Comparison

Radar Chart Note vs Rarder Chart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Radar Chart Note

Easily create and save radar, spider, or web charts to visualize data across multiple variables. This utility app allows you to plot one or more series of values for comprehensive data representation.

Highlights
  • Create radar charts
  • Plot multiple data series
  • Visualize over multiple variables
  • Save charts to photo library
Features
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Create radar charts to record, visualize, and compare ratings and other data. In addition to numerical ratings, you can keep notes and photos together in one place. Use the app for study results, reading logs, product reviews, café visits, investments, character profiles, and much more. ■Great for: • Reviewing test results and study progress • Keeping track of books and personal ratings • Creating character ability charts • Comparing products, services, or competitors • Recording cafés and restaurants you visit • Comparing stocks • Evaluating potential investments across multiple criteria ■Main features: • Create radar charts • Compare multiple charts • Add notes • Attach multiple photos • Save chart images to your photo library • Organize data into groups • Customize chart colors Use Graph Memo to organize what matters to you and compare it using your own criteria.

About

Rarder Chart

Features
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主な機能 【レーダーチャート作成】 ・項目名と値を入力するだけで、美しいレーダーチャートを自動生成 ・最大15項目まで追加可能 ・6種類のスコア単位に対応 ・値は内部で0.0〜1.0に正規化し、単位ごとに適切な表示値に自動変換 ・メモを添えてチャートの補足情報も記録可能 【フォルダ管理】 ・フォルダ単位でチャートを整理 ・12種類のアイコンからフォルダの見た目をカスタマイズ ・ドラッグ&ドロップでフォルダ・チャートの並び順を変更 ・テンプレート機能で、新規チャート作成時に固定項目とデフォルト単位を自動セット 【チャート比較】 ・同じフォルダ内のチャートを重ねて比較表示 ・最大6つのチャートを色分けして同時表示 【共有・コラボレーション】 ・招待コードでフォルダを他ユーザーと共有 ・参加リクエスト → オーナー承認のセキュアなフロー ・メンバー管理(追加・削除)、共有フォルダからの退出 【画像エクスポート】 ・レーダーチャートを高解像度画像(3x)として書き出し ・iOS共有シートから直接SNS・メッセージアプリに送信

Screenshots

Radar Chart Note4 screens
Rarder Chart4 screens

Verdict

The call

The clearest difference is in-app purchases: Rarder Chart at none against Radar Chart Note's 1. Rarder Chart also leads on ads (none vs shown). Radar Chart Note's advantage is update cadence (every 3 weeks vs every 6 months). On price, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Radar Chart Note sells 1 one-off in-app purchase. Rarder Chart asks for nothing beyond the download.

UpkeepUpdate frequency

Radar Chart Note ships an update every 3 weeks, Rarder Chart every 6 months. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
Radar Chart Note versus Rarder Chart: the parameters behind the verdict, then further details
ParameterRadar Chart NoteRarder Chart
PriceFreeFree
Rating3.5 (4 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.0 — better26.2
Further details — not scored
Size5 MB14 MB
Age rating4+4+
Developerkohei yamaneYuta Hoshino

In-app purchases

1 purchases

Radar Chart Note

One-time1
  • Remove Ads$2.99
None

Rarder Chart

No in-app purchases

Questions

Is Radar Chart Note free?
Radar Chart Note is free to download, with in-app purchases available.
Is Rarder Chart free?
Rarder Chart is free to download, with no in-app purchases.
Do Radar Chart Note or Rarder Chart have ads?
Radar Chart Note shows ads; Rarder Chart does not.
Which is updated more often, Radar Chart Note or Rarder Chart?
Radar Chart Note ships an update every 3 weeks, and Rarder Chart every 6 months. Most recently, Radar Chart Note was updated on October 4, 2026 and Rarder Chart on October 10, 2026.

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