Navoa vs BK400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Navoa
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Navoa is the boat tracker built for Icelandic waters. Navoa combines live tracking, real AIS-data, an automatic logbook, and a multi-channel SOS system integrated directly with search-and-rescue in Iceland. No third-party dispatcher. No detours. Just you, your boat, and a safety net that's always on. Whether you're cruising on a calm summer evening or fishing near the coast, Navoa keeps you connected, visible, and logged. YOUR SAFETY NET AT SEA: Navoa's multi-channel SOS is designed for the moments you hope never come. One tap sends your alert to three channels at once: • The Icelandic Coast Guard - direct SAR integration, no third-party dispatcher in between • Your emergency contact - notified instantly by SMS • Nearby Navoa users - vessels actively tracking within 30 nautical miles receive a push notification You'll see the status of every alert in real time: server received, coast guard contacted, emergency contact notified, nearby vessels alerted. Because in an emergency, knowing your call was heard matters. LIVE AIS IN ICELANDIC WATERS: See what's around you right inside Navoa. • Detailed AIS coverage of Icelandic waters • Data from both satellite and terrestrial stations • Tap any vessel for name, MMSI, type, dimensions, speed, and last seen • Know who's near you before you can see them on the horizon BE SEEN BY THE PEOPLE WHO CARE: • Share your live position publicly on navoa.is • Family and friends can follow your trip from shore with no app required, all shown on navoa.is • Start tracking with a single tap AN AUTOMATIC LOGBOOK FOR EVERY TRIP: Every trip is logged for you. No notebooks needed and no manual entries. • Full route on a map for every voyage • Distance, duration, and average speed recorded automatically • Browse your trip history any time • Share any trip with a tap BUILT FOR ICELAND: Navoa isn't a global app adapted for Iceland - it's built here, for these waters, these conditions, and this coastline. From integration with Icelandic search-and-rescue to AIS coverage tuned for Icelandic waters, everything in Navoa exists to make sailing here safer and simpler. Cast off. We'll keep the log. Download Navoa and make every trip on the water safer, smarter, and remembered. Note: SOS and tracking features require an active internet or data connection. Navoa is a supplementary safety tool and does not replace required marine safety equipment or official emergency procedures.
BK400
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BK400 is a professional Bluetooth car battery diagnostic tool. Connect to BK400 hardware via Bluetooth to monitor real-time voltage, plot live curves, and perform cranking tests, charging tests, and waveform analysis to fully evaluate battery health. Schedule automatic voltage sampling tasks and review historical data with interactive charts across customizable date ranges. Manage multiple devices simultaneously with fully isolated data. Built-in OTA firmware updates keep your device current. Use the vehicle finder to locate your car on a map. Generate professional diagnostic reports with one tap and share them with customers. Supports 15 languages for users worldwide. BK400 是一款专业的汽车蓄电池蓝牙智能检测工具。通过蓝牙连接 BK400 硬件设备,您可以实时监控电池电压、绘制电压曲线,并进行启动测试、充电测试和波形测试,全面评估电池健康状态。支持静态电压采集和定时任务,自动记录历史数据并生成可视化图表,支持按日期范围查看趋势。多设备同时管理,数据完全隔离互不干扰。内置 OTA 固件升级功能,确保设备始终运行最新版本。寻车功能通过地图标注设备位置,轻松找到您的车辆。一键生成包含启动测试与充电测试数据的专业检测报告,方便分享给客户。支持 15 种语言,满足全球用户需求。
Screenshots
Verdict
The clearest difference is update cadence: BK400 at weekly against Navoa's every 2 weeks. BK400 also leads on iOS requirement (15.0 vs 18.0). 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.
Navoa ships an update every 2 weeks, BK400 weekly. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.
| Parameter | Navoa | BK400 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 21 MB |
| Age rating | 17+ | 4+ |
| Developer | Arctic Applications | 祖策 谢 |
In-app purchases
Navoa
No in-app purchases
BK400
No in-app purchases









