DevTutor vs Java Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DevTutor
Learn to build apps with SwiftUI using replicable code samples and real-time UI previews. Access official Swift documentation offline in English and Chinese, and explore third-party packages.
- Replicable code samples
- Real-time UI previews
- Offline Swift documentation (EN/ZH)
- Third-party package exploration
- SwiftUI learning resources
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"DevTutor" is an application designed to assist developers in creating exceptional apps using SwiftUI. It offers replicable code samples and corresponding UI previews to streamline your coding process. Additionally, it includes local offline access to the official Swift Programming Language documentation in both Chinese and English. ——————————— ◈ Main Features ◈ ——————————— ■ Provide sample code that can be used directly in your project ■ View in real time how your code affects the appearance of the application ■ Provide official bilingual Chinese and English Swift programming language documentation for offline use ■ Explore a collection of third-party packages ■ And more features... ——————————— ◈ Policies & Terms ◈ ——————————— For Privacy Policy, please visit: https://wangchujiang.com/devtutor/privacy-policy.html For Terms of Service, please visit: https://wangchujiang.com/devtutor/terms-of-service.html ——————————— ◈ Contact Me ◈ ——————————— Contact us at kennyiseeyou@gmail.com if you have any problems or questions.
Java Prep
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Java Interview Guide is your ultimate companion for mastering Java interviews. It offers a curated collection of common interview questions, detailed answers, and practical examples covering core Java, data structures, algorithms, Spring, multithreading, databases, and more. Whether you're preparing for your first job or aiming for a top tech company, this app helps you review efficiently, practice smart, and stay confident. --I hope every job seeker can find a job that satisfies them [Java Interview Guide – Auto-Renewing VIP Subscription Terms] — VIP Membership Benefits: Subscribing unlocks full access to all interview question types, including intermediate and advanced questions, real-world scenarios, questions from top tech companies, system design topics, web-related questions, and ongoing content updates. Enjoy unlimited access with no ads. — Subscription Plans & Pricing: Java Interview Guide – Monthly VIP Membership (Auto-Renewing): US$0.99/month (renews automatically every month), with a 7-day free trial. Java Interview Guide – Quarterly VIP Membership (Auto-Renewing): US$2.99/quarter (renews automatically every 3 months), with a 7-day free trial. Java Interview Guide – Semi-Annual VIP Membership (Auto-Renewing): US$5.99/half-year (renews automatically every 6 months), with a 7-day free trial. — Payment Terms: Payment will be charged to your Apple ID account upon confirmation of purchase. Your subscription will automatically renew and be charged within 24 hours prior to the end of the current billing period. You can manage and cancel your subscription in your Apple ID account settings. — Free Trial Policy: A 7-day free trial is available for first-time subscribers. If you cancel during the trial period, you won’t be charged. You may continue using the service until the end of the trial. — How to Cancel Auto-Renewal: To avoid automatic renewal, cancel at least 24 hours before the current period ends. Go to: Settings > Apple ID > Subscriptions and turn off auto-renew. — Privacy Policy & Terms of Use: Privacy Policy: https://blog.csdn.net/MyEclipse927/article/details/133379708?spm=1001.2014.3001.5501 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: DevTutor at every 2 weeks against Java Prep's every 6 weeks. 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. DevTutor sells 3 in-app purchases, starting at $1.99 per month and Java Prep sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
DevTutor ships an update every 2 weeks, Java Prep every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | DevTutor | Java Prep |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 16 — better |
| Further details — not scored | ||
| Size | 155 MB | 17 MB |
| Age rating | 4+ | 9+ |
| Developer | 楚江 王 | 嘉 邱 |
In-app purchases
DevTutor
- All Access Monthly$1.991 Month
- All Access Annually$9.991 Year
- All Access Lifetime$49.99
Java Prep
- Monthly Membership7 Days trial$0.991 Month
- Quarterly Membership7 Days trial$2.993 Months
- Semi-Annual Membership7 Days trial$5.996 Months









