Comparison

RGB_Light vs 23Brain

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

Head to head
About

RGB_Light

Features
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影の色をデザインする新しいコンセプトの照明、RGB_Light。 3灯の光を加法混色することで、白い光の中に彩る影をつくり出します。 ​ RGB_LightとアプリをBluetooth接続することで、光と影の色をコントロールすることが可能に。 プリセットモードを選択して手軽に影の色を変更したり、お気に入りのモードを作成することも。 ウォームホワイトに切り替えて普通照明として使用することもできます。 本体固有のパスワードを使用して10m範囲にある複数のライトを同時に管理することや、個別管理が可能。 また、色相回転モードにより、影の色が次第に変化していく「RGB_Light」だけの特別な演出効果も搭載。 アナログな光の原理は、エモーショナルな空間を演出します。 店舗やご家庭・イベントスペース・学校・スタジオなど様々なシーンで特別な体験を。

About

23Brain

Read full description

Your second and third brain for smarter learning 23Brain helps you collect, summarize, and retain knowledge from everything you read, watch, or listen to — powered by AI. Build a personal learning system that grows with you. How it works • Summarize any content automatically Save links, videos, or PDFs — 23Brain generates concise, AI-powered summaries. • Learn on the go Listen to audio summaries anywhere and make use of your time more efficiently. • Organize with collaborative collections Group related topics, share insights, or explore curated watchlists. • Retain knowledge with AI-generated quizzes Reinforce what you’ve learned through personalized quizzes that adapt to your interests. • Chat with your second brain Ask questions, connect ideas, and reflect on what you’ve learned through intelligent conversations. • Track your progress Stay motivated with streaks, insights, and detailed learning statistics. Why 23Brain Unlike traditional note-taking tools, 23Brain helps you remember more and understand faster — not just store information. It’s your personal AI companion for continuous learning and long-term growth. Key features • AI summaries for articles, videos, and podcasts • Audio playback for summaries • Personalized quizzes and progress insights • Collaborative collections and watchlists • Multi-language support for 12 languages including English, German, and Hindi • Light and Dark Mode Start building your second brain today. Turn what you learn into knowledge that lasts.

Screenshots

RGB_Light4 screens
23Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: RGB_Light at none against 23Brain's 4. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 23Brain sells 4 in-app purchases, starting at $12.99 per month. RGB_Light asks for nothing beyond the download.

UpkeepUpdate frequency

RGB_Light ships an update every 10 days, 23Brain every 8 days. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 5 level
RGB_Light versus 23Brain: the parameters behind the verdict, then further details
ParameterRGB_Light23Brain
PriceFreeFree
Update frequencyEvery 10 daysEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.4 — better13.0
Further details — not scored
Size36 MB76 MB
Age rating4+4+
DeveloperShiftall Inc.Felix Seip

In-app purchases

None

RGB_Light

No in-app purchases

4 purchases

23Brain

Subscriptions4
  • Pro (Monthly)3 Days trial$12.991 Month
  • Ultra (Monthly)3 Days trial$24.991 Month
  • Pro (Yearly)3 Days trial$99.991 Year
Show 1 more
  • Ultra (Yearly)3 Days trial$249.991 Year

Questions

Is RGB_Light free?
RGB_Light is free to download, with no in-app purchases.
Is 23Brain free?
23Brain is free to download, with in-app purchases available.
Do RGB_Light or 23Brain have ads?
Neither RGB_Light nor 23Brain shows ads.
Which is updated more often, RGB_Light or 23Brain?
RGB_Light ships an update every 10 days, and 23Brain every 8 days. Most recently, RGB_Light was updated on October 6, 2026 and 23Brain on October 9, 2026.

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