ProdigiSign vs SPAI Vault
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ProdigiSign
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Prodigisign App is designed to give you seamless experience to apply for Digital Signature Certificates, eKYC and eSign. We are providing the following features: 1. Video Recording for eKYC & DSC 2. Track DSC Status
SPAI Vault
Securely store and manage important personal documents like passports and IDs on your device. Scan documents quickly, set expiration reminders, and keep everything organized in one private place.
- Secure document vault
- Scan documents in seconds
- Expiration date reminders
- Organize all documents in one place
- Create family profiles
- Fast document search
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SPAI Vault is the simple, secure way to store and manage your most important documents right on your device. Keep passports, IDs, and essential paperwork organized, protected, and always within reach. Scan documents in seconds, set reminders for expiration dates, and access everything whenever you need it. Private by design. Your documents stay secure and under your control. Key Features Secure Document Vault Store passports, IDs, visas, insurance cards, and more in one private place. Scan in Seconds Capture documents using your camera and save them instantly. Expiration Reminders Get notified before important documents expire. All in One Place Keep everything organized and easy to find when you need it. For You and Your Family Create separate profiles to manage documents for each family member. Fast Search Quickly find any document, anytime. Built for Privacy Your documents belong to you. SPAI Vault is designed to keep your information secure and private - so you can store what matters with confidence. No complicated setup. Just scan, store, and stay organized.
Screenshots
Verdict
The clearest difference is in-app purchases: ProdigiSign at none against SPAI Vault's 3. ProdigiSign also leads on iOS requirement (12.0 vs 17.6). SPAI Vault's advantage is update cadence (every 6 days vs every 3 months). On price, 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. SPAI Vault sells 3 one-off in-app purchases. ProdigiSign asks for nothing beyond the download.
ProdigiSign ships an update every 3 months, SPAI Vault every 6 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | ProdigiSign | SPAI Vault |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 271 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | Prodigisign | Sindhu Shekar Chandrashekar |
In-app purchases
ProdigiSign
No in-app purchases
SPAI Vault
- Buy Us a Coffee$1.99
- Support Development$4.99
- Keep SPAI Vault Growing$9.99









