Langboard vs Write on PDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Langboard
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Learn languages while you type. Turn everyday typing into effortless language learning. As you type, the keyboard shows a natural translation of your sentence along with phrase-by-phrase meanings, helping you discover how the words and expressions you already use are said in another language. Switch between supported languages anytime and learn through real conversations, messages, notes, and searches — without opening a separate translation app. Need to communicate in another language? Simply tap the translation to replace what you've typed with the translated text, ready to send. Key Features Real-Time Sentence Translation See a natural translation while you type, directly above the keyboard. Phrase-by-Phrase Learning Understand how individual words and phrases are expressed in the language you're learning. Switch Learning Languages Anytime Choose the language you want to learn and translate into, including English, Japanese, Korean, and more supported languages. Replace Your Text in One Tap Turn what you've typed into the translated language instantly — useful for messages, email, social apps, and search. Learn From What You Actually Say Instead of studying random textbook sentences, learn from the things you naturally type every day. No Copying and Pasting Translation happens directly inside the keyboard, so there's no need to constantly switch between apps. You already type every day. Why not learn a language at the same time? Type. Translate. Learn. Terms of Service: https://langboard.aiyuchat.com/terms.html Privacy Policy:https://langboard.aiyuchat.com/privacy.html
Write on PDF
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# Write on PDF Write, type, draw, highlight, sign, and add notes directly to your PDF documents. Write on PDF gives you the tools you need to quickly mark up PDFs without complicated editing software. Open your document, make your changes, and save your updated PDF. ## WRITE & ADD TEXT Add text anywhere on your PDF. Perfect for filling documents, adding answers, making corrections, or adding extra information. ## DRAW & ANNOTATE Use drawing and annotation tools to mark up documents naturally. Circle important information, add handwritten notes, or draw directly on the page. ## FILL PDF FORMS Complete PDF documents and forms from your iPhone or iPad. Add the information you need without printing the document first. ## SIGN DOCUMENTS Add your signature directly to PDF documents for a fast and convenient way to complete forms and paperwork. ## HIGHLIGHT IMPORTANT TEXT Highlight important sections of your documents so you can quickly find the information that matters. ## ADD NOTES Add notes and annotations while reading, reviewing, or studying PDF documents. ## MADE FOR EVERYDAY PDF EDITING Write on PDF is useful for: * Filling PDF forms * Signing documents * Adding text to PDFs * Annotating documents * Highlighting important information * Writing notes * Drawing on PDFs * Reviewing documents * Completing worksheets * Marking up study materials Whether you're working with forms, notes, school documents, business files, or personal PDFs, Write on PDF makes it easy to make changes directly from your device. Open your PDF and start writing. Subscription Details: • Title: Savory All Access • Length: 1 year • Price: $39.99 per year and $7.99 per month (auto-renews) • Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://docs.google.com/document/d/1b2FQZ_HK2I_6ZBJhiaJw_Vii5aKW9D4dYjGfP9C8efU/edit?usp=sharing
Screenshots
Verdict
The clearest difference is ads: Write on PDF at none against Langboard's shown. On price, in-app purchases, device support 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
Both are free to download. Langboard sells 3 in-app purchases, starting at $0.99 per month and Write on PDF sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | Langboard | Write on PDF |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | 晓冬 黄 | Fenuku Kekeli |
In-app purchases
Langboard
- Monthly7 Days trial$0.991 Month
- Yearly7 Days trial$4.991 Year
- Lifetime plan$9.99
Write on PDF
- All Access for a week$4.997 Days
- All Access for a year$39.991 Year
- All Access$99.99









