Chouseisan vs IKUSA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chouseisan
This free scheduling app simplifies organizing events for both personal and professional use. Easily create event pages and share URLs to coordinate with guests, making it a top choice for smooth itinerary planning.
- Streamlines event scheduling
- Organizes private and business events
- Easy event page creation
- Shareable event URLs
- Large user base in Japan
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Chouseisan is a free and easy to use scheduling application that streamlines scheduling. By streamlining scheduling, you can organize all kinds of events smoothly. ■ One of the largest scheduling services in Japan This is the official application of Chouseisan, one of the largest scheduling applications in Japan with over 8 million monthly active users. ■ Streamlines scheduling for all types of events The simple user experience makes it easy for anyone to use, and it can be used for a wide range of itinerary coordination from private to business situations. ■ Just share the URL with your guests to schedule an event. You can create an event page easily by simply entering the name of the event and possible dates. In addition, the URL of the event page can be shared with guests via chat, etc., for easy scheduling. ■ Completely free of charge Chouseisan is completely free of charge.
IKUSA
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IKUSAは、政治家・議員・後援会のための名簿管理アプリです。 日々の名簿整理から政治活動、災害時の地域対応までをひとつにまとめます。 【主な機能】 ・重複チェック:似た名簿を検出してまとめられる ・名刺スキャンで名簿登録:名刺を撮るだけで氏名・住所・連絡先を読み取り ・名簿管理:個人/後援会/企業団体、代表名簿・紐づき名簿で世帯や組織を整理 ・地図で訪問・掲示管理:戸建て・集合住宅・ポスター・陳情場所を航空写真の地図に記録。選挙区設定やポスター掲示の進捗も管理 ・災害対応の緊急事態モード:気象庁の防災気象情報や、国土地理院等の公的データを活用し、指定緊急避難場所を地図上で確認。 地域の避難所・現場情報をすばやく把握 ・領収書スキャン:紙に貼った領収書を撮ると自動で1枚ずつに分け、政務活動費の費目ごとに一覧化(国会議員用・地方議員用) ・エクセル/CSV取込・出力:既存名簿の取り込み、項目を選んでCSV書き出し ・宛名印刷:宛名ラベル・封筒を印刷。敬称(様・先生・御中 など)を相手ごとに選択 ・着信時に名前表示:名簿の電話番号を端末の着信識別に登録 【プライバシー】 データは利用者の端末内、およびご自身のiCloud(private database)に保存され、 開発者のサーバーへ自動送信しません。広告配信・トラッキングは行いません。 【プレミアム(月額¥2,980・自動更新)】 ご加入で名簿登録が無制限になり、すべての機能を制限なくご利用いただけます。 ・支払いはApple IDに請求されます。 ・期間終了の24時間前までに解約しない限り自動更新されます。解約はApp Storeのアカウント設定から行えます。 ・利用規約/プライバシーポリシーはアプリ内およびプライバシーポリシーページに記載しています。 ――――――――― ご利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ プライバシーポリシー: https://ikusa-app-2026.web.app/privacy-policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Chouseisan at none against IKUSA's 1. Chouseisan also leads on iOS requirement (15.6 vs 17.0). IKUSA's advantage is ads (none vs shown) and update cadence (every 2 days vs fortnightly). On price and device support 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. IKUSA sells 1 in-app purchase, starting at $19.99 per month. Chouseisan asks for nothing beyond the download.
Chouseisan ships an update fortnightly, IKUSA every 2 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Chouseisan | IKUSA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (43 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 43 — better | — |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 97 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Mixtend Inc. | NORIAKI ASO |
In-app purchases
Chouseisan
No in-app purchases
IKUSA
- プレミアム$19.991 Month








