Bulb Email vs Trelk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bulb Email
This email client prioritizes speed and efficiency with a voice-first interface. It automatically categorizes messages, provides daily digests, and allows quick responses by generating draft options from spoken commands. Content snippets can be pre-set for consistent replies.
- Voice-first email responses
- Automatic email classification
- Inbox and outbox digests
- Customizable content snippets
- Draft sharing for consistency
- Secure and private
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Bulb is a fast, smart, and voice-first email client that helps you spend less time on email and respond to emails on-the-go. Features include: - Automatic email classification based on categories you set. - Automatic inbox and outbox digest to stay on top of all your emails at a glance. - Respond to email by uttering a few word to let the app know what and how to respond and just pick from one of three drafts to send. - Set content snippets so that the App will automatically include them in generated drafts based on context. - Share drafts with others for maintaining brand identity consistency. The Bulb team cares deeply about security and privacy, that is why we don't store any information about your inbox or emails in our servers. Log in with your Gmail account and save time on doing emails today!
Trelk
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Trelk is your personal knowledge engine. Save anything you read — articles, research papers, YouTube videos, PDFs, newsletters, documentation — and watch your understanding grow as AI reveals how everything connects. No subscriptions. No cloud dependency. No data lock-in. Buy once, own it forever. HOW IT WORKS Save content from any source: share a link, scan a QR code, import a PDF, or write your own notes in the built-in Markdown editor. Trelk's on-device AI reads, summarizes, and indexes everything locally. As your library grows, Trelk automatically discovers connections between ideas — surfacing relationships you'd never find on your own. YOUR PERSONAL KNOWLEDGE GRAPH Every piece of content becomes a node in your knowledge graph. Trelk maps conceptual links between articles, papers, and notes — visually showing how topics relate across your entire library. Watch isolated readings transform into an interconnected web of understanding. OPEN-SOURCE AI, ON YOUR DEVICE Trelk ships with open-source models from Hugging Face that run entirely on your phone. No API keys, no subscriptions, no data leaving your device. Want more power? Bring your own OpenAI or Anthropic key, or download any GGUF model directly from Hugging Face. ASK YOUR LIBRARY Ask questions and get answers grounded in what you've actually read. Hybrid retrieval — full-text search combined with semantic understanding — finds the most relevant content across your entire library. Every answer includes source citations linking back to your original items. FLASH REVIEW & SPACED REPETITION Knowledge fades without review. Trelk generates flash review questions from your content and uses spaced repetition to help you retain what matters. Track your retention score, review streaks, and topic performance over time. DAILY PULSE Start each day with an AI-generated synthesis of your recent saves — key themes, emerging patterns, and suggested connections. Your Pulse dashboard shows reading activity, content trends, and progress at a glance. COMMUNITY COLLECTIONS Browse curated collections assembled by the Trelk community. Import entire collections with one tap. Create and share your own. Build knowledge together. OPEN FORMATS, ZERO LOCK-IN Your notes are Markdown. Your database is SQLite. Export your entire library as CSV or JSON anytime. Full backup and restore of your database and all downloaded files. Every byte of your data is in a format any tool can read. BUILT FOR PRIVACY All AI processing happens on your device. Your data never leaves your phone. No accounts required. Sync is optional — choose Dropbox, Google Drive, OneDrive, or iCloud on your own terms. WORKS WITH EVERYTHING Save from Safari, Chrome, or any app via the share sheet. Upload PDFs, Word documents, and Markdown files. Supports articles, research papers, YouTube videos, newsletters, documentation, and personal notes. AVAILABLE IN 6 LANGUAGES English, Portuguese, Spanish, French, German, and Italian. Read more. Think deeper. Connect everything.
Screenshots
Verdict
The clearest difference is update cadence: Trelk at every 3 days against Bulb Email's every 9 days. Bulb Email's advantage is iOS requirement (13.4 vs 15.1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Bulb Email ships an update every 9 days, Trelk every 3 days. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.
| Parameter | Bulb Email | Trelk |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 9 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 28 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Pathlit, Inc. | Nuno Fonseca |
In-app purchases
Bulb Email
No in-app purchases
Trelk
No in-app purchases









