Level Devil vs Kainy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Level Devil
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The Official Tank Monitoring app from Electronic Sensors Inc. Monitor your tanks levels from anywhere on your phone.
Kainy
This app offers a minimalist web browsing experience, eliminating traditional address and search bars. It provides unique ways to open URLs, including QR code scanning, clipboard reading, and app schemes.
- Address and search bar-free interface
- QR code URL scanning
- Clipboard URL reading
- App scheme URL opening
- Minimalist design
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The ultimate small web browser - probably the first in the universe without address and search bars - opens the URL in these way: 1、Click on the icon in the upper right corner to scan the URL QR code 2、Read the URL in the clipboard 3、Via app scheme 订阅价格和条款： 此应用提供每年12元的自动续订每年订阅，以提供解锁全部内容和其他高级功能。 订阅成功后将会自动续订，并从iTunes账户中进行扣费；如想取消自动续订功能，请在当前订阅期结束的至少24小时之前，于iTunes设置中手动取消该功能。购买订阅之后，所有未到期的试用天数将被强制取消。用户可以在订阅成功后，在本人苹果商店用户账号中管理续订等功能。 您对此应用程序的使用受 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 上提供的服务条款的约束。 收集和使用您的数据受 https://kainy.cn/app/privacy.html 上的隐私政策约束。
Screenshots
Verdict
The clearest difference is in-app purchases: Level Devil at none against Kainy's 1. Level Devil also leads on iOS requirement (8.0 vs 11.0). Kainy's advantage is update cadence (every 3 weeks vs every 4 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. Kainy sells 1 in-app purchase, starting at $1.99 per year. Level Devil asks for nothing beyond the download.
Level Devil ships an update every 4 months, Kainy every 3 weeks. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.
| Parameter | Level Devil | Kainy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 56 MB | 41 MB |
| Age rating | 4+ | 17+ |
| Developer | SensorTech, LLC | Qucai Laicai (Shenzhen) Network Co., Ltd. |
In-app purchases
Level Devil
No in-app purchases
Kainy
- 包年会员$1.991 Year
