Comparison

Blackmount vs Nocturnum

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

Head to head
About

Blackmount

Capture and organize AI conversations, browser sessions, bookmarks, voice notes, and research. Search your saved content or ask AI questions across it, with source citations. Resume your work seamlessly across devices.

Highlights
  • Save and search AI conversations
  • Capture browser tabs and sessions
  • Organize bookmarks and research
  • Record and transcribe voice notes
  • Ask AI questions across saved content
  • Resume work across devices
  • Source citations for AI answers
Features
Read full description

Save your AI chats and research. Search, ask, and resume anywhere. Blackmount helps you capture the work you do across AI conversations, browser sessions, bookmarks, voice notes, and research tabs — then search it or ask AI about it later. Never lose the conversation, source, tab, or note that helped you think through something important. AI CHAT MEMORY - Save and search your AI conversations in one place - Works with supported AI sites such as ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek, and Meta AI - View full conversations with markdown formatting - Find useful prompts, answers, code, drafts, and research later - Captured through the Blackmount browser extension with user consent ASK AI - Ask questions across your captured content - Get answers grounded in your saved notes, sessions, voice recordings, and AI chats - Use source citations to trace where an answer came from - Draft follow-up emails, client updates, summaries, and action plans - Dictate questions with voice-to-text SAVE & RESUME RESEARCH - Save open Safari tabs as a session - Add a quick note about what you were working on - Restore your research later from another device or browser - Keep browser sessions, bookmarks, and notes organized by context - Stop losing research when you switch tasks VOICE NOTES - Record voice notes with live transcription - Use Apple’s on-device speech recognition for local recordings - Generate AI summaries from recordings when AI features are enabled - Search voice notes alongside your other captured work HOW IT WORKS 1. Use the Blackmount browser extension to capture AI chats, tabs, bookmarks, and research sessions 2. Save Safari sessions from your iPhone or iPad 3. Add notes or voice recordings when you want extra context 4. Open Blackmount to search, browse, or ask AI about what you captured 5. Resume your work from phone, tablet, browser, or desktop PERFECT FOR - Researchers managing many tabs, sources, and AI conversations - Consultants using AI tools for client work - Students collecting sources and drafts - Developers saving code explanations, docs, and debugging threads - Product managers tracking market and competitor research - Anyone who uses multiple AI tools and wants to find old conversations later WHY BLACKMOUNT - Search across AI chats, browser sessions, bookmarks, notes, and voice recordings - Ask AI questions across the content you captured - Private by default - AI features require explicit consent before data is shared with AI providers - No ads - No selling your data ALSO INCLUDES - Sync across devices - Safari extension for fast tab saves - Share extension from other apps - Dark mode - iPad-optimized layout Free to use. Pro subscription available for unlimited sync and AI credit. Additional AI credit available as an in-app purchase. Terms of Use: https://app.blackmount.ai/terms Privacy Policy: https://app.blackmount.ai/privacy-policy

About

Nocturnum

Capture ideas quickly and organize them with Markdown formatting. This app provides a focused writing environment that remains fast and efficient as your note collection grows. Easily sort, search, and access your thoughts for seamless productivity.

Highlights
  • Quick idea capture
  • Markdown formatting
  • Workspace and notebook organization
  • Fast search functionality
  • JSON and Markdown export
  • Inbox for temporary notes
Features
Read full description

Nocturnum helps you capture ideas quickly, shape them with Markdown, and keep your notes easy to find. It gives you a calm writing space that stays fast as your library grows. From quick thoughts to deep project docs, everything stays clear and organized. Use Nocturnum as your daily note workspace on iPhone and iPad. You can write, sort, search, and return to the right context without losing momentum. **Capture Without Friction** Create notes from anywhere in the app and start writing immediately. Inbox keeps fast captures safe until you are ready to organize them. **Organize by Context** Group notes into workspaces, notebooks, and sub-notebooks that match how you think. Reorder key lists so active projects stay at the top. **Write Clearly in Markdown** Use headings, lists, checklists, links, and code blocks to keep ideas structured. Rich formatting stays readable while editing and reviewing. **Find What Matters Fast** Search across titles and note content to jump directly to the detail you need. Built-in views like Recent and Favorites help you resume work in seconds. **Keep Ownership of Your Data** Export full JSON backups when you need a complete snapshot of your library. Export markdown files for portable archives and import backups when restoring. Download Nocturnum today and build a notes system you can trust every day.

Screenshots

Blackmount3 screens
Nocturnum4 screens

Verdict

The call

The clearest difference is monetization model: Nocturnum at free against Blackmount's freemium. Blackmount's advantage is iOS requirement (17.0 vs 26.0). On price, rating, ratings volume and update cadence 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. Blackmount sells 2 in-app purchases, starting at $1.99 per month and Nocturnum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Blackmount against 5.0 for Nocturnum. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Blackmount ships an update fortnightly, Nocturnum every 4 weeks. The most recent releases landed on October 1, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 8 level
Blackmount versus Nocturnum: the parameters behind the verdict, then further details
ParameterBlackmountNocturnum
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyFortnightly — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size14 MB9 MB
Age rating4+4+
DeveloperBlackmount.ai IncFishington Studios

Customer experience

Blackmount

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Nocturnum

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Blackmount

Subscriptions1
  • Blackmount Pro$1.991 Month
One-time1
  • AI Credit$0.99
1 purchases

Nocturnum

One-time1
  • Upgrade to Pro$4.99

Questions

Is Blackmount free?
Blackmount is free to download, with in-app purchases available.
Is Nocturnum free?
Nocturnum is free to download, with in-app purchases available.
Which has better reviews, Blackmount or Nocturnum?
Blackmount and Nocturnum are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Blackmount or Nocturnum have ads?
Neither Blackmount nor Nocturnum shows ads.
Which is updated more often, Blackmount or Nocturnum?
Blackmount ships an update fortnightly, and Nocturnum every 4 weeks. Most recently, Blackmount was updated on October 1, 2026 and Nocturnum on October 19, 2026.

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