HelixNotes vs Kept
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Kept sells 3 one-off in-app purchases. HelixNotes asks for nothing beyond the download.
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.
HelixNotes ships an update monthly, Kept every 4 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.
| Parameter | HelixNotes | Kept |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 20 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuri Karamian | Moses Smith |
Customer experience
HelixNotes
Kept
In-app purchases
HelixNotes
No in-app purchases
Kept
- Coffee$1.99
- Lunch$4.99
- Legend$9.99









