Comparison

Marklens vs Musing Notes

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

Head to head
About

Marklens

This app is a fast, native Markdown viewer for macOS, iPadOS, and iPhone. It renders .md files instantly with beautiful typography, themes, syntax highlighting, and diagrams. Designed for reading, it offers a private and friction-free experience.

Highlights
  • Instant Markdown rendering
  • Syntax highlighting for 30+ languages
  • Mermaid diagram support
  • GitHub-Flavored Markdown
  • Light and dark themes
  • Export to PDF
  • Quick Look preview on macOS
Features
Read full description

Marklens is a fast, native Markdown viewer for macOS, iPadOS, and iPhone. Open any .md file with a click and see it rendered immediately — beautiful typography, light and dark themes, syntax-highlighted code, and Mermaid diagrams. No editor, no library, no friction. HIGHLIGHTS • Instant render — every .md opens in a clean, focused window • 30+ language syntax highlighting via highlight.js, bundled offline • Mermaid 11 diagrams — flowcharts, sequence, state, xy-charts and more • GitHub-Flavored Markdown — tables, task lists, footnotes, strikethrough • Light and dark theme matching the system appearance • Quick Look on macOS — press Space on any .md in Finder for a rendered preview • Export to PDF on every platform • Pinch-to-zoom on iPadOS and iPhone, ⌘+ / ⌘− / ⌘0 on macOS • Open files via drag-and-drop, the Share Sheet, or the Files app MADE FOR READING Marklens doesn't try to be a notes app or a knowledge base. It opens a file, renders it perfectly, and gets out of the way. If you write Markdown in another tool — VS Code, Obsidian, GitHub, your favorite text editor — Marklens is the viewer you reach for to look at the result. PRIVATE BY DESIGN Marklens collects nothing. No analytics, no telemetry, no crash reports, no network requests. Every rendering asset — Mermaid, highlight.js, fonts — ships inside the app. Read the full privacy policy at https://donald-jackson.github.io/marklens/privacy/ OPEN SOURCE Marklens is MIT-licensed and developed in the open. Source, issues, and contribution guide live at https://github.com/donald-jackson/marklens.

About

Musing Notes

Capture and find notes using natural language search, voice input, and image recognition. This app organizes your thoughts without traditional folders or tags, making it ideal for creative individuals on the go.

Highlights
  • Natural language search
  • Voice to text transcription
  • Image recognition for notes
  • Contextual note capture (location, time)
  • Web search integration
  • Distraction-free interface
Features
Read full description

Some ideas arrive half-formed — at a café in the rain, on a walk, the moment before sleep. Musing is built to catch them, and to give them back to you exactly when you need them. You don't file. You don't sort. You don't tag. You just write — or speak — and move on. Later, you find any note the way you'd ask a friend: "What was that wine I liked?" "The café idea when it was raining." FREE · PRIVATE · ON YOUR DEVICE Musing is free — no ads, no account, no subscription, no credits. Capture, context, photos, and text search work on every supported device. Ask answers and semantic recall use Apple Intelligence on devices that support it — otherwise search stays useful without them. No server ever reads a note by default, nothing trains a model, and notes sync only through your own private iCloud — across iPhone, Apple Watch, and Mac. SEARCH BY THE MOMENT Every note quietly keeps its moment — neighborhood, weather, time of day, the kind of place. So you can ask by it: "coffee shop notes," "rainy day ideas," "notes from Traverse City," "late night notes" — or combined, "receipts from Oak Park last month." Instant, even offline. JUST ASK Search isn't a keyword box. Type what you're looking for in plain language and Musing surfaces the notes that match — even when you don't remember the exact words. Questions get answers grounded in your own notes, citing the notes they came from. CATCH IT HOWEVER IT ARRIVES Type a quick thought. On iPhone, speak a voice note — transcribed on-device; on Mac, dictate straight into the composer. Attach a photo and Musing reads what's there on your device — a receipt gets its total, a grocery list becomes a checklist. Check in to save a place. On iPhone: Home Screen widget, Siri, Shortcuts, Apple Watch, and the share sheet. On Mac: a menu-bar capture that never needs the main window, plus a Reading Room for asking and browsing. YOUR PLACES A quiet map of everywhere you've paused — most-visited spots and neighborhoods, on iPhone and in a dedicated Places window on Mac. WHEN YOU RETURN Walk back into a café you've written in and that note can meet you on Home — a quiet lock-screen banner too, if you ask. A year on, an echo: Time Recall brings the note back with the weather and the street still on it. Place Recall and Time Recall (Echoes) stay off until you turn them on. Hospitals, clinics, and places of worship stay unnamed, and never trigger. FIVE ROOMS TO WRITE IN Choose how Musing feels. Foolscap, Inkwell, Verdant, Dusk, or Harbor. Light and dark work in every theme. BRING YOUR OWN AI SERVICE Optional Pro Mode lets you paste your own OpenAI or Anthropic API key so Ask and web lookup can use GPT or Claude. You choose the provider, use your own account, and keep usage and costs under your control. Off by default — not a paid upgrade inside Musing. Capture, search, and tags stay on this device. Nothing trains a model. PRIVATE BY DESIGN Sensitive places — clinics, hospitals, places of worship — are never named. Every context signal has an off switch. NO FOLDERS. NO FEED. NO BUSYWORK. Capture a half-formed idea. Find it later. Free. Private. Yours.

Screenshots

Marklens3 screens
Musing Notes4 screens

Verdict

The call

Marklens and Musing Notes both sit at 5.0 stars, but that hides the real split: 100% of Musing Notes's written reviews are positive against 0% of Marklens's. Musing Notes also leads on update cadence (every 3 days vs monthly) and ratings volume (7 vs 2). Marklens's advantage is in-app purchases (none vs 2) and iOS requirement (18.0 vs 26.0). On price, rating, 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. Musing Notes sells 2 in-app purchases, starting at $2.99 per month. Marklens asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Marklens against 4.9 for Musing Notes. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews are what separate them: 0% of Marklens's written reviews are positive against 100% of Musing Notes's.

UpkeepUpdate frequency

Marklens ships an update monthly, Musing Notes every 3 days. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

Scorecard6 real differences · 4 level
Marklens versus Musing Notes: the parameters behind the verdict, then further details
ParameterMarklensMusing Notes
PriceFreeFree
Rating5.0 (2 ratings) — better4.9 (7 ratings)
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings27 — better
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, Mac, Apple Watch
Requires iOS18.0 — better26.0
Further details — not scored
Size4 MB10 MB
Age rating4+4+
DeveloperDonald JacksonRIPUL JAIN

Customer experience

Marklens

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Musing Notes

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Marklens

No in-app purchases

2 purchases

Musing Notes

Subscriptions2
  • Musing Plus$2.991 Month
  • Musing Pro$9.991 Month

Questions

Is Marklens free?
Marklens is free to download, with no in-app purchases.
Is Musing Notes free?
Musing Notes is free to download, with in-app purchases available.
Which has better reviews, Marklens or Musing Notes?
Marklens is rated higher. Marklens averages 5.0 out of 5 from 2 ratings, while Musing Notes averages 4.9 from 7 ratings.
Do Marklens or Musing Notes have ads?
Neither Marklens nor Musing Notes shows ads.
Which is updated more often, Marklens or Musing Notes?
Marklens ships an update monthly, and Musing Notes every 3 days. Most recently, Marklens was updated on September 19, 2026 and Musing Notes on September 13, 2026.

Other comparisons