KayWallet vs Convertology
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KayWallet
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Reclaim control over your identity and personal information with KayWallet. What does KayTrust Wallet offer? - Create descentralized digital identities on your device. Only you have the keys! - Log on securely on websites. No SMS codes, no passwords to forget. - Manage and share your verifiable credentials, straight from your device. You decide 100% which documents you need to keep around and share with the people or organizations of your choice. "Kay" is the Quechuan word for the essence of things and people. KayWallet is compatible with latest W3C Verifiable Credentials and Decentralized Identity open standards, as well as EBSI network in Europe. Its security can optionally be strengthened by using an interoperable distributed ledger, to make things immutable and impossible to falsify.
Convertology
This utility app offers precise unit conversions across a vast range of categories, from everyday measurements to specialized scientific and engineering units. It features a clean interface with quick search, favorites, history, and adjustable precision for efficient use in various settings.
- Extensive unit categories
- Quick unit search
- Favorites and history
- Adjustable result precision
- Light and dark mode interface
- Copy and share results
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Convertology is a modern unit converter built for speed, clarity, and high-precision results. Convert everyday measurements and specialized units across length, area, volume, weight, temperature, time, speed, pressure, energy, power, data, cooking, currency, clothing sizes, medical lab values, binary, hexadecimal, astronomy, engineering, science, and more. Designed for real use: - Search units quickly with localized names - See helpful unit explanations directly on the conversion screen - Save frequent conversions to Favorites - Reopen recent work from History - Adjust result precision when you need more detail - Copy or share results when you need them elsewhere - Use a polished iPhone interface with light and dark mode - Work across hundreds of units and thousands of conversion paths Convertology is useful in the kitchen, while traveling, at school, at work, in the lab, or anywhere a quick and reliable conversion saves time. The interface stays focused on the conversion itself, with clear inputs, readable results, and unit information that helps you understand what you are converting. Convertology is free to use with ads. Prefer an ad-free experience? Remove ads permanently with a one-time purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.strujiclabs.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: KayWallet at none against Convertology's 2. KayWallet also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.6). Convertology's advantage is update cadence (every 6 days vs every 5 weeks). On price 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. Convertology sells 2 in-app purchases, starting at $3.99 per 7 days. KayWallet asks for nothing beyond the download.
KayWallet ships an update every 5 weeks, Convertology every 6 days. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.
| Parameter | KayWallet | Convertology |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 51 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | NTT DATA Peru SAC | ADNAN STRUJIC |
In-app purchases
KayWallet
No in-app purchases
Convertology
- Weekly Premium$3.997 Days
- Yearly Premium$29.991 Year
