simply, just charge your EV as usual. You will receive a health diagnosis of your EV’s battery within just 1 minute after charging. That’s it. No extra devices, processes, or energy consumption are needed. One thing to note. Use Biifore on a regular basis, for more accurate diagnostics! Required Permission: Location - Used to determine the user's current location in order to provide nearby charging station locations. Notifications - Required to provide calculation results after charging. Customer Support: Email: contact@thinkhei.com Phone: 070-4518-0541
Screenshots
Verdict
The clearest difference is update cadence: Biifore at every 3 weeks against KEV's every 6 months. KEV's advantage is iOS requirement (15.6 vs 18.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
KEV ships an update every 6 months, Biifore every 3 weeks. The most recent releases landed on September 13, 2026 and August 15, 2026 respectively.
| Parameter | KEV | Biifore |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 7 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Klinelex Co., Ltd. | HEI Corp. |
In-app purchases
KEV
No in-app purchases
Biifore
No in-app purchases








