Comparison

HelixNotes vs Kept

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

Head to head
About

HelixNotes

A private, open-source Markdown note-taking app that keeps your data on your device. Organize notes with notebooks, tags, and wiki links, and utilize advanced features like mathematical notation and diagrams.

Highlights
  • Local Markdown storage
  • Visual and source code editor
  • Notebooks, tags, and wiki links
  • Task management and calendar views
  • KaTeX and Mermaid diagram support
  • Version history and backups
  • Optional WebDAV sync
Features
Read full description

HelixNotes is a private, open-source Markdown notes app. Your notes remain standard Markdown files under your control. No account is required, and HelixNotes has no company-operated cloud. Write with a clean visual editor or switch to source mode when you want direct access to the Markdown. Organize your work with notebooks, tags, wiki links and full-text search. Features include: • Tasks collected from checklists across your notes • List and calendar views with priorities and due dates • Wiki links and an interactive graph view • Daily notes with a built-in calendar • Markdown tables, code blocks and syntax highlighting • KaTeX mathematical notation and Mermaid diagrams • Outline navigation and tag autocomplete • Version history and automatic backups • Light, dark and customizable themes • Optional WebDAV sync with your own server • Optional AI tools using your own provider Nothing leaves your device unless you enable a feature that connects to an external service. Your notes stay readable outside HelixNotes, without a proprietary format or platform lock-in. HelixNotes is free software released under the GNU AGPLv3. Its source code is publicly available on GitLab.

About

Kept

Features
Read full description

Kept is a warranty tracker with no account, no ads, no subscription and no data collection. Snap the receipt, note the serial, set the coverage. Kept warns you 30 days and 7 days before a warranty ends, so the repair is free because you could find the proof. WHAT IT DOES • Log a purchase in about twenty seconds including receipt photos, serial number, price, store • Quiet warnings before coverage ends (you choose: 90, 30, or 7 days out) • Serial numbers detected from your receipt photo, entirely on your device • An "expiring soon" widget for your Home Screen • One-tap serial copy when you're on the phone with support • Export everything as a file anytime, your records are yours WHAT IT DOESN'T DO • No account. No ads. No subscription. No analytics. • Nothing you enter ever leaves your phone. Our App Store privacy label is "Data Not Collected" because we don't. Kept is free, forever. Every feature. If it earns a place on your Home Screen or saves you a repair bill there's a tip jar in Settings.

Screenshots

HelixNotes2 screens
Kept4 screens

Verdict

The call

The clearest difference is in-app purchases: HelixNotes at none against Kept's 3. HelixNotes also leads on iOS requirement (14.0 vs 26.0). Kept's advantage is update cadence (every 3 days vs every 3 weeks). On price, 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. Kept sells 3 one-off in-app purchases. HelixNotes asks for nothing beyond the download.

UpkeepUpdate frequency

HelixNotes ships an update every 3 weeks, Kept every 3 days. The most recent releases landed on September 18, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 6 level
HelixNotes versus Kept: the parameters behind the verdict, then further details
ParameterHelixNotesKept
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size18 MB4 MB
Age rating4+4+
DeveloperYuri KaramianMoses Smith

In-app purchases

None

HelixNotes

No in-app purchases

3 purchases

Kept

One-time3
  • Coffee$1.99
  • Lunch$4.99
  • Legend$9.99

Questions

Is HelixNotes free?
HelixNotes is free to download, with no in-app purchases.
Is Kept free?
Kept is free to download, with in-app purchases available.
Do HelixNotes or Kept have ads?
Neither HelixNotes nor Kept shows ads.
Which is updated more often, HelixNotes or Kept?
HelixNotes ships an update every 3 weeks, and Kept every 3 days. Most recently, HelixNotes was updated on September 18, 2026 and Kept on September 28, 2026.

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