FormatFox vs FileKitPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FormatFox
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FormatFox is a free iPhone app that converts images, PDFs, and audio entirely on your device — no subscription, no uploads, and no account. It converts HEIC, JPG, and PNG, resizes images, and combines multiple photos into a single PDF, all offline. A one-time Pro unlock adds batch conversion and audio transcoding to M4A, WAV, AIFF, and CAF. Most converters meter you to one file, hide a weekly subscription behind the Save button, or quietly upload your private files to a server. FormatFox does none of that. Every conversion runs 100% on your device. Your files are not uploaded. It even works in Airplane Mode. FREE, forever: • Convert HEIC, JPG and PNG • Resize images • Combine photos into a single PDF • See the exact before → after size of every file PRO — one simple, one-time unlock (no subscription): • Batch-convert many files at once • Transcode audio: M4A, WAV, AIFF, CAF • Quality & compression control • Keep EXIF metadata • "Convert with FormatFox" share action from any app • Remove ads No account. No login. No tracking of your files. Just convert and get on with your day. Recommendations for our other apps load online. Their views and taps are counted as daily totals, without personal profiles or user/device identifiers. See our privacy policy.
FileKitPro
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ONE APP. ALMOST EVERY FORMAT. POWERFUL PDF EDITING. Stop switching apps for every file. Convert, compress and edit PDFs, Office documents, videos, audio, images and subtitles. DOCX, XLSX, PPTX, HEIC, WebP, MP4, MKV, FLAC and more—all in one powerhouse, with no account or conversion uploads. 96 input formats. 2,300+ conversion combinations. Professional PDF editing and on-device OCR. Every supported tool is free to use; FileKitPro+ unlocks unlimited batch processing and larger merges. BUILT FOR IPHONE & IPAD • Import a file, choose your output, fine-tune settings, then save or share the result. • Convert and edit directly on your device. Your files stay yours. FULLY ADAPTED FOR iPhone Duo • Responsive folded and unfolded layouts, landscape, Split View and smarter PDF controls. • On iOS 27.1+, native navigation follows the convenient outer edge. Compatible iPads support Apple Pencil pressure and tilt. VIDEO CONVERTER & TOOLS • Convert MP4, MOV, MKV, AVI, WebM, WMV, FLV and more. • Compress videos, extract audio, or turn video clips into GIFs. • Trim, merge, crop, resize, rotate, change speed, adjust colors, and more. AUDIO CONVERTER & TOOLS • Convert MP3, WAV, M4A, FLAC, AAC, OGG, Opus, AIFF and more. • Trim, merge, normalize volume, remove silence, change speed, and apply audio filters. • Record audio in the app and convert your recordings. PDF EDITOR, OCR & DOCUMENT POWER TOOLS • Open PDFs in Reader; highlight, underline, strike through, annotate and draw with pen, pencil or marker. • Add text, notes, shapes, stamps and watermarks. Fill supported forms with dates and checkmarks, then add handwritten signatures. • Redact sensitive areas, run on-device OCR for searchable scanned PDFs, and add bookmarks. • Merge, split, compress, reorder, rotate, crop, extract, add, delete and number PDF pages. • Compare PDFs, remove metadata, protect or unlock with passwords, and convert PDFs to and from images. • Convert Office documents and more: DOCX, XLSX, PPTX, Markdown, HTML, EPUB, RTF, TXT, CSV, ODT, ODS and ODP. IMAGE CONVERTER • Convert JPG, PNG, HEIC, WebP, GIF, BMP, and TIFF. • Compress, resize, rotate, flip, and adjust image quality. SUBTITLE TOOLS • Convert SRT, VTT, and ASS subtitles. • Extract subtitle tracks or embed subtitles in video. • Detect common text encodings, including UTF-8, GBK, Shift-JIS, and EUC-KR. PRIVATE BY DESIGN File processing happens on your device. Your files are not uploaded to FileKitPro servers for conversion. No account or sign-up is required, and the app includes no analytics or tracking SDK. FREE & FILEKITPRO+ Every supported format and tool is available free. Standard tools process one input file at a time; PDF and video merge tools allow two inputs for free. FileKitPro+ unlocks unlimited batch processing, larger merges, and saving multiple results at once. Choose a monthly or yearly subscription, or a one-time lifetime purchase. Actual prices are shown in your local App Store currency. Terms of Use: https://www.filekitpro.com/terms.html Privacy Policy: https://www.filekitpro.com/privacy.html
Screenshots
Verdict
The clearest difference is ads: FileKitPro at none against FormatFox's shown. FileKitPro also leads on update cadence (every 2 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement 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. FormatFox sells 1 one-off in-app purchase and FileKitPro sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
FormatFox ships an update every 5 weeks, FileKitPro every 2 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | FormatFox | FileKitPro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 6 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Levin David Schwab | 谦 徐 |
In-app purchases
FormatFox
- FormatFox Pro$4.99
FileKitPro
- FileKitPro+ Monthly$2.991 Month
- FileKitPro+ Yearly$24.991 Year
- FileKitPro+ Lifetime$49.99









