# UmCAService

> UmCAService (iPhone/iPad app by AVTOR LLC.)

- Source: https://appshunter.io/ios/app/umcaservice/id1477465404 (this page in markdown: same URL + `.md`)
- Developer: [AVTOR LLC](https://appshunter.io/developer/1381413862)
- Category: Business, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 59 MB
- Languages: English, Russian, Ukrainian
- Released: 2021-03-08
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/umcaservice/id1477465404/reviews.md

## What is UmCAService?

UmCAservice - cross-platform cryptographic REST API service

Main tasks:
Electronic signatures creation(raw signature or envelopes in CAdES BES, CAdES TS, CAdES Long C, CAdES Long X formats)
Electronic signatures, timestamps and certificates validation
Key-stores management(generation and removal of keys with certificates, updating certificates on the keystores, change of pin code)
Asymmetric encryption and decryption.
Key-store types supported:
Hardware: devices supporting PKCS#11 interface(for example Avtor ST337 or Avtor ST338)
Software: Pfx(PKCS#12), JKS (Java Key Store), .DAT(IIT), .ZS2(Accredited Certification Authority “Ukraine”)

Two editions of the service are currently available:
Basic - free edition of the service for non-commercial use. The main functional includes creation of advanced/qualified electronic signatures.
Full - edition of the service for commercial use. The main functional includes creation and verification of advanced/qualified electronic signatures, management of certificates and key-stores, asymmetric encryption and decryption of data(e.g. creation of cryptographic envelopes).

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| UmCAService - 1 month | $4.99 | per month |
| UmCAService - 6 month | $24.99 | per 6 months |
| UmCAService - 12 month | $49.99 | per year |



## Version history (last 5 releases)

### 1.87 — 2023-11-30

- Added compatibility with iOS 17
- Fixed bugs

### 1.69 — 2023-10-02

- Application performance optimization
- Bug fixes

### 1.68 — 2023-04-06

- Application performance optimization
- Bug fixes

### 1.67 — 2023-03-30

- Application performance optimization
- Bug fixes

### 1.66 — 2023-03-14

- Improved UI/UX
- Added service settings

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## More apps by AVTOR LLC

- [AVTOR KP-375](https://appshunter.io/ios/app/avtor-kp-375/id1429705560)
- [IOCardUser](https://appshunter.io/ios/app/iocarduser/id1605762998)
- [CryptoFiles: Files Encryption](https://appshunter.io/ios/app/cryptofiles-files-encryption/id6446115800)

All apps by AVTOR LLC: https://appshunter.io/developer/1381413862

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*