Comparison

PDF Converter vs Langulu

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

Head to head
About

PDF Converter

Easily convert photos and various document types into high-quality PDF files. This tool also allows you to split existing PDFs or merge multiple PDF documents into a single file.

Highlights
  • Convert photos to PDF
  • Import and merge various file formats (Word, Excel, PPT) to PDF
  • Split PDF files
  • Merge multiple PDF files
  • High-quality PDF creation
Features
Read full description

This professional PDF app helps you handle documents quickly and efficiently. With a clean interface and powerful features, managing PDFs has never been easier. FEATURES - PDF Converter: Convert images and documents into high-quality PDF files. - Split and Merge PDF: Easily split large PDFs or merge multiple files into one organized document. - Compress PDF: Reduce file size while maintaining quality, making sharing and storage easier. - Protect PDF: Secure your files with password protection to keep your information safe. - Manage PDF: Organize, rename, and manage your PDF files with ease. - Scan PDF: Scan documents anytime, anywhere and instantly turn them into PDFs. SUBSCRIPTION - Subscriptions are available on a weekly, monthly, or yearly basis. Your subscription will automatically renew based on the selected plan. - Payment will be charged to your Apple ID account upon confirmation of purchase. - Your account will be charged for renewal within 24 hours prior to the end of the current period. - Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. - You can manage or cancel your subscription in your App Store account settings: https://support.apple.com/en-us/HT202039 Privacy Policy: https://best.kirable.com/links/PDFConverter/PrivacyPolicy Terms of Service: https://best.kirable.com/links/PDFConverter/UserAgreement

About

Langulu

Features
Read full description

Langulu is the fastest way to translate between two languages. Pick your language pair once — Langulu automatically detects which language you're typing and translates into the other. Both directions, no switching. FEATURES • Smart auto-detection — type in either language, get the other instantly • Sounds human — natural, casual phrasing a native speaker would actually use, not stiff word-for-word output • Voice input — tap the mic and just speak; Langulu transcribes and translates • Tap to copy — tap any result and it's on your clipboard • Clean, distraction-free design built for speed Langulu uses your own OpenAI API key (entered once in Settings and stored securely in your device's Keychain). There are no accounts and no tracking.

Screenshots

PDF Converter4 screens
Langulu3 screens

Verdict

The call

The clearest difference is in-app purchases: Langulu at none against PDF Converter's 2. Langulu also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). PDF Converter's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.2). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDF Converter sells 2 in-app purchases, starting at $2.99 per month. Langulu asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Converter ships an update every 2 months, Langulu every 3 weeks. The most recent releases landed on October 15, 2026 and September 25, 2026 respectively.

Scorecard5 real differences · 5 level
PDF Converter versus Langulu: the parameters behind the verdict, then further details
ParameterPDF ConverterLangulu
PriceFreeFree
Rating4.8 (531 ratings) — better—
Positive reviews76.9% of reviews—
Number of ratings531 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better26.2
Further details — not scored
Size39 MB1 MB
Age rating4+4+
Developer晓珍 胡Ali Dehkharghani

Bugs and requests

PDF Converter

Reported bugs

2 issues
  • App does not convert files as advertised
  • Invasive advertising slows down operations

Requested features

1 request
  • Open PDF page

Langulu

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

PDF Converter

Subscriptions2
  • Monthly Plan$2.991 Month
  • Annual Plan$9.991 Year
None

Langulu

No in-app purchases

Questions

Is PDF Converter free?
PDF Converter is free to download, with in-app purchases available.
Is Langulu free?
Langulu is free to download, with no in-app purchases.
Do PDF Converter or Langulu have ads?
PDF Converter shows ads; Langulu does not.
Which is updated more often, PDF Converter or Langulu?
PDF Converter ships an update every 2 months, and Langulu every 3 weeks. Most recently, PDF Converter was updated on October 15, 2026 and Langulu on September 25, 2026.

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