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

This app helps you track warranties and important purchase details. It allows you to log items with receipt photos and serial numbers, and provides timely alerts before coverage expires. All your data is stored locally on your device, ensuring privacy.

Highlights
  • Log purchases with receipt photos
  • Note serial numbers
  • Set warranty coverage alerts
  • Serial number detection from photos
  • Home screen widget for expiring items
  • One-tap serial copy
  • Export all records
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 4 days vs monthly). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for HelixNotes against 5.0 for Kept. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

HelixNotes ships an update monthly, Kept every 4 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
HelixNotes versus Kept: the parameters behind the verdict, then further details
ParameterHelixNotesKept
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings2 — better1
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size20 MB5 MB
Age rating4+4+
DeveloperYuri KaramianMoses Smith

Customer experience

HelixNotes

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Kept

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

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.
Which has better reviews, HelixNotes or Kept?
HelixNotes and Kept are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do HelixNotes or Kept have ads?
Neither HelixNotes nor Kept shows ads.
Which is updated more often, HelixNotes or Kept?
HelixNotes ships an update monthly, and Kept every 4 days. Most recently, HelixNotes was updated on October 6, 2026 and Kept on October 13, 2026.

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