iKF vs Z2Y Java Principles
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iKF
Tailor your audio experience with personalized settings and unique functionalities. This app allows for custom sound profiles, noise cancellation adjustments, and control over device interactions. It also provides essential management features like battery checks and firmware updates.
- Burn-in Function
- Noise Cancellation modes
- Customise gesture controls
- Customise equaliser settings
- Set a private alarm
- Check battery levels
- Update firmware
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Sound made for you. Personalise your listening experience with custom settings and unique features: • Burn-in Function • Switch between Noise Cancellation modes • Customise gesture controls • Customise equaliser settings • Customise pop-ups • Set a private alarm • Headphone listening mode • Check battery levels • Update firmware • Get tips & support • More unique features Supported devices: All iKF devices with app logo are supported
Z2Y Java Principles
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Here, you can learn the principles of Java and its related knowledge for work, creation, and interviews, among other purposes. Use the system to track and manage your learning, and add notes at any time, making it easy to secure an offer. Future updates will include: adding local & online bookmarks, learning report statistics, learning plan reminders; the default knowledge base content will be continuously updated!!
Screenshots
Verdict
The clearest difference is price: iKF at Free against Z2Y Java Principles's $1.99. Z2Y Java Principles's advantage is update cadence (every 5 days vs every 3 weeks) and device support (4 vs 2). On ads, in-app purchases and iOS requirement 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
iKF is free to download; Z2Y Java Principles costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iKF ships an update every 3 weeks, Z2Y Java Principles every 5 days. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.
| Parameter | iKF | Z2Y Java Principles |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.2 (85 ratings) — better | — |
| Positive reviews | 75.8% of reviews | — |
| Number of ratings | 85 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 242 MB | 257 MB |
| Age rating | 4+ | 4+ |
| Developer | Dongguan Awu Technology Co., Ltd. | 洁 欧阳 |
In-app purchases
iKF
No in-app purchases
Z2Y Java Principles
No in-app purchases
