Comparison

Chat with PDF vs Lambda

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

Head to head
About

Chat with PDF

Features
Read full description

Upload Any Document. Get AI Summaries in Seconds. DoCMind AI turns your PDFs, Word files and photos into clear, structured summaries — instantly. Summarize, translate and share with one tap. WHY DoCMind AI? • Upload PDF, DOCX, JPG, PNG or take a photo • Get AI summaries with key points, keywords and action items • Translate summaries into 13+ languages • Share files directly from WhatsApp, Telegram or any app • Copy or share your summaries anywhere • OCR — extract text from images and scanned documents • Filter and search your document history • Beautiful dark mode SHARE FROM ANY APP Open a PDF in WhatsApp or Telegram, tap Share and choose DoCMind AI. Your document is summarized automatically — no extra steps. TRANSLATE YOUR SUMMARIES Got a summary in English but need it in French? Translate with one tap. Pro users can translate into any of 13+ supported languages. COPY & SHARE RESULTS Copy your summary to the clipboard or share it via Messages, Email, Slack or any app you like. BUILT FOR STUDENTS, PROFESSIONALS & RESEARCHERS Stop reading for hours. Upload → Summarize → Understand. Save time every day. Free plan: 2 documents per day. Upgrade to Pro for unlimited access. Terms of Use (EULA): https://docsmind.app/terms

About

Lambda

This application allows users to play supported games with others on the same local network. Create rooms and connect with nearby players for a direct, low-latency multiplayer experience. It functions as a multi-system game emulator.

Highlights
  • LAN multiplayer support
  • Create game rooms
  • Connect with nearby players
  • Low-latency gameplay
  • Multi-system emulation
Features
Read full description

Lambda is a brand-new game emulator with LAN multiplayer support. LAN multiplayer is one of Lambda's core features. You can create a room on the same local network (the same Wi-Fi environment), connect with nearby players, and play supported games together for a more direct, low-latency gameplay experience. Legal Disclaimer: Lambda is an independently developed emulator app and is not affiliated with, sponsored by, or endorsed by any game publisher, device manufacturer, or content owner. Compatibility descriptions are provided only to explain the app's supported environments. In-App Purchases: Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. After purchase, you can manage or cancel your subscription in your App Store account settings. Email: jiangdi0924@gmail.com Privacy Policy: https://planthunter.notion.site/58b7b83742254a92ac90aaa06f85398b Terms of Service: https://planthunter.notion.site/1d1282126c6e4a259f589f34fb6a46ee EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Chat with PDF4 screens
Lambda4 screens

Verdict

The call

The clearest difference is in-app purchases: Lambda at none against Chat with PDF's 4. Chat with PDF's advantage is update cadence (every 4 days vs every 5 weeks) and device support (3 vs 1). On price and ads 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. Chat with PDF sells 4 in-app purchases, starting at $4.99 per month. Lambda asks for nothing beyond the download.

UpkeepUpdate frequency

Chat with PDF ships an update every 4 days, Lambda every 5 weeks. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 5 level
Chat with PDF versus Lambda: the parameters behind the verdict, then further details
ParameterChat with PDFLambda
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size28 MB23 MB
Age rating4+4+
DeveloperFuad Hasanli笛 姜

In-app purchases

4 purchases

Chat with PDF

Subscriptions4
  • Pro$4.991 Month
  • Pro+ Monthly$9.991 Month
  • Pro$35.991 Year
Show 1 more
  • Pro+ Yearly$71.991 Year
None

Lambda

No in-app purchases

Questions

Is Chat with PDF free?
Chat with PDF is free to download, with in-app purchases available.
Is Lambda free?
Lambda is free to download, with no in-app purchases.
Do Chat with PDF or Lambda have ads?
Neither Chat with PDF nor Lambda shows ads.
Which is updated more often, Chat with PDF or Lambda?
Chat with PDF ships an update every 4 days, and Lambda every 5 weeks. Most recently, Chat with PDF was updated on October 25, 2026 and Lambda on October 15, 2026.

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