Comparison

专利业务办理 vs Z2Y Java Principles

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

专利业务办理

Free

🔧 Utilities

★ 3.02 ratingsView app →

Z2Y Java Principles

Helping You Understand Java.

$1.99

🔧 Utilities

No ratingsView app →

About

专利业务办理

Features

Read full description

本软件提供专利电子申请登录、电子签名数字证书服务、专利缴费服务、专利事务服务等专利相关业务。

About

Z2Y Java Principles

Features

Read full description

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

专利业务办理4 screens

Z2Y Java Principles4 screens

Verdict

The call

The clearest difference is price: 专利业务办理 at Free against Z2Y Java Principles's $1.99. 专利业务办理 also leads on iOS requirement (11.0 vs 15.6). Z2Y Java Principles's advantage is update cadence (every 5 days vs every 8 months) and device support (4 vs 2). On ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

专利业务办理 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.

UpkeepUpdate frequency

专利业务办理 ships an update every 8 months, Z2Y Java Principles every 5 days. The most recent releases landed on June 5, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 4 level

专利业务办理 versus Z2Y Java Principles: the parameters behind the verdict, then further details
Parameter	专利业务办理	Z2Y Java Principles
Price	Free — better	$1.99
Rating	3.0 (2 ratings) — better	—
Number of ratings	2 — better	—
Update frequency	Every 8 months	Every 5 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod, Mac — better
Requires iOS	11.0 — better	15.6
Further details — not scored
Size	24 MB	257 MB
Age rating	4+	4+
Developer	Intellectual Property Publishing House	洁欧阳

In-app purchases

None

专利业务办理

No in-app purchases

None

Z2Y Java Principles

No in-app purchases

Questions

Is 专利业务办理 free?

专利业务办理 is free to download, with no in-app purchases.

Is Z2Y Java Principles free?

Z2Y Java Principles costs $1.99, with no in-app purchases.

Do 专利业务办理 or Z2Y Java Principles have ads?

Neither 专利业务办理 nor Z2Y Java Principles shows ads.

Which is updated more often, 专利业务办理 or Z2Y Java Principles?

专利业务办理 ships an update every 8 months, and Z2Y Java Principles every 5 days. Most recently, 专利业务办理 was updated on June 5, 2026 and Z2Y Java Principles on September 9, 2026.