# Homeowner's Notebook — See drawing & estimate changes

> Unofficial home owner's notebook for document management and revision tracking. (iPhone/iPad app by Smartolio.)

- Source: https://appshunter.io/ios/app/homeowners-notebook/id6761674540 (this page in markdown: same URL + `.md`)
- Developer: [Smartolio](https://appshunter.io/developer/1890798107)
- Category: Lifestyle, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 121 MB
- Languages: American English, Japanese
- Released: 2026-04-15
- Data updated: 2026-10-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/homeowners-notebook/id6761674540/reviews.md

## What is Homeowner's Notebook?

An unofficial app for Ichijo Komuten home owners.

Just import PDFs of drawings, estimates, and specifications, and the app covers centralized document management through version comparison. Catch revisions to your drawings that slipped past you, and see exactly which line items in your estimate changed and by how much — all from one phone, with one hand.

Your imported drawings, estimates, notes, and other data stay only on your phone. Nothing is sent over the internet. Data is sent to a server only in these two cases (drawings, estimates, and notes are never sent):
- Sharing for the Maintenance list: the data needed for sharing and notifications, such as the list itself and your display name
- Submitting to Class: your monthly electricity numbers and home details (insulation zone, floor area, etc.)
(Apart from that, information collected is limited to what is needed for ad serving and statistical analytics.)

■ Document management
Automatically organizes every file by drawing number. You won't get lost no matter how many revisions pile up.

■ Drawing comparison
Compare two versions of CAD or electrical drawings pixel by pixel. Additions appear in blue, deletions in red. Includes position adjustment and size alignment. Spot unexpected changes you might otherwise miss. Other documents such as lighting specs and color renderings can be compared too.

■ Estimate comparison
Automatically parses estimate PDFs and shows the cost difference between two versions in a summary. A trend table also lets you view amount changes across multiple versions at a glance. (Estimates must be in Japanese format.)

■ Specification check
Automatically detects changes in equipment specifications and shows the differences color-coded by item. (Specifications must be in Japanese format.)

■ Uchimemo+ (Quick notes)
Long-press anything while reviewing drawings or estimates to leave a note. You can also export the notes you've prepared for your next meeting.

■ Electricity Report
Useful even after move-in. Just import the CSV from i-Sapo to visualize your "total savings" from solar generation and battery storage. See your selling income, self-consumption savings, and battery savings together in monthly, yearly, and cumulative views.
Submit your monthly numbers to Class to see how your generation, bill, and more rank among homes that submitted (optional).

■ Maintenance
Check off recurring home maintenance — ventilation filters, range hood, and more — with one tap. 42 built-in presets with adjustable intervals, plus consumables inventory tracking and reminder notifications. A home-screen widget shows tasks due now and soon, and supplies running low.
Share maintenance items, rooms, supplies, records, and assignees with your family, partner, or anyone who looks after the home with you. Only the person who starts sharing needs Premium; invited members join for free.

■ Other features
Bookmarks (shortcuts to drawings, estimates, and comparison results), Schedule (home-building milestone tracker with a home-screen countdown), My Page, and more.

■ Premium (one-time purchase)
- Save as many drawing numbers as you like
- Start sharing the Maintenance list with your family
- No ads
From November 1, the free version asks you to swap out an older drawing number when you save a new one (no swap is needed while you have fewer than 3). Drawing comparison, estimate comparison, specification check, and the other features stay available in the free version.

[Highlights]
- Drawings, estimates, and other documents are processed on your device (no external server)
- Optional sharing for the Maintenance list (only the data needed for sharing and notifications is synced)
- ZIP-based backup and restore
- CSV export for various data

* This is not an official Ichijo Komuten app. It is an unofficial tool with no affiliation to Ichijo Komuten Co., Ltd.
* If Ichijo Komuten changes its document formats, parsing may not work correctly.

## Key features

- Centralized document management
- Version comparison for drawings and estimates
- Automatic parsing of estimate cost differences
- Specification change detection
- Quick note-taking and export
- Solar generation savings visualization
- Home-building milestone tracker

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium | $2.99 | one-time |
| Medium tip | $2.99 | one-time |
| Small tip | $0.49 | one-time |
| Large tip | $5.99 | one-time |


## Is Homeowner's Notebook safe?

Not enough ratings yet to assess Homeowner's Notebook.

## Is Homeowner's Notebook legit?

Homeowner's Notebook has limited verification signals. The AppsHunter Legitimacy Score for Homeowner's Notebook is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/homeowners-notebook/id6761674540/reviews.md

### 5/5 — 入居後のフィルターやそうじ管理までできます！！

*2026-06-24*

非公式ならではの、入居者にとって便利な機能があります。
太陽光発電、電気代の計算ツールもありがたい上に、
入居後の、フィルター交換・掃除推奨時期が、自分で設定できたり、リマインダーがあり、助かります。
家の鍵の電池切れ、リクシル浄水機の交換時期なども設定して、ストレスなく準備できるように工夫して使っていきたいです。
アプリのアップデートありがとうございます！
施主さまのよいお家が完成しますように！

**Developer response:** レビューありがとうございます🙌
「入居後も使える」点を評価していただけてとても嬉しいです。引渡しで終わるアプリにしたくなかったので、ご利用いただけてよかったです！
これからも改善していきますので、よろしければ長く使っていただけると幸いです。

### 5/5 — 本当に便利

*2026-06-08*

家族が全く図面や資料を確認しない人だったので自分1人で毎回一条から上がってくる資料の確認をしていました。いよいよ着手承諾、というタイミングでこちらのアプリを知り活用させていただきました。どこが変わったか一目瞭然で助かりました。プレッシャーと疲労で、もう図面を見るのも嫌になってなかなか腰が上がらない状態になっていたので、このアプリに本当に助けられました。生成AIに読み込ませて比較するには個人情報を隠す手間発生しますが、このアプリはそれをしなくて良い点も心理的なハードルが下がりました。素敵なアプリを開発してくださりありがとうございます。

**Developer response:** こんなに丁寧なレビューをいただけて、本当にありがとうございます🙇

着手承諾前の状況で「助けられた」と言ってもらえるのは、作った側としてこれ以上ないお言葉です。個人情報をアプリ外に出さずに使える設計にしてよかったと改めて思いました。

この先のイベントにも寄り添えるように機能を育てていきますので、よろしければ使い続けていただけると幸いです。引き続きよろしくお願いいたします。

### 5/5 — 神

*2026-04-30*

こんなものを待っていた

**Developer response:** レビューありがとうございます！「こんなものを待っていた」というお言葉、開発の励みになります🙌

一条施主の方にとって本当に役立つアプリを目指して、これからも機能追加・改善を続けていきます。お気付きの点や「こんな機能が欲しい」というご要望があれば、ぜひお寄せください！

### 5/5 — 一条施主必須アプリです

*2026-04-28*

打合せ中の施主にはほぼ必須くらいに便利なアプリです。図面や見積りなど前回からの変更点がとてもわかりやすいので、サイレントフィリピンの防止にもなります。またそれらの情報もアプリ内で完結しているので流出の心配もありません。私は引き渡し後の施主ですがでんき通信簿機能で太陽光でどれだけ得したか、つい毎日開いてしまいます。他にも便利機能が搭載されており、引き渡し後でもとても重宝しています。

**Developer response:** レビューありがとうございます🙏

サイレントフィリピン対策、まさにアプリ開発のきっかけでした。
さらに「アプリ内で完結している」点まで気付いていただけて本当に嬉しいです✨

引き渡し後はでんき通信簿で太陽光の成果を見るのが楽しい時間になりますよね
メンテナンス管理機能などアップデートも予定していますので、 気付いた点があればぜひお知らせください！

### 5/5 — めちゃくちゃ楽しい

*2026-04-27*

引き渡し済み施主ですが非常に楽しいアプリです。特にでんき通信簿が大好きで他の施主と毎月見せ合いっこしてます。

**Developer response:** レビューありがとうございます🙏

「見せ合いっこしてる」というキーワードに、めちゃくちゃ嬉しい気持ちになりました🎉 
それこそが、でんき通信簿で実現したかった遊びそのものですね！

気付いた点があればぜひお知らせください！
引き続きよろしくお願いいたします。

### 5/5 — 一条施主の強い味方

*2026-04-25*

CAD図面、電気図面、資金計画書、画像入り仕様書の新旧変更箇所を瞬時に確認することができます。直前に届いた図面を十分チェックできないまま打ち合わせに臨む不安が解消され、サイレントフィリンピン対策にも大活躍しています。一般的な生成AIサービスではアップロードされたファイルがサービス側に流出する危険性があり、個人情報の載っている図面を解析することに抵抗がありましたが、このアプリは個々の携帯アプリ内で解析が完結し流出するリスク不安がないことの安心感も大きいです。
建設後に電気通信簿で売電や蓄電池の活躍を見える化するのが楽しみです。

**Developer response:** レビューありがとうございます！🙏
図面のような個人情報を含むファイルを、端末内だけで処理できる安心感はこのアプリの譲れないポリシーなので、そこを評価していただき本当に嬉しいです！
でんき通信簿も、同じくローカル完結で売電・蓄電池の活躍を可視化します。
引き渡し後もぜひお試しください！

### 5/5 — 一条です

*2026-04-20*

使い方がわからなくなっても設定のチュートリアルから見返すことができるので、思ってたより簡単に使える。図面などの確認が辛かったのでとても助かった。私にとっては神アプリだ。

**Developer response:** レビューありがとうございます！
「神アプリ」と言っていただけて嬉しいです！😊
チュートリアル以外にも、Webマニュアルで
各機能を詳しく解説していますので、よろしければご覧ください。v1.3.0でアプリ内にもマニュアルへのリンクを追加しました。
引き渡し後に使える「でんき通信簿」もそちらで紹介しています！
これからも引き続きよろしくお願いします！

### 5/5 — とても良い

*2026-04-19*

図面が比較できる機能や見積もりを見やすくなる！
図面サイズが違うと比較できないので注意

**Developer response:** レビューありがとうございます！
図面比較や見積りの可視化を活用していただけて嬉しいです😊
確かに、現状はスケールが固定されている前提になってますね。
おそらく、間取りが大きく変わらない限りは、図面サイズはほぼ固定されるので、差分比較が重要になる場面では問題なく使えるかと思います！
ただ、サイズ違いの図面の比較については今後の改善検討ポイントとして検討させていただきます🙏
詳しい使い方はWebマニュアルにもまとめていますので、よろしければご覧ください。

2026/5/7追記
v1.5.0にて、サイズ合わせの機能をリリースしました！スケールが変わった場合でも調整ができるようになってます。（まだ精度に課題があるかもしれません）
マニュアルにも使い方を載せてますので、もしよろしければお試しください！🙇

## Frequently asked questions about Homeowner's Notebook

### What is Ichijo Owner's Notebook?

Ichijo Owner's Notebook is an unofficial app designed to help Ichijo Komuten home owners manage and compare important construction documents like drawings, estimates, and specifications. It allows for detailed tracking of revisions and cost changes.

### How does Ichijo Owner's Notebook handle document comparison?

The app enables pixel-by-pixel comparison of drawing versions, highlighting additions in blue and deletions in red. It also parses estimate PDFs to show cost differences and tracks specification changes.

### Is my data secure with Ichijo Owner's Notebook?

Yes, all your imported drawings, estimates, notes, and other data are processed and stored exclusively on your device. Nothing is sent over the internet, ensuring your information remains private.

### Can Ichijo Owner's Notebook help with solar energy tracking?

Yes, you can import CSV data from i-Sapo to visualize your 'total savings' from solar generation and battery storage. It provides monthly, yearly, and cumulative views of selling income and battery savings.

### Does Ichijo Owner's Notebook have ads?

The provided data does not specify if Ichijo Owner's Notebook contains advertisements. Information collected is limited to what is needed for ad serving and statistical analytics.

### What is the update frequency for Ichijo Owner's Notebook?

The app was last updated on May 28, 2026, with version 1.7.0. This indicates a recent update, and users can expect ongoing maintenance and potential new features.

### What are the requirements for estimate and specification parsing?

For estimate and specification comparison features to work correctly, the documents must be in Japanese format. If Ichijo Komuten changes its document formats, parsing may be affected.

### What is the age rating for Ichijo Owner's Notebook?

Ichijo Owner's Notebook has an age rating of 4+, making it suitable for a wide range of users. The app is available on devices compatible with this rating.

## Version history (last 5 releases)

### 1.16.0 — 2026-10-19

Improved alignment and difference view in Drawing check, with faster difference calculation.

Align position
- "Snap to fit" now searches a wider area, so drawings that are far off are easier to align.
- The first time you open Align position for a page, it snaps once automatically. It also snaps automatically after you change the size in Align size.
- Lines on both drawings are now gray, so lines only on the old (red) or only on the new (blue) stand out.

Difference view
- The new Standard view fades tiny shifts in lines that come from how drawings are made, so real changes are easier to spot. Standard is now the default, including for pages you viewed before.
- Clean hides those shifts. To see every difference as before, choose Strict.
- If you chose Slight or another previous view for a page, it stays as it was.

Misalignment banner
- If the old and new drawings look misaligned, a banner appears. You can fix the position, size, or pages to compare from Adjust. Close it to stop showing it on that page.

### 1.15.1 — 2026-10-17

Class (Electricity Report): You can now resubmit months you've already submitted with your current numbers.
After correcting a rate plan or other settings, use "Resubmit with current numbers" in Submission settings.

### 1.15.0 — 2026-10-09

Electricity Report and Maintenance updates

- Class: see where your monthly generation, bill and more rank among homes that submitted. Compare by insulation zone or selling rate, per tsubo or kW, by month, year or all-time best. You choose whether to submit.
- Maintenance widget: tasks due now and soon, and supplies running low, on your home screen. Tablets too.
- Low stock on the dashboard now counts supplies.
- Zero-purchase days no longer count tiny purchases of 0.01 kWh or less per hour.
- The app is now named Homeowner's Notebook (features and data are unchanged).

### 1.14.0 — 2026-09-27

- Drawing check now has "Other": compare two versions of documents such as lighting specs and color renderings.

- From November 1, the free version asks you to swap out an older drawing number when you save a new one (no swap is needed while you have fewer than 3). Premium stays unlimited. Until October 31, imports stay unlimited. Your saved drawing numbers and data stay, and you won't need to reduce them.

- Other bug fixes and improvements.

### 1.13.0 — 2026-09-21

Comments on drawings, and Meeting material.

- Drawing check draws in a new way: comments on the PDF now appear, and iPhone and Android give the same result.
- Show or hide comments in Drawing check and in the drawing view, from the button at the top right. A comparison keeps your choice.
- Meeting material: a drawing you wrote on in a meeting can be kept alongside the drawing with the same number.
- Notices: news about updates appears on a card on Home, and stays in Settings.

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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 2026-10-25.*