Comparison

Plain vs VT PDF Voice Reader

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

Head to head
About

Plain

This advanced AI-powered keyboard acts as your personal text assistant, offering features like grammar correction, translation, and tone adjustment. It helps you write, communicate, and generate text more effectively across all your applications.

Highlights
  • Grammar and spell check
  • Seamless translation
  • AI-powered answers
  • Tone adjustment
  • Text paraphrasing
  • Response generation
  • Text continuation
  • Synonym finder
Features
Read full description

Introducing Plain - AI Keyboard: Your Advanced Text Assistant! Why Plain? Plain isn't just another keyboard. It's your personal text assistant, powered by GPT-4, designed to elevate your writing experience across all apps. Whether you're chatting, working, or just exploring, Plain has got your back! FEATURES: - Grammar & Spell Check: Never second-guess your writing again! Plain automatically corrects any grammar or spelling mistakes in your text, ensuring you always put your best word forward. - Translate: Speak the global language! With Plain, your text is seamlessly translated to your desired language, with the source detected automatically. - Ask AI: Stuck on a question? Get instant answers on general knowledge topics. Just type, and let Plain provide the insights! - Tone Changer: Adapt your message to any situation. Specify a tone - be it friendly, professional, flirty, or any of our other options - and watch Plain craft your text accordingly. - Paraphrase: Say it differently, but keep the essence. Plain rephrases your text, maintaining the original tone, giving you a fresh perspective. - Reply: Never be at a loss for words. Enter a message, and Plain will generate a fitting response, making conversations smoother. - Continue Text: Extend your thoughts effortlessly. Provide a starting point, and let Plain continue your text in the same tone and context. - Find Synonyms: Expand your vocabulary! For any word you input, Plain offers a synonym, enriching your writing. Privacy & Security: Your privacy is our priority. Plain operates with transparency, ensuring your data remains secure and private. We value your trust! For any app-related queries, please send an email to info@mobiversite.com Privacy policy: https://www.mobiversite.com/privacypolicy Terms & Conditions: https://www.mobiversite.com/terms EULA: https://www.mobiversite.com/eula

About

VT PDF Voice Reader

Listen to PDF documents with text-to-speech and get AI-powered summaries. This app offers local processing for privacy and an optional AI discussion feature using your own API key.

Highlights
  • Text-to-speech for PDFs
  • AI-powered summaries
  • Local processing for privacy
  • Supports any PDF files
  • Customizable voice selection
  • Adjustable reading speed
Features
Read full description

This free-of-charge PDF reader with text-to-speech is created by team VelaTango. It comes in handy when you want to listen to a book while taking a walk or working in garden. The voice reading runs completely offline. The AI summary of PDF text and continual discussions with AI can help you better understand the content as well as getting a good picture of books and articles that you do not have time to read in detail. Privacy is fully protected with this app. PDF reading and text-to-speech are completely local and runs offline. The AI summary part requires internet connection. It sends selected PDF text directly to Google Gemini using your own API key. This app does not collect any user data. No email account needed. No login required. Please refer to instructions for details including how to download voices required by this app and how to apply for free Gemini API key if you are interested. Some notes on features: In principle, any PDF files can be loaded into this app. You can read by viewing. But when it comes to listening with text-to-speech (TTS), there are some limitations that you want to be aware of: 1) TTS part now works for PDFs with two-column text. Some text with math equations still face some challenges in separating two columns properly. 2) Voices are limited to 4 for English and 4 for Chinese to avoid the overwhelmingly long list. If you like the app and would like to add voices of other languages, please specify which language, name of the voice (like Ana), and whether the voice is enhanced or premium. Your PDF and Gemini API key files (a txt file with only the key information) are good to be kept in the same place like in the Files folder on your device. The buttons or icons on the control panel are quite intuitive. The reset icon returns voice reading back to the top of the page. When voice selection and speed selection are changed, new selection starts on the same line. I have enjoyed using this app and I wish the same for you.

Screenshots

Plain4 screens
VT PDF Voice Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: VT PDF Voice Reader at none against Plain's 3. VT PDF Voice Reader also leads on update cadence (every 2 months vs every 4 months). Plain's advantage is iOS requirement (15.0 vs 26.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Plain sells 3 in-app purchases, starting at $4.99 per 7 days. VT PDF Voice Reader asks for nothing beyond the download.

UpkeepUpdate frequency

Plain ships an update every 4 months, VT PDF Voice Reader every 2 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Plain versus VT PDF Voice Reader: the parameters behind the verdict, then further details
ParameterPlainVT PDF Voice Reader
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size26 MB2 MB
Age rating4+4+
DeveloperMOBIVERSITE YAZILIM BILISIM REKLAM VE DANISMANLIK HIZMETLERI SANAYI TICARET LIMITED STIWEN JIANG

Customer experience

Plain

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

VT PDF Voice Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Plain

Subscriptions3
  • 1 Week PRO$4.997 Days
  • 1 Month PRO$9.991 Month
  • 1 Year PRO$39.991 Year
None

VT PDF Voice Reader

No in-app purchases

Questions

Is Plain free?
Plain is free to download, with in-app purchases available.
Is VT PDF Voice Reader free?
VT PDF Voice Reader is free to download, with no in-app purchases.
Do Plain or VT PDF Voice Reader have ads?
Neither Plain nor VT PDF Voice Reader shows ads.
Which is updated more often, Plain or VT PDF Voice Reader?
Plain ships an update every 4 months, and VT PDF Voice Reader every 2 months. Most recently, Plain was updated on October 30, 2026 and VT PDF Voice Reader on October 24, 2026.

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