Comparison

Monolithos Core vs Duoflow

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

Head to head
About

Monolithos Core

This app acts as a personal agent OS, connecting your knowledge, writing, and AI tasks in a local-first workspace. It helps you organize information, generate content, and manage projects with a focus on user control and data ownership.

Highlights
  • Local-first workspace
  • Organize notes into knowledge
  • AI-powered task execution
  • On-device transcription and insights
  • Markdown editing and file organization
  • Convert documents to audio podcasts
  • Create presentations from Markdown
Features
Read full description

YOUR PERSONAL AGENT STARTS WITH MEMORY. Monolithos connects your knowledge, writing and AI work in one local-first workspace. We are building a Personal Agent OS that remembers your context, helps move work forward and keeps you in control. Your memory is the foundation. What you do with it is the point. Bring your own Markdown vault. Turn notes into knowledge, meetings into next steps, and ideas into finished work. Your files remain yours to inspect, edit and take with you. MEMORY THAT BELONGS TO YOU - Two layers: Crystals organize what you know; a personal memory layer captures your preferences, judgment and patterns. - The Mirror: inspect how AI understands you, trace traits to their sources, and adjust or remove them. - Night Watch: discover connections and proposed memories from your work. You decide what to accept. - Recall: find relevant knowledge through keyword, graph and semantic retrieval, with sources you can inspect. - Private Domain: choose folders to exclude from cloud AI context while keeping them available for your own local work. FROM IDEAS TO ACTION - Flow: run multi-step AI tasks for research, writing and finished work. Steps that require your judgment pause for approval. - Black Hole: collect material through capture tools and the iPhone share sheet, then bring it into your workspace. - Minutes: record and transcribe on-device, separate speakers after recording, review insights and save Markdown meeting archives. Turn follow-up items into AI tasks. - Synapse: use AI actions on selected text, with access to multiple model families through one interface. - Deep Research: investigate a question across multiple steps and bring the findings into a structured report. CREATE, NOT JUST CHAT - Codex: write and edit Markdown, organize files and work directly with your own material. - Prism: a four-agent presentation workflow with 126 layouts and 14 themes. Turn Markdown into decks you can refine and present. - Audio Brief: turn documents into podcast-style audio in four formats across 12 languages. - Projects: keep related material and AI work within a defined scope. LOCAL-FIRST, WITH CLEAR BOUNDARIES Your vault is stored on your device as Markdown and YAML, without a proprietary file format. It is Obsidian-compatible, supports multiple vaults, and can sync between Apple devices through iCloud. Local-first does not mean every AI operation is offline. Cloud AI processes the context needed for the tasks you request. Private Domain content is excluded from cloud AI context. Minutes audio stays on your device. Live insights send transcript text to cloud AI; turning insights off stops further live analysis. Generating a summary sends the full transcript for cloud processing. Search your files with fast, Rust-native full-text search, including Chinese, Japanese and Korean. Use the interface in English, Simplified Chinese, Traditional Chinese, Japanese or Korean. BUILT AROUND YOUR WORK For researchers, writers, founders and anyone building knowledge over time. Keep your materials, develop your thinking and put AI to work without giving up ownership of what you create. Your memory. Your decisions. Your agent. Local file management, search and Markdown editing do not require an AI subscription. AI features require a subscription. Plans and pricing are available in Settings. Terms of Use (EULA): https://monolithos.ai/terms.html Privacy Policy: https://monolithos.ai/privacy.html

About

Duoflow

Record notes, to-dos, and diaries through a chat interface. Customize chat bubbles for visual organization and easily manage different content types. Syncs seamlessly across Apple devices via iCloud.

Highlights
  • Chat-based recording
  • Customizable chat bubbles
  • Multiple message types (text, image, video, audio, location)
  • Multiple conversation groups
  • iCloud synchronization
  • Cross-device continuity
Features
Read full description

Duoflow 是一款用聊天对话记录的轻量工具。 你可以用来做待办、随手记、日记......你只需要像聊天一样记录就可以了。 可以为每个对话组自定义两侧气泡的含义、颜色、图标和文字样式,让视觉本身成为分类标记。无论是待办清单、购物决策、旅行愿望、习惯打卡、灵感收集,还是任何需要快速整理的小事,都可以用一个对话组轻松承载。 【主要功能】 - 多个对话组:为不同的内容记录在不同的对话本 - 自定义聊天气泡:气泡可以独立设置样式,视觉更清晰 - 多种消息类型:文字、图片、Live Photo、视频、录音、位置 - 滑动切换:滑动气泡分边,记录其实可以很简单 【iCloud 同步】 - 通过你自己的 iCloud 私有数据库同步,不经过任何第三方服务器 - iPhone、iPad、Mac 同账号无缝接续 【隐私与数据】 - 所有数据保存在你的设备和 iCloud中 【Duoflow Pro 会员特权】 订阅服务:月度会员、年度会员、终身会员 会员特权: - 无限制对话组 - 解锁全部气泡主题 - 发送地点消息 - 更多精彩功能持续更新 订阅说明: - 订阅周期:1个月(月度会员);12个月(年度会员) - 付款:用户确认购买并付款后计入App Store账户 - 取消续订:如需取消续订,请在当前订阅周期到期前24小时以前,在App Store订阅管理中关闭自动续订功能 - 续订:App Store账户会在到期前24小时内扣款,扣款成功后订阅周期顺延 --- 隐私政策:https://duoflow.rktech.top/privacy/ 服务协议:https://duoflow.rktech.top/legal/ 欢迎反馈你的任何建议和需求

Screenshots

Monolithos Core4 screens
Duoflow4 screens

Verdict

The call

The clearest difference is rating: Duoflow at 5.0 against Monolithos Core's 1.0. Duoflow also leads on update cadence (every 3 days vs every 5 weeks). Monolithos Core's advantage is iOS requirement (17.0 vs 26.0). On price, ratings volume, ads and in-app purchases 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. Monolithos Core sells 8 in-app purchases, starting at $39.99 per month and Duoflow sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Duoflow holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Monolithos Core ships an update every 5 weeks, Duoflow every 3 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 7 level
Monolithos Core versus Duoflow: the parameters behind the verdict, then further details
ParameterMonolithos CoreDuoflow
PriceFreeFree
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size185 MB84 MB
Age rating17+4+
DeveloperMonolithos,LLCTianjin Ruikai Technology Co., Ltd

Customer experience

Monolithos Core

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Duoflow

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

Monolithos Core

Subscriptions4
  • THE CORE — Monthly7 Days trial$39.991 Month
  • THE MAX — Monthly7 Days trial$89.991 Month
  • THE CORE — Annual$349.001 Year
Show 1 more
  • THE MAX — Annual$859.001 Year
One-time4
  • 1,500 Creation Credits$11.99
  • MMC Memory Boost Pack$11.99
  • 3,500 Creation Credits$29.99
Show 1 more
  • 10,000 Creation Credits$79.99
3 purchases

Duoflow

Subscriptions2
  • 连续包月$0.991 Month
  • 年度会员$4.991 Year
One-time1
  • 永久会员$6.99

Questions

Is Monolithos Core free?
Monolithos Core is free to download, with in-app purchases available.
Is Duoflow free?
Duoflow is free to download, with in-app purchases available.
Which has better reviews, Monolithos Core or Duoflow?
Duoflow is rated higher. Monolithos Core averages 1.0 out of 5 from 1 ratings, while Duoflow averages 5.0 from 1 ratings.
Do Monolithos Core or Duoflow have ads?
Neither Monolithos Core nor Duoflow shows ads.
Which is updated more often, Monolithos Core or Duoflow?
Monolithos Core ships an update every 5 weeks, and Duoflow every 3 days. Most recently, Monolithos Core was updated on October 13, 2026 and Duoflow on October 17, 2026.

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