# Instructions - Keep Manuals — Offline PDF Viewer & Organizer

> Offline PDF Viewer & Organizer (iPhone/iPad app by Kazuhisa Kobayashi.)

- Source: https://appshunter.io/ios/app/instructions-keep-manuals/id6477866291 (this page in markdown: same URL + `.md`)
- Developer: [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.0 · 15 MB
- Languages: American English, German (Germany), Japanese
- Released: 2024-02-21
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/instructions-keep-manuals/id6477866291/reviews.md

## What is Instructions?

Key Features
- Register, save, search, and share PDFs
- Import PDFs shared from other apps
- Organize PDFs into categories
- No account required
- Supports web page registration
- Simple and intuitive interface

Keep manuals and technical documents at your fingertips—offline!

This app lets you register and manage PDF manuals and reference materials so you can search and read them anytime, even without an internet connection. You can also bookmark websites for quick online access when needed.

Perfect for professionals and tech users who want to organize manuals, guides, and documentation in one place—and stay productive, even when offline.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |



## Version history (last 5 releases)

### 2.12.5 — 2026-08-09

Bug fixes and performance improvements.

### 2.12.4 — 2026-07-08

Bug fixes and performance improvements.

### 2.12.3 — 2026-07-01

Fine-tuned the UI to automatically clear the list editing mode when switching screens for a smoother experience.

### 2.12.2 — 2026-06-20

Optimized the data loading process for a smoother and faster app launch.
Enhanced internal data management to improve security and prevent accidental modifications or data loss.

### 2.12.0 — 2026-04-28

Added an in-app purchase option to remove advertisements.

## Apps similar to Instructions

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [HiToko](https://appshunter.io/ios/app/hitoko/id1573205753) | — | Free | Utilities |
| [FreshManuals](https://appshunter.io/ios/app/freshmanuals/id1627091250) | 5.0 (5) | Free | Utilities |
| [Bookmarks - Manage favorites](https://appshunter.io/ios/app/bookmarks-manage-favorites/id1554834738) | 4.8 (11) | Free | Utilities |
| [Repeat Checklist MONOLIST](https://appshunter.io/ios/app/repeat-checklist-monolist/id1612361641) | 5.0 (3) | Free | Utilities |
| [The Repair Manual](https://appshunter.io/ios/app/the-repair-manual/id6742143010) | — | Free | Utilities |
| [Instruction Manual Generator](https://appshunter.io/ios/app/instruction-manual-generator/id1591712505) | 1.0 (1) | Free | Utilities |

## More apps by Kazuhisa Kobayashi

- [Easy Print Address](https://appshunter.io/ios/app/easy-print-address/id1580881998)
- [Housie Bingo Card Maker](https://appshunter.io/ios/app/housie-bingo-card-maker/id1597237424)
- [SlideSnap: Photo Tile Puzzle](https://appshunter.io/ios/app/slidesnap-photo-tile-puzzle/id1623936202)
- [CSV Master](https://appshunter.io/ios/app/csv-master/id1633580928)
- [Kitchen Timer Clock](https://appshunter.io/ios/app/kitchen-timer-clock/id1645240832)
- [Show IDFA](https://appshunter.io/ios/app/show-idfa/id1658957983)

All apps by Kazuhisa Kobayashi: https://appshunter.io/developer/1580882000

## Related topics

[instructions](https://appshunter.io/ios/topics/instructions)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*