Codebook vs FieldStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Codebook
This app offers AI-powered coding assistance, lessons, and a built-in code editor. It helps users learn, write, run, and test code, build portfolios, and earn certifications. Access to advanced AI models is provided.
- AI-powered coding assistance
- Instructor-led coding lessons
- Built-in code editor
- Code execution and testing
- Certification and rewards
- Personalized learning plans
- Developer portfolio builder
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Unlock the Future of Coding with Codebook – The Most Affordable AI-Powered Coding Companion! Supercharge your coding journey with Codebook, the only app that gives you completely free access to the latest and greatest AI models – GPT-3 and GPT-4. Experience cutting-edge assistance, including exclusive features like sending images to GPT-3, which no other app offers! AI-Powered Coding Assistance: Get instant answers to all your coding questions with Codebook's powerful AI, ready to generate detailed, formatted code snippets and solve even the toughest bugs in seconds. Whether you're a beginner or an expert, Codebook adapts to your needs, making coding effortless and efficient. Instructor-Led Coding Lessons: Watch in-app coding lessons taught by an experienced instructor. Open a 24/7 chat to ask questions anytime and get the help you need — instantly. Run Code Instantly: Write, run, and test code in any language right within the app. With Codebook's built-in code editor, you can seamlessly switch between learning, coding, and executing, making it easier than ever to master any programming language. Earn Certifications and Rewards: Prove your skills! Complete challenges, earn rewards, and get certified by passing language-specific exams. Codebook’s personalized learning modules guide you through, so you can confidently ace the exams and showcase your certifications. Personalized Learning Plans: Take control of your learning path with tailor-made programs for any language. Codebook’s adaptive plans ensure you’re always building on your strengths and tackling new challenges, keeping your skills sharp and future-ready. Developer Portfolio Made Easy: Build a professional developer portfolio, hosted online, directly from the app. Perfect for resumes and job applications, your portfolio showcases your progress and achievements, helping you stand out in the tech world. Join a Community of Thriving Coders: Thousands of coders are already benefiting from Codebook's innovative features. Join the community and explore the new era of coding with AI as your guide! Privacy You Can Trust: We prioritize your security with Apple's privacy standards, ensuring that your data stays protected while you focus on leveling up your skills. Download Codebook today and discover how affordable, advanced, and enjoyable learning to code can be! Embrace the future of coding with AI at your side – for free. Our subscription options include the following weekly subscriptions. The subscriptions automatically renew unless canceled 24 hours before the end of the current period. - Codebook Professional - Length of Subscription: 1 week - Price: $4.99 per week - Gives access to all premium features - Codebook Professional Without Ads - Length of Subscription: 1 week - Price: $7.99 per week - Gives access to all premium features without Ads - Codebook Remove Ads - Length of Subscription: 1 week - Price: $2.99 per week - Fully removes ads from Codebook - Privacy Policy: https://qwertycode.org/legal/Codebook-Privacy-Policy.html - Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FieldStack
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FieldStack turns large construction plan sets into a focused workspace built for the person holding the phone. Open the complete PDF, pull the sheets you need into one zoomable board, and add checks and notes without changing the original drawings. INFINITE REFERENCE CANVAS • Bring plan pages, images, PDFs, text notes, and editable sketches into one smooth visual workspace. • Arrange and group job context freely, then tap a plan page to reopen the original blueprint. • Pan and zoom around the canvas without changing source documents. BUILD A WORKING BOARD • Select one sheet or a group of related sheets from the full reader. • Arrange the board in one, two, or three columns. • Move between sheets while keeping the larger plan context in view. FIND AND RECORD FIELD CONTEXT • Search rooms, doors, labels, and other plan text. • Add Check or Note items at plan locations. • Track field-facing progress as Open, In Progress, Blocked, or Done. • Review the same saved entries from Board or Today. KEEP THE SOURCE CLEAN FieldStack stores boards, checks, notes, and Reference Boards as a separate private layer. Imported source PDFs are not overwritten or flattened by ordinary field work. The reviewed primary FieldStack interface supports English, French, Spanish, and Brazilian Portuguese. Existing customers choose whether to keep English or follow their iPhone language; new installs use the reviewed iPhone language automatically. FieldStack is designed as a personal field tool. It does not require an account, realtime team workspace, or subscription. Optional consumable tips support continued development and unlock nothing. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://unshackledpursuit.com/fieldstack#privacy
Screenshots
Verdict
The clearest difference is in-app purchases: FieldStack at none against Codebook's 21. FieldStack also leads on ads (none vs shown). Codebook's advantage is update cadence (every 3 days vs every 8 days) and device support (3 vs 1). On price 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. Codebook sells 20 in-app purchases, starting at $2.99 per 7 days. FieldStack asks for nothing beyond the download.
Codebook ships an update every 3 days, FieldStack every 8 days. The most recent releases landed on September 27, 2026 and September 16, 2026 respectively.
| Parameter | Codebook | FieldStack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (31 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 31 — better | — |
| Update frequency | Every 3 days — better | Every 8 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 136 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Noah Clark | Dylan Russell |
In-app purchases
Codebook
- Codebook Remove Ads$2.997 Days
- Codebook Professional$4.997 Days
- Codebook Pro Without Ads$7.997 Days
- Codebook Challenge Answer$1.99
- Codebook Widgets 1 Month$2.99
- Codebook Challenge Refresh$2.99
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- 25 Codebook Tokens$2.99
- GPT 4 Access$2.99
- 50 Codebook Tokens$3.99
- Codebook Certification$3.99
- Codebook Tokens$5.99
- 50 Codebook Tokens2 variants$5.99
- GPT4-Codebook$5.99
- Codebook Remove Ads$5.99
- 100 Codebook Tokens$8.99
- Codebook Remove Ads$9.99
- GPT-4 Access for Codebook$9.99
- GPT-4 1 Month Access$12.99
- Codebook Remove Ads$12.99
- 1 Month Idea Hub Access$14.99
FieldStack
No in-app purchases









