Comparison

ALPDF vs Kept

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

Head to head
About

ALPDF

Edit, view, and convert PDF files on your mobile device with a comprehensive suite of tools. Features include text editing, merging, splitting, and AI-powered summarization and chat for quick document analysis. Secure your files with password protection and watermarks.

Highlights
  • PDF viewer and editor
  • Merge and split PDFs
  • Convert between PDF and other formats
  • AI PDF summarizer and chat
  • Password protection and watermarks
  • OneDrive cloud integration
Features
Read full description

ALPDF makes it easy to view, edit, convert, scan, compress, sign, and manage PDF documents on your iPhone or iPad. Get free PDF tools for editing, conversion, scanning, AI summaries, and more. · Essential PDF tools: View, edit, convert, scan, compress, split, merge, sign, lock, and organize documents · AI & cloud features: Summarize and chat with PDFs using AI, and access files through OneDrive · Apple device support: iPhone, iPad, and compatible Mac devices - ● Key Features [PDF Editing - View, Edit, Merge, and Split] Use ALPDF as a free PDF editor on iPhone or iPad. · PDF viewer: Quickly open and read PDF files on iPhone and iPad · Edit PDFs: Edit text and add notes, annotations, callouts, lines, links, stamps, underlines, and multimedia · Merge PDFs: Combine multiple documents into a single PDF · Split PDFs: Separate, delete, or extract selected pages into individual PDF files · Create PDFs: Create new documents with custom page size, color, and page count · Rotate pages: Rotate PDF pages to your preferred orientation · Compress PDFs: Reduce large PDF file sizes for easier sharing · Scan documents: Use your iPhone or iPad camera to scan paper documents and save them as PDF or image files · Add page numbers: Customize the position, size, and font of page numbers [PDF Conversion - Word, Excel, PPT, Images, and More] Use the free PDF converter for PDFs, Office documents, and images. · PDF to JPG, Word, PPT, Excel, and TXT · JPG and PNG to PDF · Word, PPT, and Excel to PDF · Convert photos into PDF documents · HWP viewing and HWP to PDF conversion supported [AI PDF - Summary and Chat] Understand long reports, research papers, and foreign-language documents faster with AI. · AI PDF Summary: Get the key points from long PDF documents · AI PDF Chat: Ask questions and get answers based on the content of your document ※ Subscribe to an ALTools AI plan on the official ALTools website for higher AI usage limits. [Cloud Integration - OneDrive] Connect your OneDrive account to access and edit documents stored in the cloud. · Open and edit OneDrive documents directly in ALPDF · Connect two or more OneDrive accounts at the same time [PDF Security - Lock, Watermark, and eSign] Keep important documents protected and organized. · Password protection: Add or remove passwords from PDF files · Watermark: Add text or images to help protect document ownership · eSign: Add your signature to PDF documents for convenient electronic signing · Organize pages: Reorder, delete, or add PDF pages - ● Recommended for Professionals who need to edit documents on the go → Review and edit contracts, reports, and other PDF files directly on iPhone or iPad Anyone looking for a free PDF app for everyday document tasks → View, edit, convert, scan, compress, merge, split, and sign PDFs in one place Anyone who needs to scan paper documents → Use your iPhone or iPad camera to scan documents and save them as PDFs Students working with research papers and study materials → Summarize PDFs with AI, add annotations, and convert documents for easier study Anyone managing forms, tax documents, or important files → Merge, split, compress, password-protect, and eSign documents in one place Anyone who needs to convert between PDF and other file formats → Convert PDFs to Word, Excel, PPT, JPG, and TXT, or create PDFs from Office files and images Anyone who works across Apple devices → View and manage PDF documents on iPhone and iPad, with availability on compatible Mac devices - [App Permissions] Optional Permissions · Camera: Add photos while editing PDFs · Microphone: Add voice notes to PDFs · Tracking: Provide personalized ads and offers ※ You can use the app without granting optional permissions, but features that require them may be limited until permission is granted. - [Customer Support] Email: altools@estsoft.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Kept

Features
Read full description

Kept — Turn your daily routines into lasting memories. Track recurring routines and daily to-dos in one place. Attach a small photo when you complete a routine, and watch your patterns and streaks reveal themselves over time. At the end of each month, turn your stickers into a beautiful collage you can save and keep. All your data stays on your device — nothing is sent to any server.

Screenshots

ALPDF4 screens
Kept4 screens

Verdict

The call

The clearest difference is in-app purchases: Kept at none against ALPDF's 2. Kept also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 weeks). On price 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. ALPDF sells 2 in-app purchases, starting at $1.49 per month. Kept asks for nothing beyond the download.

UpkeepUpdate frequency

ALPDF ships an update every 2 weeks, Kept every 5 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
ALPDF versus Kept: the parameters behind the verdict, then further details
ParameterALPDFKept
PriceFreeFree
Rating4.8 (8 ratings) — better—
Positive reviews47.8% of reviews—
Number of ratings8 — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size372 MB33 MB
Age rating4+4+
DeveloperESTsoft corp.WOOJUNG JO

In-app purchases

2 purchases

ALPDF

Subscriptions2
  • Monthly Subscription$1.491 Month
  • Annual Subscription$14.991 Year
None

Kept

No in-app purchases

Questions

Is ALPDF free?
ALPDF is free to download, with in-app purchases available.
Is Kept free?
Kept is free to download, with no in-app purchases.
Do ALPDF or Kept have ads?
ALPDF shows ads; Kept does not.
Which is updated more often, ALPDF or Kept?
ALPDF ships an update every 2 weeks, and Kept every 5 days. Most recently, ALPDF was updated on November 8, 2026 and Kept on October 31, 2026.

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