LangBook vs PC 110
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LangBook
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Build your Japanese writing habit, one sentence at a time. This app helps you practice Japanese through daily journaling, AI feedback, vocabulary review, and flashcards. Write about your feelings, your day, or a guided topic, then receive feedback on grammar, vocabulary, expression, and natural flow. It is designed for learners who want to write more Japanese, build confidence, and make Japanese study part of their daily routine. ■ Japanese journal Write freely about your day or choose a guided topic when you are not sure what to write. Start small with just one sentence a day. ■ AI feedback Get clear feedback on grammar, vocabulary, expression, and natural flow. The AI helps you make your Japanese sound more natural and easier to understand. ■ Track your progress See your score, study streak, learning time, and skill balance. Visual progress helps you stay motivated. ■ Vocabulary and flashcards Save important words and review them with flashcards. Practice forgotten words and turn them into usable vocabulary. ■ Recommended for: ・Learners who want to write a Japanese diary ・Students who want to improve Japanese writing ・People looking for AI Japanese correction ・Learners who want to practice Japanese grammar and vocabulary ・Anyone who wants to study Japanese every day ・Students who want to review words with flashcards One sentence a day can become tomorrow’s confidence. Start writing in Japanese today. Some AI features require a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://privacyenglsih.bridra.net
PC 110
Explore a virtual museum and emulator for the 1995 palm-size PC. Interact with its hardware, keyboard, and even control it from an Apple Watch. Learn about its design through schematics and historical archives.
- Palm-size PC emulator
- Interactive hardware explorer
- Apple Watch companion control
- 3D mainboard reconstruction
- Schematic navigation
- Historical archive and timeline
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PC110 Atlas is an interactive museum, hardware explorer, and emulator host dedicated to the palm-size PC that arrived in 1995. RUN YOUR OWN MACHINE Bring firmware and system media that you lawfully obtained from your own hardware. Package Import verifies a single ZIP and installs all recognized files together. Advanced Import lets experienced users manage each file individually. No firmware, operating system, or PersonaWare image is included. RUN IT ON MAC Use the complete emulator and research library on macOS 14 or later. Select BIOS, hard-disk, floppy, and CD images with the standard Mac file picker. Imported media remains inside the app sandbox unless you choose another file. USE THE WHOLE KEYBOARD The full PC110 console becomes a touch surface. Every visible key and colored control maps to the emulated machine, including the distinctive Japanese key layout and two-part Enter key. CONTROL IT FROM APPLE WATCH The included Apple Watch companion mirrors the live PC110 display and guest audio from the paired iPhone, provides pointer and keyboard controls, and offers shortcuts for all sixteen original PersonaWare launcher applications. Fit shows the complete display, while zoom and pan make small guest controls easier to read. QEMU and imported media remain on the iPhone. EXPLORE THE HARDWARE Orbit a detailed 3D reconstruction of the mainboard, pinch to zoom, separate the stack, fade individual copper layers, and reveal the component overlays on both sides. Switch to annotated board views to learn how the 486SX, SCAMP IV, Bowman, Pluto, VGA, audio, storage, and PC Card subsystems work together. FOLLOW THE SCHEMATIC Navigate the reconstructed schematic by functional sheet, then zoom and pan through the original vector evidence without relying on optical captures. ENTER THE ARCHIVE Discover the machine through a factual timeline, original design notes, an illustrated PersonaWare history, and direct links to the open hardware project. PC110 Atlas is an independent historical and preservation project. IBM and the IBM logo are trademarks of International Business Machines Corporation. PersonaWare and other product names belong to their respective owners. The app is not affiliated with or endorsed by IBM.
Screenshots
Verdict
The clearest difference is in-app purchases: PC 110 at none against LangBook's 2. PC 110 also leads on update cadence (every 3 days vs weekly) and device support (5 vs 1). On price, ads and iOS requirement 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. LangBook sells 2 in-app purchases, starting at $4.99 per month. PC 110 asks for nothing beyond the download.
LangBook ships an update weekly, PC 110 every 3 days. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.
| Parameter | LangBook | PC 110 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, Mac, Apple Watch, Vision Pro — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 122 MB |
| Age rating | 12+ | 4+ |
| Developer | KOSUKE NAKASONO | Ahmad Byagowi |
In-app purchases
LangBook
- Basic$4.991 Month
- Plus$11.991 Month
PC 110
No in-app purchases









