Sphinx Data vs eSign App
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Sphinx Data
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The Sphinx Data App is used by Sphinx customers to have easy access to their online content
eSign App
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Sign any document in seconds, and turn any photo into a clean PDF. Draw your signature once and eSign App places it perfectly on any PDF, contract, lease, or form. Need to send a signed scan? Snap a photo and it becomes a sharp, professional PDF you can sign and share in one flow. SIGN ANYTHING, FAST ⢠Draw, save, and reuse your signature and initials ⢠Smart placement finds signature lines for you ⢠Fill forms, add dates, and check boxes with no printer and no scanner PHOTO TO PDF IN ONE TAP ⢠Convert photos, screenshots, and images to PDF instantly ⢠Multi-page documents from your camera roll ⢠Auto edge detection for paper documents ORGANIZED AND PRIVATE ⢠Folders keep contracts, receipts, and IDs sorted ⢠Everything stays on your device, offline first ⢠iCloud sync available with Premium Built for the moments that cannot wait: the lease due tonight, the permission slip in the morning, the contract sitting in your inbox. Download eSign App and sign your next document in under a minute. Privacy: https://www.pixelport.io/app/photo-to-pdf-convert-scan-edit/privacy-policy Terms: https://www.pixelport.io/app/photo-to-pdf-convert-scan-edit/terms-conditions EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Sphinx Data at none against eSign App's 3. Sphinx Data also leads on update cadence (fortnightly vs every 11 months) and device support (3 vs 1). On price and ads there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. eSign App sells 3 in-app purchases, starting at $7.99 per month. Sphinx Data asks for nothing beyond the download.
Sphinx Data ships an update fortnightly, eSign App every 11 months. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.
| Parameter | Sphinx Data | eSign App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly ā better | Every 11 months |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone |
| Requires iOS | 12.0 ā better | 17.6 |
| Further details ā not scored | ||
| Size | 32 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | Sphinx ApS | PixelPort LLC |
In-app purchases
Sphinx Data
No in-app purchases
eSign App
- PDF Pro - Monthly$7.991 Month
- PDF Pro - Annual$39.991 Year
- PDF Pro - Lifetime$89.99







