Signer.Digital Digital Signature, PKI
Digital Signature of eReturns, PDF & Web User Auth, RSA Encryption/Decryption, Certificate Enrollment/Download on Smartcard.
Users
3,000,000
Rating
1.8 ★
Reviews
61
Version
5.1.2
Updated
August 6, 2025
Size
56.68KiB
Est. revenue / mo
$300,000
In-app purchases
No
Languages
—
Description
2,353 ch
Optimized?
No — beatable
Featured
No
Revenue ≈ users/10 (sales) + users/100·$3 (in-app), per the bootcamp model. An "optimized" listing (≥30 languages, ≥3000-char description) is hard to outrank on its main keyword — pick a different keyword.
Users 3,000,0005 days
Reviews 615 days
Rating 1.85 days
Charts grow as the daily crawler records snapshots. A sustained drop in install velocity is the classic shadow-ban signal.