Comparison

NewsNinja vs 論文ニュース

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

Head to head
About

NewsNinja

Consolidate your favorite RSS feeds, YouTube channels, and Reddit subreddits into a single, personalized news stream. Enjoy AI-powered summaries, distraction-free reading, and intelligent grouping of articles to save time and stay informed.

Highlights
  • Unified RSS, Reddit, and YouTube feeds
  • AI-powered summaries and translations
  • Distraction-free reader mode
  • Intelligent article grouping
  • Fact-checking capabilities
  • Mute unwanted topics
  • Organize feeds by categories
Features
Read full description

Your news, podcasts, videos, and social feeds. One app, your way. NewsNinja brings RSS feeds, YouTube channels, Reddit, podcasts, X (Twitter), Mastodon, Bluesky, Substack, Medium, and Hacker News together in a personalized news reader. Catch up on the stories you care about, listen to your favorite shows, and save time with AI summaries. No ads. No account required. Just the sources you choose, with the freedom to make your feed your own. YOUR DAY AT A GLANCE Make Today your personal dashboard, with the latest news, videos, podcasts, and social posts alongside your calendar events, due and overdue reminders, weather forecasts, and crypto prices. Track your favorite coins with two years of price history. Choose your sections, change their order, and pick the layouts that work for you. ALL YOUR SOURCES, TOGETHER Follow websites and blogs through RSS, watch YouTube channels, browse subreddits, and keep up with Hacker News. Follow accounts on X, Mastodon, and Bluesky without signing in to those networks. Read their posts alongside your other feeds, without needing to post or participate. PODCASTS, WITH MORE WAYS TO CATCH UP Listen to episodes with a built-in player that stays within reach as you browse. Download podcasts for offline listening, generate transcripts, search within an episode, or read along without audio. Get the main points with AI summaries. LESS TIME CATCHING UP Summarize articles, YouTube videos, podcasts, and Reddit discussions with AI. Choose from three summary styles to suit how much detail you want. Translate articles and news into your preferred language. FACT CHECKING & LEARN MORE Explore the claims behind a headline with AI-assisted fact checking for articles, YouTube videos, and Reddit threads. Use Learn More to explore a topic further and add context to what you're reading. READ WITHOUT THE CLUTTER Reader Mode removes distracting page elements for a clean reading experience. Adjust fonts, text size, reader styles, and themes to make long articles comfortable to read. ONE STORY, FEWER REPEATS Intelligent grouping brings articles about the same story together, helping you spot overlapping coverage and avoid reading the same news repeatedly. Choose between grouping algorithms to suit your feeds. FOLLOW THE CONVERSATION Browse Reddit links, images, and videos, read full comment threads, and catch up on Hacker News discussions. Summarize lengthy Reddit conversations to get the key points faster. A FEED THAT FEELS LIKE YOURS Organize sources into categories, customize your sidebar, and choose from card and list layouts. Mute unwanted topics with keyword filters and star articles to read later. DAILY BRIEFING & NEWS OVERVIEW Get a personalized daily briefing that brings together your calendar events, weather, financial updates, reminders, and news in one concise summary. Catch up on the stories across your feeds with News Overview, so you can see the bigger picture without opening every article. DISCOVER SOMETHING WORTH FOLLOWING Search for RSS feeds, subreddits, podcasts, YouTube channels, and Substack publications in one place. Explore curated feeds by topic and country, or import your existing subscriptions with OPML. Guided setup helps you get started with your feeds and integrations. STAY IN THE LOOP Get notifications about noteworthy stories, so you can catch up even when you're away from your feed. AT HOME ON YOUR APPLE DEVICES Read on iPhone, iPad, and Mac, with iCloud sync to keep your experience connected across devices. Privacy policy: https://ainews.ninja/privacypolicy Terms and conditions: https://ainews.ninja/terms

About

論文ニュース

Features
Read full description

いまこの瞬間も、世界のどこかで新しい発見が生まれています。 論文ニュースは、公開されたばかりの研究論文をAIが日本語で要約し、1本30秒の記事として毎日更新するアプリです。予備知識はいりません。 ■ 世界中の「新しい発見」が日本語で読めます 扱うのは、世界中の研究機関が公開している本物の研究論文です。分野は医学・生物学から物理学・情報科学・社会科学まで幅広く、そのほとんどは英語で発表されたもの。でも、読むのはぜんぶ日本語です。 専門家どうしのチェック(査読)を受ける前の論文も扱うため、その場合は記事に「査読前」の印を付けています。 ■ 1本30秒で「わかる」つくり 記事は、次の順で読めるように作っています。 ・見出し ・30秒で読める要約 ・何が分かったか ・なぜ重要か ・どんな研究か ・研究の限界 むずかしい言葉はその場で説明するので、予備知識がなくても読み進められます。すべての記事に元の論文へのリンクが付いているので、「本当に?」と思ったら原文をそのまま確かめられます。 ■ 好きなテーマだけを選べます 10ジャンルと、12グループ・200以上の興味テーマから選べます。 【10ジャンル】 健康・医療/社会・経済/工学・ものづくり/生物・自然/環境・地球/AI・IT/物質・材料/心理・脳/宇宙・物理/その他 【テーマの例】 睡眠、ダイエット、筋トレ、コーヒー、がん、免疫、腸内細菌、記憶力、ストレス、恋愛・人間関係、動物、昆虫、植物、気候変動、防災・地震、ブラックホール・重力波、宇宙開発、生成AI、ロボット、自動運転、半導体、お金・投資、働き方、音楽、映画、ゲーム、スポーツ、旅行、数学、教育、哲学 など 選んだジャンルとテーマはホーム上部のタブとして並び、並び順も変えられます。あなたのホームが、あなた専用の科学ニュースになります。 ■ 読むための機能 ・日本語で全文検索 ・一度開いた記事には既読の印が付く ・お気に入りに保存 ■ ログインは任意です ログインしなくても、記事の閲覧・検索・お気に入りを含むすべての機能をお使いいただけます。Apple または Google のアカウントでログインすると、お気に入り・選んだテーマ・既読の記録を別の端末に引き継げます。 ■ 無料とProプランの違い 無料:すべての記事を読めます。広告が表示されます。興味テーマは2件まで登録できます。 Proプラン:広告が表示されません。興味テーマを無制限に登録できます。 読める記事は、どちらのプランでも同じです。 ■ Proプラン(自動更新サブスクリプション) ・期間と価格:1か月 400円/1年 3,800円 ・1年プランは月あたり317円。月額のまま1年使うより1,000円お得です ・料金は Apple ID に請求され、期間終了の24時間前までに解約しない限り、同じ期間・同じ価格で自動更新されます ・解約はいつでも可能です。iPhoneの「設定」>ご自身の名前>「サブスクリプション」から行えます 利用規約:https://ronbun-api-255537769300.asia-northeast1.run.app/terms プライバシーポリシー:https://ronbun-api-255537769300.asia-northeast1.run.app/privacy ■ ご注意 ・記事は研究論文をもとにAIが作成した要約です。原著と異なる場合があります ・医療・健康に関する内容は、診断や治療の助言ではありません。健康に関する判断は、必ず医師などの専門家にご相談ください

Screenshots

NewsNinja4 screens
論文ニュース4 screens

Verdict

The call

The clearest difference is in-app purchases: 論文ニュース at none against NewsNinja's 4. 論文ニュース also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (16.4 vs 26.0). NewsNinja's advantage is ads (none vs shown) and device support (4 vs 1). On price 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. NewsNinja sells 4 in-app purchases, starting at $0.79 per 7 days. 論文ニュース asks for nothing beyond the download.

UpkeepUpdate frequency

NewsNinja ships an update every 2 weeks, 論文ニュース every 2 days. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
NewsNinja versus 論文ニュース: the parameters behind the verdict, then further details
ParameterNewsNinja論文ニュース
PriceFreeFree
Rating4.7 (44 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings44 — better—
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone
Requires iOS26.016.4 — better
Further details — not scored
Size133 MB57 MB
Age rating4+17+
DeveloperTimelabs LtdSORA YAGISHITA

In-app purchases

4 purchases

NewsNinja

Subscriptions3
  • AI Summary - Weekly$0.797 Days
  • NewsNinja+7 Days trial$0.991 Month
  • NewsNinja+7 Days trial$7.991 Year
One-time1
  • NewsNinja+$24.99
None

論文ニュース

No in-app purchases

Questions

Is NewsNinja free?
NewsNinja is free to download, with in-app purchases available.
Is 論文ニュース free?
論文ニュース is free to download, with no in-app purchases.
Do NewsNinja or 論文ニュース have ads?
論文ニュース shows ads; NewsNinja does not.
Which is updated more often, NewsNinja or 論文ニュース?
NewsNinja ships an update every 2 weeks, and 論文ニュース every 2 days. Most recently, NewsNinja was updated on October 18, 2026 and 論文ニュース on October 11, 2026.

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