Comparison

Simple Pdf vs Keygram

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

Head to head
About

Simple Pdf

Easily view, manage, and create PDF files. This app allows you to open local PDFs, load them from the internet, and even scan documents with your camera. It also supports merging, splitting, converting PDFs to images, and adding signatures.

Highlights
  • View local PDF files
  • Scan documents and convert to PDF
  • Merge and split PDF files
  • Convert PDF to images
  • Add digital signatures
  • Organize and manage files
Features
Read full description

The ultimate all-in-one PDF Reader, Editor & Scanner. View, edit text, sign, read aloud, extract text with OCR, merge, split, compress, and password-protect your documents with blazing speed and complete offline privacy. Whether you are signing contracts, listening to eBooks, extracting text from scanned receipts, or organizing business reports, this is the only PDF toolkit you will ever need on your iPhone and iPad. ◆ KEY FEATURES ◆ ◆ FAST VIEWER & IN-DOCUMENT SEARCH ◆ • Lightning-fast rendering for PDFs of any size. • Real-time in-document text search with highlighted matches. • Smooth scrolling, jump-to-page navigation, and cover thumbnail previews. • Organize your library with list/grid views and one-tap Favorites. ◆ NATURAL READ ALOUD (TTS) ◆ • Listen to any PDF narrated with high-quality system voices. • Story-like pacing: respects commas, periods, headings, and paragraph transitions. • Voice Selector: Choose and preview your favorite voice and language in Settings. • Background audio session configured to play even when the physical silent switch is engaged. ◆ AI TEXT RECOGNITION (OCR) ◆ • Turn scanned documents and photo-based PDFs into clear, editable text. • High-accuracy optical character recognition powered by on-device intelligence. • Copy extracted text to your clipboard or export it instantly. ◆ EDIT PDF TEXT & WHITEOUT ◆ • Insert custom text directly onto any PDF page. • Customize text color, font size, and alignment. • Built-in Whiteout tool to redact, cover, or clean up unwanted text and marks. ◆ DIGITAL SIGNATURES MADE SIMPLE ◆ • Create and store multiple handwritten signatures. • Place, scale, and align your signature on contracts and agreements. • Save and export signed documents without leaving the app. ◆ WATERMARKS & PAGE NUMBERS ◆ • Add confidential, draft, or custom text watermarks with adjustable angle and opacity. • Insert customizable page numbers with multiple format options (1/N, Page X of Y) and flexible positioning. ◆ HD DOCUMENT SCANNER ◆ • Turn your device camera into a high-definition portable scanner. • Automatic edge detection, perspective correction, and contrast enhancement. • Digitize physical receipts, invoices, whiteboards, and IDs into multi-page PDFs. ◆ MERGE & SPLIT PDFS ◆ • Combine multiple PDF files into one clean, consolidated report. • Split large PDFs into individual documents or separate page ranges. ◆ POWERFUL IMAGE CONVERSION ◆ • Photos to PDF: Convert camera shots and gallery photos into crisp PDF files. • PDF to Images: Extract and export any document page directly to your Photos gallery. ◆ SMART PDF COMPRESSION ◆ • Shrink file sizes by up to 85% while preserving crystal-clear text quality. • Free up device storage and easily send files over Email or messaging apps. ◆ REORDER, ROTATE & MANAGE PAGES ◆ • Effortlessly reorder pages using intuitive drag-and-drop. • Rotate individual pages (90°, 180°, 270°) to correct orientation. • Delete unwanted pages before sharing your final document. ◆ FOLDERS & NATIVE FILES SYNC ◆ • Create custom folders to categorize your files. • Automatic sync: PDFs saved in the iOS Files app under "On My iPhone / Simple Pdf-reader" appear automatically. • AI Smart Rename: Analyze document contents and generate smart names instantly. ◆ PASSWORD ENCRYPTION & PRIVACY FIRST ◆ • Lock confidential PDFs with password encryption. • Remove passwords with authorized access. • 100% Offline: Your sensitive files stay private on your device and are never uploaded to remote servers. ◆ EASY FILE SHARING & PRINTING ◆ • Print documents directly via AirPrint. • Instant sharing via AirDrop, Messages, Mail, WhatsApp, and Files. ◆ TERMS OF USE & PRIVACY POLICY ◆ Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/simplepdfreader/privacy-policy

About

Keygram

Features
Read full description

Tired of your keyboard "correcting" your words into someone else's? Keygram finally types the way India actually texts. Every other keyboard treats Hindi, Tamil, Telugu and Kannada — typed in English letters — like one long typo. You write "yenu," "enna," "emi chestunnav," "kya kar rahe ho," and it fights you the whole way: autocorrecting, red-underlining, swapping in English words you never meant. Keygram is built different — it learns your language instead of overruling it. Keygram learns your words, right on your phone. The more you type, the sharper it gets at your slang, your spellings, your mix of languages — so you stop backspacing and start flowing. Why Keygram Types Hindi, Tamil, Telugu and Kannada in English letters — no switching keyboards, no fighting autocorrect Learns your words — your slang and spellings become the defaults, not "errors" Built for code-switching — mix Hindi and English in one sentence, no language toggle to hunt for Private by design — predictions and learning run entirely on your phone, nothing you type is ever sent anywhere Your vocabulary, backed up — sign in with Apple and it follows you to a new phone Stop letting your keyboard rewrite what you meant. Download Keygram and type like yourself again.

Screenshots

Simple Pdf4 screens
Keygram4 screens

Verdict

The call

The clearest difference is in-app purchases: Keygram at none against Simple Pdf's 3. Keygram also leads on ads (none vs shown) and update cadence (every 5 days vs every 4 months). Simple Pdf's advantage is device support (3 vs 1) and iOS requirement (15.5 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. Simple Pdf sells 3 in-app purchases, starting at $3.99 per month. Keygram asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Pdf ships an update every 4 months, Keygram every 5 days. Both last shipped on October 12, 2026.

Scorecard5 real differences · 5 level
Simple Pdf versus Keygram: the parameters behind the verdict, then further details
ParameterSimple PdfKeygram
PriceFreeFree
Rating3.2 (6 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings6 — better—
Update frequencyEvery 4 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.5 — better26.2
Further details — not scored
Size113 MB88 MB
Age rating4+4+
DeveloperAMARDEEP DHILLONVirat Singh

In-app purchases

3 purchases

Simple Pdf

Subscriptions2
  • Unlock all features$3.991 Month
  • Unlock feature yearly$29.991 Year
One-time1
  • Remove ads$2.99
None

Keygram

No in-app purchases

Questions

Is Simple Pdf free?
Simple Pdf is free to download, with in-app purchases available.
Is Keygram free?
Keygram is free to download, with no in-app purchases.
Do Simple Pdf or Keygram have ads?
Simple Pdf shows ads; Keygram does not.
Which is updated more often, Simple Pdf or Keygram?
Simple Pdf ships an update every 4 months, and Keygram every 5 days. Most recently, Simple Pdf was updated on October 12, 2026 and Keygram on October 12, 2026.

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