Comparison

Lucid vs DeepSync

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

Head to head
About

Lucid

Organize your thoughts with a minimalist, gesture-driven note-taking app. Connect and nest ideas fluidly with block-based editing. Bookmark sections and navigate easily with intuitive gestures.

Highlights
  • Minimalist and intuitive design
  • Fluid, block-based editing
  • Gesture-driven navigation
  • Bookmark any section
  • Spacebar caret navigation
Features
Read full description

■ Beautifully minimal Intuitive & clean design that keeps you in the flow. A note-taking app that gets out of your way. ■ Connect ideas Organize thoughts as they form. Freely move and nest ideas with fluid, block-based editing. ■ Gesture driven • Swipe right to focus on any subsection • Swipe left to collapse a section • Navigate through parent blocks by swiping from the edge • Pull down to add a block at the top or tap empty space to add at the bottom ■ Other features • Bookmark any section, not just top-level notes • Easily move the caret between blocks by holding the spacebar (not possible in other outliners) ■ Roadmap Lucid is in early development and many more features are coming soon: • External links • Bidirectional linking • Desktop app & iCloud sync • More themes and customization options For the philosophy and reasoning behind the app, visit https://thelucidnotes.com/

About

DeepSync

This app uses multiple AI models to debate and synthesize answers to your questions, providing a more accurate and reliable response. It offers real-time transparency into the AI's thought process and applies advanced text intelligence for optimized output.

Highlights
  • Multi-agent AI synthesis
  • Fact-checking by consensus
  • Real-time agent panel
  • Advanced text intelligence
  • Chat history and sessions
Features
Read full description

▶ Multi-Agent AI Assistant - DeepSync doesn't just ask one AI. It asks five simultaneously. Llama 3.1, Llama 3.3, Qwen, and GPT debate your question in parallel then Llama 4 steps in as the final arbitrator, synthesizing the single most accurate answer. ▶ Key Features 【 Multi-Agent Synthesis 】 - Your question is sent to 4 leading AI models at once. - Each model generates an independent answer. - Llama 4 then arbitrates — cross-checking, fact-verifying, and delivering one refined, reliable response. 【 Fact-Checking by Consensus 】 - 4 AIs cross-validate every response in real time. - Conflicting answers are flagged and resolved by Llama 4 automatically. - The result: fewer hallucinations, more truth. 【 Real-Time Agent Panel 】 - Watch all AIs think simultaneously with live status updates. - Full transparency into how your answer was built. 【 Advanced Text Intelligence 】 - Beyond standard LLM chatbots, DeepSync applies specialized machine learning text models on top of every response. - These models analyze tone and completeness — refining the final answer to a higher standard. - The result is not just an AI answer. It's a quality-optimized, human-readable response. 【 Chat History & Sessions 】 - Organize conversations into separate sessions. - Instantly switch between topics without losing context. ▶ Connect With Us - Instagram (KR) : https://www.instagram.com/corp.exciting/reels/ - Instagram (US) : https://www.instagram.com/corp.exciting2/reels/ - TikTok (KR) : https://www.tiktok.com/@corpexciting - TikTok (US) : https://www.tiktok.com/@corp.exciting2 - YouTube (KR) : https://www.youtube.com/@corp.exciting - YouTube (US) : https://www.youtube.com/@excitingcorp - X : https://x.com/corp_exciting - Telegram : https://t.me/notice_exciting ▶ FAQ 【 Is my data safe? 】 - Absolutely. We never store your conversations. Your privacy is our priority. 【 Why 5 AIs instead of one? 】 - One AI can be wrong. Four AIs debating and Llama 4 arbitrating dramatically reduces errors and bias, giving you the most accurate answer possible. 【 Which AI models are used? 】 - Llama 3.1, Llama 3.3, Qwen 32B, and GPT as debaters — with Llama 4 Scout as the final arbitrator. The best open and closed models available today. 【 Need Help? 】 - For support, inquiries, or feedback: corp.exciting@gmail.com

Screenshots

Lucid4 screens
DeepSync4 screens

Verdict

The call

The clearest difference is review sentiment: Lucid at 100% against DeepSync's 0%. Lucid also leads on rating (5.0 vs 1.0) and ads (none vs shown). DeepSync's advantage is iOS requirement (15.0 vs 17.6). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Lucid holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 100% of Lucid's written reviews are positive against 0% of DeepSync's.

UpkeepUpdate frequency

Lucid ships an update every 2 weeks, DeepSync every 5 months. The most recent releases landed on August 29, 2026 and September 11, 2026 respectively.

Scorecard7 real differences · 3 level
Lucid versus DeepSync: the parameters behind the verdict, then further details
ParameterLucidDeepSync
PriceFreeFree
Rating5.0 (4 ratings) — better1.0 (1 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings4 — better1
Update frequencyEvery 2 weeks — betterEvery 5 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size5 MB37 MB
Age rating4+17+
Developerillia chabanHOYONG NA

Customer experience

Lucid

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DeepSync

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Lucid

No in-app purchases

None

DeepSync

No in-app purchases

Questions

Is Lucid free?
Lucid is free to download, with no in-app purchases.
Is DeepSync free?
DeepSync is free to download, with no in-app purchases.
Which has better reviews, Lucid or DeepSync?
Lucid is rated higher. Lucid averages 5.0 out of 5 from 4 ratings, while DeepSync averages 1.0 from 1 ratings.
Do Lucid or DeepSync have ads?
DeepSync shows ads; Lucid does not.
Which is updated more often, Lucid or DeepSync?
Lucid ships an update every 2 weeks, and DeepSync every 5 months. Most recently, Lucid was updated on August 29, 2026 and DeepSync on September 11, 2026.

Other comparisons