Atomic KB vs Letterform
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Atomic KB
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Atomic is a client for your self-hosted Atomic knowledge base. It connects to your own server to give you mobile access to your notes, saved articles, and semantic search. Save any web page from Safari or any browser using the Share Extension โ Atomic automatically extracts the article content, generates embeddings, and connects it to your existing knowledge. Features: - Browse, create, and edit markdown notes - Save web articles from any app via the Share Extension - Semantic and hybrid search across your knowledge base - Hierarchical tag browsing - Offline support with local caching - Connect via QR code or manual setup Requires a self-hosted Atomic server. Learn more at https://github.com/kenforthewin/atomic
Letterform
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Letterform is a minimalist, local-first Markdown editor built for writers, developers, students, and thinkers who value absolute clarity and digital privacy. When the interface melts away, what remains is the pure connection between your thoughts and the screen. Letterform combines a powerful plaintext editor with a beautiful real-time previewer, allowing you to draft, structure, and refine your ideas without a single distraction. ELEGANT MARKDOWN EDITOR โข Format seamlessly as you type with structured headers, text emphasis, blockquotes, and clean lists. โข Access swift markdown shortcuts right from your custom keyboard toolbar. โข Beautifully formatted typography makes both writing and editing an absolute pleasure. EFFORTLESS LOCAL DEEP ORGANIZATION โข Keep your workspace perfectly structured using a clean, uncluttered folder architecture. โข Track your metrics at a glance with built-in character counters. โข Total Privacy: Your documents stay completely local on your device. Your words are entirely yours. BEYOND PLAIN TEXT โข Embed rich media and image attachments natively into your workspace. โข Preview rendered markdown output instantly with a single tap. โข Manage, rename, and organize assets alongside your writing. Strip away the visual noise. Reclaim your focus. Experience the art of intentional writing with Letterform.
Screenshots
Verdict
Atomic KB and Letterform are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Atomic KB | Letterform |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | โ |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 15.0 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 6 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Foldspace Labs LLC | Good Code Club |
In-app purchases
Atomic KB
No in-app purchases
Letterform
No in-app purchases









