OnePreview vs Wivlo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnePreview
This app allows you to preview and interact with various developer file formats, including Markdown, code, databases, and archives, directly on your iPhone and iPad. It offers local processing for speed and privacy, with features like PDF export and structured data inspection.
- Markdown and MDX rendering
- JSON, YAML, XML, CSV, TSV, TOML, ENV parsing
- SQLite database inspection
- Source code and log viewing
- ZIP and TAR.GZ archive content preview
- Mermaid diagrams and KaTeX math rendering
- A4 PDF export for Markdown files
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Open Markdown and developer files in OnePreview on iPhone and iPad. OnePreview renders GitHub-style Markdown, MDX, TextBundle and TextPack packages, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, SQLite databases, source code, plain text, logs, and ZIP and TAR.GZ archives. In Files, long-press a supported document, choose Open With, then select OnePreview. A normal tap may use Apple's built-in preview for common file types. Inside OnePreview, switch between rendered Markdown and source, view Mermaid diagrams and KaTeX math with bundled assets, inspect structured data and SQLite schemas, and check archive contents before extracting. Built for developer workflows, AI-generated files, documentation review, and everyday file browsing. Processing is fast, local-first, and does not require an account. Open a standard Markdown file (.md or .markdown) in the OnePreview app to export an A4 PDF report. Preview continued table headers, wrapped code, Mermaid diagrams and KaTeX formulas, then save the PDF using the system file interface. Document content is processed locally.
Wivlo
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Wivlo is an AI-powered knowledge workspace for capturing ideas, connecting notes, and turning what you know into useful work. CAPTURE WITHOUT BREAKING YOUR FLOW • Write focused notes with a clean, distraction-free editor • Record voice memos and turn speech into transcripts and summaries • Add images, references, tags, and structured blocks • Find recent notes quickly from Home and Calendar CONNECT YOUR KNOWLEDGE • Link related notes with References • Create Branches to develop ideas without losing context • Organize connected notes into Projects • Search across notes, projects, tags, references, and conversations WORK WITH WIVLO AI • Ask questions grounded in your own notes and projects • Summarize, rewrite, organize, and expand your writing • Attach multiple notes and projects to AI conversations • Save useful AI results as notes and continue building on them • Let background AI analysis make important knowledge easier to rediscover MOVE BETWEEN MOBILE AND WEB Keep your notes and projects synchronized so your knowledge is ready wherever you work. Whether you are researching a topic, planning a project, writing, or building a personal knowledge system, Wivlo helps your ideas stay connected and easy to revisit.
Screenshots
Verdict
The clearest difference is update cadence: Wivlo at every 4 days against OnePreview's every 8 days. Wivlo also leads on iOS requirement (15.1 vs 17.0). 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.
OnePreview ships an update every 8 days, Wivlo every 4 days. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.
| Parameter | OnePreview | Wivlo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 8 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 9 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | 培克 罗 | YOHAN KIM |
In-app purchases
OnePreview
No in-app purchases
Wivlo
No in-app purchases









