SFERRA vs КриптоКлюч
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SFERRA
This application provides secure access to web-based platforms, transforming them into a native-like mobile experience. It ensures your authorized zone remains up-to-date and accessible, eliminating the drawbacks of adaptive web services.
- Secure account access
- Web-based platform integration
- Native mobile app analogue
- Always up-to-date
- Eliminates adaptive web disadvantages
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SFERRA is an application to securely access to you account. It can be used to access to web-based platforms and allows to work in the authorized zone of the web-based application as soon the app has been downloaded and personalized to work with the exact web-app. SFERRA allows to eliminate all the disadvantages of an adaptive web service and turn it into a complete analogue of a native smartphone application that will always be up-to-date and accessible to the client.
КриптоКлюч
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КриптоКлюч — новейшее мобильное приложение, с помощью которого можно просто, удобно и максимально безопасно подписывать документы электронной подписью. Приложение позволяет подписывать документы квалифицированной и неквалифицированной электронной подписью при помощи ключей, созданных прямо с мобильного устройства. Также документы можно подписывать с применением аппаратных токенов, подключаемых к мобильному устройству через провод или бесконтактно по NFC. Благодаря использованию этой современной технологии, обеспечивается совершенно новый уровень безопасности, ранее не доступный в любых иных средствах электронной подписи со смартфона. Ваши ключи находятся под надежной защитой и не могут быть доступны злоумышленнику не только в случае потери или кражи мобильного устройства, но и в случае полной компрометации серверных компонент или присутствия вредоносного ПО на смартфоне
Screenshots
Verdict
The clearest difference is review sentiment: SFERRA at 100% against КриптоКлюч's 25%. КриптоКлюч's advantage is update cadence (every 2 months vs every 4 months). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SFERRA ships an update every 4 months, КриптоКлюч every 2 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | SFERRA | КриптоКлюч |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (7 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 30 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | SafeTech Ltd | LLC ST Crypt |
Customer experience
SFERRA
КриптоКлюч
In-app purchases
SFERRA
No in-app purchases
КриптоКлюч
No in-app purchases
