OnePreview vs DBF Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnePreview
View and export various file types like Markdown, code, and archives locally on your device. Create PDF reports from Markdown files with advanced rendering options. Inspect data and code without direct editing.
- Preview Markdown with code highlighting
- Render Mermaid diagrams and KaTeX formulas
- Export Markdown to A4 PDF reports
- Inspect SQLite databases and ZIP archives
- Supports over 20 file formats
- Local-first, no account required
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Preview Markdown, source code, structured data and archives on iPhone and iPad. OnePreview is a local-first file viewer with no account required. READ MARKDOWN, DIAGRAMS AND MATH View GitHub-style Markdown with tables, task lists and highlighted code. Switch between rendered content and source. Mermaid diagrams and KaTeX formulas use bundled rendering assets. EXPORT MARKDOWN TO PDF Open a standard Markdown file (.md or .markdown) in OnePreview to create an A4 PDF report. Check the actual PDF preview, with continued table headers, wrapped code, Mermaid diagrams and KaTeX formulas, then save it using the system file interface. Document content is processed on your device. INSPECT DATA, CODE AND ARCHIVES Read structured data and source code, inspect SQLite schemas and sample rows without editing the database, and see the folder hierarchy inside ZIP and TAR.GZ archives before extracting. SUPPORTED FORMATS Markdown (.md, .markdown), MDX, TextBundle, TextPack, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, INI, properties, Apple property lists (plist), SQLite (.sqlite, .sqlite3, .db), source code, plain text, logs, ZIP, TAR.GZ and TGZ. Syntax highlighting supports languages including Swift, Python, JavaScript, TypeScript, Java, C/C++, Objective-C, Ruby, Rust and Shell. OPEN YOUR FILES Tap Open File in OnePreview, or long-press a supported document in Files, choose Open With, then select OnePreview. A normal tap in Files may use Apple's built-in preview; OnePreview does not replace every system preview on iPhone or iPad. Try the sample folder from the home screen to explore supported formats.
DBF Viewer
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DBF Viewer is a database workspace for opening, inspecting, searching, and exporting dBASE DBF tables on iPhone, iPad, and Mac. DBF DATABASE VIEWER Open DBF tables directly on your device along with DBT and FPT memo field files. Inspect table structure, view column types, count total records, and browse data rows. DBASE VIEWER: SEARCH AND EDIT Search across all fields, filter records by query, and edit cell contents directly within the table grid. DBF VIEWER 2000: EXCEL AND CSV EXPORT Export DBF tables to Microsoft Excel (.xlsx) or CSV format with a single tap so you can share or analyze your database data in modern spreadsheet applications. DBF FILE VIEWER: PRIVACY AND LOCAL PROCESSING Your files, database tables, and edits stay strictly on your device. No cloud uploads or accounts are required. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms
Screenshots
Verdict
The clearest difference is in-app purchases: OnePreview at none against DBF Viewer's 2. DBF Viewer's advantage is iOS requirement (15.0 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. DBF Viewer sells 2 in-app purchases, starting at $6.99 per 7 days. OnePreview asks for nothing beyond the download.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.
| Parameter | OnePreview | DBF Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | 培克 罗 | Rush Tools LLC |
In-app purchases
OnePreview
No in-app purchases
DBF Viewer
- Weekly Access$6.997 Days
- Annual Access3 Days trial$69.991 Year









