Comparison

Aino vs Hyday MD

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

Head to head
About

Aino

A fast, focused Markdown workspace for building a personal knowledge system. Connect ideas and turn notes into a structured, evolving network. Ideal for capturing thoughts, organizing knowledge, or building your second brain with a clean and powerful interface.

Highlights
  • Markdown-first editing
  • Connected notes
  • Structured thinking
  • Focused experience
  • Personal LifeOS
  • Link ideas
Features
Read full description

Aino is a fast, focused Markdown workspace for building your personal knowledge system. Write in pure Markdown, connect ideas, and turn your notes into a structured, evolving system. Whether you're capturing thoughts, organizing knowledge, or building your second brain, Aino gives you a clean and powerful space to think. KEY FEATURES • Markdown-first editing Write naturally in Markdown with a fast and minimal editor. • Connected notes Link your notes together and build a network of ideas. • Structured thinking Turn scattered notes into a coherent system. • Focused experience No clutter. Just writing, thinking, and connecting. • Your personal LifeOS Aino grows with you as your knowledge system evolves. Aino is designed for people who think deeply and write often. Start building your second brain today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aino.md/legal/privacy

About

Hyday MD

Features
Read full description

Hyday MD is a Markdown tool built for reading. Originally designed as the mobile reader for the Hyday note-taking app, it lets you comfortably read notes stored in iCloud Drive on your iPhone and iPad. It is also a general-purpose lightweight Markdown reader — any .md file written with other tools displays just fine. DESIGN PRINCIPLES • Hands off your syntax — your files stay untouched • Content first — the UI stays quietly in the background • Typography is the design — hierarchy through type and whitespace, not decoration FEATURES • Frontmatter parsing: title, type, tags, createdAt, and lastModified extracted and displayed automatically • Wiki links: [[note name]] jumps straight to the linked note; the back button returns to the previous one • Mermaid diagrams: flowcharts, sequence diagrams, and more rendered inline, with full-screen viewing • Reading font size: four levels (S / M / L / XL), independent of the system setting • Edit and write back: tap edit, make changes, save — lastModified updates in your local time zone • LaTeX math: inline and block syntax both supported • Code blocks: syntax highlighting, language labels, one-tap copy • Tables: GFM alignment syntax supported • Task lists: GFM checkboxes rendered in brand colors • Local images: paths resolved relative to the .md file • hyday-asset custom scheme: maps to the assets/ folder at the vault root • Hyday life log marks: start, end, now, idea, important — five states told apart by color • Subfolder browsing: only folders containing Markdown are shown, keeping lists clean • Recent files: jump back to your last-read note straight from the home screen • Recent folders: persisted with iOS security-scoped bookmarks — no re-picking after relaunch • Bundled fonts: Fira Sans Condensed and Fira Code, fully rendered even offline PRIVACY • No user data collected • No analytics, no tracking • No network requests (unless your files reference web images) • Recent files and folders lists live only on your device GOOD FOR • Writers, engineers, and researchers who keep Markdown notes • Hyday note app users • Anyone who reads technical docs, lecture notes, or study notes on their phone NOT FOR • Rich-text (WYSIWYG) editing • Team collaboration or cloud version control • Reading PDF, Word, or other formats

Screenshots

Aino4 screens
Hyday MD4 screens

Verdict

The call

The clearest difference is price: Aino at Free against Hyday MD's $0.99. Aino also leads on update cadence (every 5 days vs every 3 weeks). Hyday MD's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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

Aino is free to download; Hyday MD costs $0.99 up front. Aino sells 4 in-app purchases, starting at $2.99 per month. Hyday MD asks for nothing beyond the download.

UpkeepUpdate frequency

Aino ships an update every 5 days, Hyday MD every 3 weeks. Both last shipped on October 25, 2026.

Scorecard3 real differences · 6 level
Aino versus Hyday MD: the parameters behind the verdict, then further details
ParameterAinoHyday MD
PriceFree — better$0.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size102 MB29 MB
Age rating4+4+
Developer宜丙 林TZU YING WU

In-app purchases

4 purchases

Aino

Subscriptions3
  • Aino Pro Monthly7 Days trial$2.991 Month
  • Aino Pro Founder Yearly7 Days trial$19.991 Year
  • Aino Pro Yearly7 Days trial$24.991 Year
One-time1
  • Aino Pro Lifetime$249.99
None

Hyday MD

No in-app purchases

Questions

Is Aino free?
Aino is free to download, with in-app purchases available.
Is Hyday MD free?
Hyday MD costs $0.99, with no in-app purchases.
Do Aino or Hyday MD have ads?
Neither Aino nor Hyday MD shows ads.
Which is updated more often, Aino or Hyday MD?
Aino ships an update every 5 days, and Hyday MD every 3 weeks. Most recently, Aino was updated on October 25, 2026 and Hyday MD on October 25, 2026.

Other comparisons