PAKEDOU
Network Packet Simulator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Place 14 network devices on a canvas - routers, switches, firewalls and more. Watch packets flow, see where they drop and why. Great for CCNA prep and engineer training.
PAKEDOU is a simulation app that visualizes network packet flow in real time.
Place and connect 14 types of network devices - Router, L2 Switch, Firewall, Load Balancer, NAT, DNS Server, WAF, CDN, and more - on a canvas, and watch HTTP, DNS, ICMP, ARP, and TCP packets flow through your topology with animations.
[Who is this for?]
- Anyone who wants to visually understand how networks work
- Students preparing for CCNA, CompTIA Network+, or similar certifications
- Trainers looking for hands-on teaching material for new engineers
- Anyone who wants to learn routing, NAT, and VLAN by doing
[Two modes for progressive learning]
Simple Mode: Packets are delivered just by connecting cables. Routing and MAC resolution are automatic. Even networking beginners can start exploring immediately.
Realistic Mode: Simulates real network behavior. Requires routing table configuration, default gateways, ARP resolution (broadcast request -> unicast reply), TCP 3-way handshake (SYN -> SYN+ACK -> ACK), and DNS name resolution.
[Educational feedback]
When a packet is dropped, the app shows "Why it failed" with an explanation and a hint to fix it. On timeout, a device-type-specific explanation is auto-generated based on where the packet got stuck.
[Key Features]
- 14 network device types (Client, Server, Router, L2/L3/VLAN Switch, Firewall, LB, NAT, DNS, WAF, CDN, Proxy, Internet)
- Color-coded protocol display: HTTP, DNS, ICMP, ARP, TCP
- Device configuration (IP/subnet, routing table, ACL rules, VLAN ID, DNS A records, NAT rules, etc.)
- Tap a log entry to expand L2-L7 packet details
- Manual/auto packet send (choose protocol, source, destination)
- Domain-based send (auto DNS query -> HTTP send for real-world flow experience)
- SQL injection and XSS attack packets (for WAF testing)
- Save/load topology (Free 1 slot / Pro 5 slots)
- Playback speed control (0.25x-10x)
- Pinch-zoom and pan navigation
- First-launch tutorial (6 swipeable pages, each with a built-in Canvas animation)
- Starter topology auto-load (Client -> L2 Switch -> Server placed right after the tutorial)
- UI in 16 languages (Japanese, English, Simplified Chinese, Traditional Chinese, Korean, Spanish, Brazilian Portuguese, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai, Vietnamese) auto-detected from device locale
[Today's Outage]
Every day, one broken network arrives. Send packets, read the logs, fix the settings, then check your answer. Every challenge is verified by the simulator itself before it is published: it is guaranteed to be broken and guaranteed to be fixable. Inside the day's challenge, Free users can also operate Pro devices (Firewall, DNS Server, VLAN Switch, Load Balancer, WAF). After clearing it, share your move count, hints used and time. Offline, 14 bundled challenges are always available. Story, hints and explanation come in all 16 languages. Pro users can also replay the past 30 days.
[Free / Pro]
Free: 5 device types, max 5 devices, 1 save slot, with ads
Pro (one-time purchase, price shown in the store): all 14 device types, unlimited devices, 5 save slots, no ads, detailed logs, past 30 days of Today's Outage
Already purchased? Tap "Pro" in the toolbar, then "Restore Purchase".
[Privacy]
Topologies you create are stored locally on the device, and the app itself does not send your data to external servers. The Free version displays Unity Ads, whose SDK collects device identifiers and similar data. See our privacy policy for details.
Ads are shown only after you choose whether to allow personalized ads on first launch, and you can turn personalized ads off at any time under "?" > "Ad settings".
- Ads: banner ads in the Free version are now served by Pangle. You can change whether ads are personalized at any time under "?" > "Ad settings"
- The app's screens are now fully translated into Hindi, Indonesian, Russian, Italian, Turkish, Thai and Vietnamese
- Layout fixes for narrow screens (small iPhones, iPad Slide Over / Split View) and for iPhone in landscape
- Realistic mode: after you fix a route, the next HTTP send starts a new connection right away; changing a port's IP address takes effect immediately
- The help guide's "Simulation Controls" section now describes the current buttons
- Bug fixes and stability improvements
The developer, Fuji Bit Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Fuji Bit Inc.
- Size
- 13.7 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 15 more
- English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Fuji Bit