HackLens vs Burn451
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HackLens
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HackLens is the best way to browse, read, and follow Hacker News on mobile. Enjoy a clean, modern, and fast interface built for reading and discovering the latest in tech. Key Features: Clean and modern UI Read full stories or generate AI-powered summaries Search stories View trending stories from the last 1h, 6h, or 24h Bookmark stories to read later Appearance settings: light/dark mode + adjustable font size Follow topics you care about Get notifications when your topics have new stories Sync bookmarks, topics, and appearance settings across devices Whether you're a developer, creator, designer, or tech enthusiast, HackLens keeps you updated with the stories that matter. A better way to explore Hacker News — wherever you are.
Burn451
This app helps you manage your saved articles by automatically deleting them after a set time unless you explicitly keep them. It features AI summarization and a curated knowledge base for content that survives the deletion process.
- 24-hour countdown timer for saves
- AI-summarized vault
- Automatic content extraction
- Clean reader mode
- Markdown export
- Cloud sync
- MCP-ready Vault access
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Burn451 is a reading tool that helps you save links, read them later, and decide within about 24 hours whether to keep or let go. Too many saved pages never get opened. Burn451 gives each new save a short window: open it in a clean reader, then keep it or release it. What you choose to keep can move into Spark and then Vault, so your library stays intentional. What you can do: • Save links from Safari or any app with the Share Extension. • Read in a clean, focused reader without ads or clutter. • Find pages again with full-text search. • Organize saved pages with tags. • Keep a Spark and Vault workflow for what is worth keeping. Optional AI-assisted features can help you review what you saved. They are not included for every account, and this listing does not promise free AI for all users. You decide what stays. Unread items can expire. Burn451 does not permanently delete every link after 24 hours. If a page cannot be extracted, that save is held and does not burn. You can retry extraction or paste the text. Listen with system text-to-speech in the reader. Export from Vault, including Markdown and a direct Obsidian folder export, is available and is not sold as a Pro-only feature. Full-text search is available to every account. Privacy first. Your reading stays yours. No ads. No selling your data. Terms of Use: https://burn451.cloud/terms.html Privacy Policy: https://burn451.cloud/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: HackLens at none against Burn451's 2. HackLens also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, 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
Both are free to download. Burn451 sells 1 in-app purchase, starting at $4.99 per month. HackLens asks for nothing beyond the download.
HackLens ships an update monthly, Burn451 every 2 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | HackLens | Burn451 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, Mac |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 33 MB | 12 MB |
| Age rating | 12+ | 4+ |
| Developer | Azz-eddine BERRAMOU | 国庆 沈 |
In-app purchases
HackLens
No in-app purchases
Burn451
- Burn Pro Monthly14 Days trial2 variants$4.991 Month
