S3 Client vs PDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S3 Client
Access and manage your S3-compatible cloud storage directly from your device's file system. Seamlessly integrate with services like AWS, Backblaze, and MinIO, with files available on demand and automatic synchronization.
- Direct access via Files app and Finder
- Automatic file synchronization
- Support for AWS, Backblaze, MinIO, and more
- Uploads via system share sheet
- Generate pre-signed sharing links
- Supports encryption (SSE-C, AES-GCM)
- Shortcuts automation integration
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Access your S3 storage directly from the Files app, Finder, and other applications on iPhone, iPad, and Mac. Developed by the creator of Working Copy, this application provides seamless integration with S3-compatible storage services. Once configured, S3 buckets appear alongside other cloud storage providers, with files available on demand. Files are downloaded as needed and automatically synchronized back to S3 when modified. The app supports a wide range of S3-compatible services, including AWS S3, BackBlaze B2, CloudFlare R2, DigitalOcean Spaces, MinIO, and others. Files and directories can be uploaded through the system share sheet on iOS and the Services menu on macOS. The app remembers preferred upload destinations for different file types, streamlining file management. Pre-signed sharing links can be generated directly from Finder and the Files app, allowing temporary access to files for up to seven days. Support for server-side encryption with customer-provided keys (SSE-C) and client-side AES-GCM encryption compatible with the Amazon S3 Encryption Client. Comprehensive support for Shortcuts automation enables operations such as listing, downloading, uploading, and moving files. The app is free to use with a single server. A Pro Unlock is required for multiple servers, available as a one-time purchase or a monthly subscription, with access shared across iPhone, iPad, and Mac. A one-week free trial allows users to evaluate Pro features before purchase.
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PDFMaster is a clean and focused PDF reader and document manager built for everyday work. Import, organize, and read PDF files in one workspace, quickly search document content, and mark important information with annotations, highlights, and underlines. Whether you are reading papers, contracts, reports, textbooks, or work documents, PDFMaster helps you stay focused with immersive reading, smooth paging, zoom controls, full-text search, file management, and practical PDF page tools. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy:https://www.pdfmaster.top/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: PDF at every 2 days against S3 Client's every 9 days. PDF also leads on iOS requirement (15.0 vs 18.2). 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. S3 Client sells 2 in-app purchases, starting at $2.99 per month and PDF sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
S3 Client ships an update every 9 days, PDF every 2 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | S3 Client | |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (57 ratings) — better | — |
| Positive reviews | 79.1% of reviews | — |
| Number of ratings | 57 — better | — |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 71 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Anders Borum ApS | 春燕 刘 |
Bugs and requests
S3 Client
Reported bugs
17 issues- Files renamed randomly
- High CPU usage
- Stopped working in iOS 26
- Can't set permissions
- Fails to load S3 buckets properly
Show 12 moreShow fewer
- Duplicating root folders
- Folders missing
- Failing to upload
- No image/video thumbnails
- EXIF option unreliable
- No SSE-C encryption/decryption support
- Does not support IAM policy roles
- Short-lived keys needed
- App locks up Files app
- Requires reboot
- Issues with S3 Minio
- Update issues with older macOS
Requested features
14 requests- Support for WebDAV servers
- Support for Google OAuth for GCS
- Synchronous feature to backup photos automatically
- Configurable AWS endpoint for non-.com endpoints
- Allow import/export of configuration
Show 9 moreShow fewer
- Show number of files in a directory
- Option to clear app cache
- Support for SSE-C encryption/decryption
- Support for IAM policy roles
- Support for S3 buckets with short-lived keys
- Dark mode option
- Advanced analytics dashboard
- Duplicate Settings option for iOS
- Support for public dataset anonymous configuration
Not enough reviews yet to summarise bugs or requests.
In-app purchases
S3 Client
- S3 Files Pro Monthly7 Days trial$2.991 Month
- Lifetime S3 Pro$14.99
- PDFMaster Monthly Subscription2 variants$0.991 Month









