Chas App vs PDF Aide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chas App
This app allows users to earn points by completing surveys for companies. Accumulated points can then be redeemed for prizes. It aims to help businesses gather user feedback.
- Complete surveys
- Earn points
- Redeem points for prizes
- Provide company feedback
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Chas is an app that seeks to improve companies by making surveys to their users. Users taking the survey will receive points after completion of each survey and will be able to exchange points for prizes.
PDF Aide
Streamline your document management with this comprehensive PDF tool. Convert images, Office files, and web pages to PDF, or export PDFs to editable formats. Edit, annotate, merge, split, and secure your documents with ease.
- Convert images, Office files, and web pages to PDF
- Export PDFs to editable formats
- Annotate and draw on documents
- Merge and split PDF files
- Compress PDF file size
- Password protect sensitive documents
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PDF Aide: Revolutionizing Your Document Workflow with Professional Editing and Conversion! Tired of constantly switching between multiple apps to process documents? PDF Aide is your best choice—the most comprehensive and user-friendly PDF processing tool designed specifically for iPhone. Whether you're a student, business professional, or working remotely, our all-in-one toolkit helps you convert, edit, sign, and manage documents in seconds. Powerful conversion tools can convert virtually anything to high-quality PDFs or export PDFs to editable formats: • Image to PDF: Instantly convert photos, scans, and gallery images. • Office Conversion Suite: Seamlessly convert Word, Excel, and PowerPoint documents to PDF. • Web to PDF: Save any webpage as a PDF for offline reading and archiving. • Text and More: Convert plain text and other document types with a single click. Advanced editing and annotation: More than just viewing PDFs, take control of them: • Annotations: Add annotations and draw directly on documents. • Merge and Split: Merge multiple files into a single PDF or extract specific pages into a new document. • Compression: Reduce file size for easy sharing via email or chat tools without loss of quality. Security and Organization: Your privacy and file organization are our top priorities: • Password Protection: Protect sensitive information using advanced encryption technology. • Search: Easily and quickly find the content you need in long documents. Why choose PDF Aide? • High Fidelity: Preserves original fonts, layout, and formatting during conversion. • Privacy First: We handle your documents securely—your data is safe. • User-Friendly: A clean and intuitive interface designed to maximize your productivity Subscriptions & Privacy: Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscriptions in your App Store Account Settings. Privacy Policy: https://pdf.kestrelcybers.com/privacy-policy.html Terms of Use (EULA): https://pdf.kestrelcybers.com/user-agreement.html Contact Us: For any inquiries or support, please contact us at: pdfaide.ios@outlook.com
Screenshots
Verdict
The clearest difference is rating: PDF Aide at 5.0 against Chas App's 1.0. PDF Aide also leads on update cadence (every 3 days vs every 11 days). Chas App's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.6). On price, ratings volume, 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. PDF Aide sells 2 in-app purchases, starting at $4.99 per month. Chas App asks for nothing beyond the download.
PDF Aide holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Chas App ships an update every 11 days, PDF Aide every 3 days. Both last shipped on October 24, 2026.
| Parameter | Chas App | PDF Aide |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 11 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 44 MB | 26 MB |
| Age rating | 4+ | +4 |
| Developer | Roberto Roesch | KESTREL CYBER PTE. LTD. |
Customer experience
Chas App
PDF Aide
In-app purchases
Chas App
No in-app purchases
PDF Aide
- monthly membership7 Days trial$4.991 Month
- Annual Membership$39.991 Year









