Houji vs PDF AutoScroll
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Houji
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houji is japanese custom. This App calculate houji_days.
PDF AutoScroll
Effortlessly read long documents, papers, or sheet music with smooth, hands-free auto-scrolling. This PDF viewer enhances focus by eliminating manual page turns and offers features like dark mode, highlighting, and quick navigation.
- Smooth auto-scrolling with speed control
- Dark mode for comfortable reading
- Highlighting and instant jump to highlights
- Table of contents for quick navigation
- Search functionality
- Bookmarks and automatic last-position restore
- Recent PDF reopening
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Hands off. Just read. With a single tap, smooth auto-scroll begins. From research papers, textbooks, and documents to sheet music, stay focused on reading. Keep your hands on your instrument and your eyes on the score. Read, rehearse, or present at your own pace with PDF AutoScroll. Key Features (Included) PDF reading and basic auto-scroll are included with the paid app. • Smooth auto-scroll, precise speed control, and up/down direction • Search, highlights, bookmarks, table of contents, and Dark Mode • Recent PDFs, favorite folders, and last-position restore Extra Features (Optional) • A different speed for each page and a start delay • Page margin trimming • Repeat, next-PDF playback, and saved PDF lists • Side-by-side PDF reading on iPad and Mac (In-App Purchase) Pro: annual subscription or one-time lifetime purchase. Eligible annual subscribers can try 7 days free. Price and offer are shown before purchase. Annual subscriptions renew automatically unless canceled in your Apple account settings. Bought the paid app or a bundle before version 1.3? You keep Pro without paying again. Use Restore Purchases if needed. Privacy • No account required. Your PDF files are read on your device. Device Support • iPhone, iPad, Mac • App and setup guide in 32 languages [Get started] Open a PDF, tap Play, and adjust the speed. Pause whenever you want. Notes Margin trimming changes only the reading view. Your original PDF and shared file stay unchanged. - Contact: help@paran.app - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://paran.app/privacy-policy/
Screenshots
Verdict
The clearest difference is update cadence: PDF AutoScroll at every 2 weeks against Houji's every 7 months. PDF AutoScroll also leads on device support (3 vs 1). Houji's advantage is price ($1.99 vs $5.49). On ads, in-app purchases 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
Houji costs $1.99 and PDF AutoScroll $5.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Houji ships an update every 7 months, PDF AutoScroll every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Houji | PDF AutoScroll |
|---|---|---|
| Price | $1.99 — better | $5.49 |
| Rating | — | 4.3 (7 ratings) — better |
| Positive reviews | — | 55.6% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 7 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 16.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | her0.jp | Paran |
In-app purchases
Houji
No in-app purchases
PDF AutoScroll
No in-app purchases
