パケ道

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Content rating
Everyone
100+
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Content rating
Everyone
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About this app

Packet Road is a simulation application that visualizes network packet flow in real time.

You can freely place and connect 14 types of network devices, including routers, L2 switches, firewalls, load balancers, NATs, DNS servers, WAFs, and CDNs, on a canvas and see how HTTP, DNS, ICMP, ARP, and TCP packets flow through animation.

【Recommended for:】
- Those who want to visually understand how networks work
- Those studying for certifications such as CCNA or Network Specialist
- Those looking for training materials for new engineers
- Those who want to learn routing, NAT, and VLAN operation hands-on

【Two Modes for Step-by-Step Learning】
Easy Mode: Packets arrive simply by connecting cables. Routing and MAC resolution are automatic. Even network beginners can experience it immediately.

Real Mode: Reproduces operation close to a real network. Routing table settings, default gateway, ARP resolution (broadcast → unicast response), TCP 3-way handshake (SYN → SYN+ACK → ACK), and DNS name resolution are required.

[Educational Feedback]
When a packet is dropped, an explanation of why it failed and correction hints are displayed. In case of a timeout, a specific explanation is automatically generated based on the type of device that stopped the packet.

[Main Features]
- 14 types of network devices (Client, Server, Router, L2/L3/VLAN Switch, Firewall, LB, NAT, DNS, WAF, CDN, Proxy, Internet)
- Color-coded display of HTTP, DNS, ICMP, ARP, and TCP protocols
- Device settings (IP/subnet, routing table, ACL rules, VLAN ID, DNS A record, NAT rules, etc.)
- Tap log lines to expand and display packet details for each layer from L2 to L7
- Manual/automatic packet transmission (specify protocol, source, and destination)
- Domain name specification transmission (experience the actual flow of DNS automatic query → HTTP transmission)
- SQL injection/XSS attack packet transmission (for WAF verification)
- Save/load topology (Free 1 slot / Pro 5 slots)
- Playback speed adjustment (0.25x to 10x)
- Pinch zoom and pan operation
- First launch tutorial (6-page swipe-style, each page has built-in Canvas animation)
- Starter Automatic Topology Placement
- 16-Language UI Support (Japanese/English/Simplified Chinese/Traditional Chinese/Korean/Spanish/Brazilian Portuguese/German/French/Hindi/Indonesian/Russian/Italian/Turkish/Thai/Vietnamese, automatically synchronized with device language)

【Free Version / Pro Version】
Free Version: 5 types of devices, up to 5 units, 1 save slot, ads displayed
Pro Version (¥1,000 one-time purchase): 14 types of devices, unlimited devices, 5 slots, no ads, detailed log display

【Privacy】
Created topology data is stored only on the device, and the app does not independently transmit user data externally. The Free version displays Google AdMob ads, and AdMob collects device identifiers, etc. Please check the privacy policy for details.
Freely place 14 types of network devices, including routers, switches, and firewalls, on the canvas. Experience through animation which path packets take and where they are dropped.
Updated on
Sep 27, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Financial info and 3 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

新機能「今日の障害」を追加しました。
・毎日1問、壊れたネットワークが届きます。パケットを送り、ログを読み、設定を直して答え合わせ
・週末は難問。その日の問題ではFree版でもPro機器を操作できます
・クリアすると手数・ヒント数・タイムを共有できます
・Pro版は過去30日分に挑戦できます
・「すべてのクライアント」から一斉送信できます
・広告の選択:パーソナライズ広告を許可するか選べます(「?」→「広告の設定」)
・各種バグ修正と安定性の向上
Content rating
Everyone
In-App Purchases
Learn more

App support

Phone number
+817090079645
About the developer
FUJI BIT K.K.
kenichi@fujibit.com
2-17-3, TAKADANOBABA TOKYO SANKYO SHINYO KINKO HONTEN BLDG. THE HUB TAKADANOBABA 710 SHINJUKU-KU, 東京都 169-0075 Japan
+81 70-9007-9645

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