Comparison

iSilo vs Dropbox

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

Head to head
About

iSilo

Read various document formats including iSilo, Palm Doc, and plain text. Access a vast library of content, organize your files, and customize viewing options for a personalized reading experience. Transfer documents easily via USB, Wi-Fi, or web download.

Highlights
  • Supports iSilo, Palm Doc, and plain text formats
  • Extensive document library and creation tools
  • Organize documents with categories and favorites
  • Customizable viewing options (font, colors, themes)
  • Autoscroll, full-screen, and orientation support
  • Text search, copy, and annotation
  • Multiple document transfer methods (USB, Wi-Fi, Web)
Features
Read full description

Document reader for viewing document files in iSilo, Palm Doc, and plain text format. Bonus: Get the complete edition of the CIA World Factbook for free, with layout optimized for viewing on your iPhone, iPod touch, or iPad using iSilo. In addition to full information for all the countries of the world, the complete edition contains appendixes, reference maps, field cross-reference links, rank order pages, country profiles for all fields, enlarged flag pages with descriptions, enlarged country maps, and more. Tens of thousands of documents, eBooks, reference works, non-fiction, fiction available for ready download through the iSilo library. Create your own documents too. Document list provides recently viewed list of documents, ability to categorize documents into single or multiple categories, marking of favorite folders for easy access, and file explorer access to entire document directory with document file management operations, such as copying/moving/deleting/renaming document files and creating/deleting/renaming folders. Document viewing options provide for font size and typeface selection, along with customizable color themes with selectable background and text colors. Autoscroll with adjustable speed, view documents in full screen, complete support for both portrait and landscape orientations and rotation. Jump history for easily navigating back and forth when following hyperlinks and jumping to different locations in the document. Documents open to last viewed location. Bookmarks. Document text search. Select a range of text to copy or annotate it with a comment and choice of color highlighting. Easily transfer documents to your device via USB, via Wi-Fi by connecting to iSilo's built-in file server from your computer, or via download from the Web. Configure the screen to perform actions when tapped. Assignable actions include scrolling, full screen mode, font sizing, among many others. The latest version adds the ability to view additional file types. Additional image file types include .jpg, .png, .gif, .tif, among others. Additional document file types include .pdf, .htm, Word (.doc, .docx), Excel (.xls, .xlsx), and PowerPoint (.ppt, .pptx). See the manual for more details on the additional file type support.

About

Dropbox

Securely store, sync, and share your files and photos across all your devices. Easily upload, access, and send documents, videos, and more from anywhere, even offline. Offers robust backup and recovery features for peace of mind.

Highlights
  • Automatic photo and video upload
  • Offline file access
  • Large file sharing via links
  • Document scanning to PDF
  • Version history and file recovery
  • Cross-device synchronization
Read full description

Dropbox lets you upload, save, and transfer photos and files to the cloud. Backup and sync your pictures, videos, documents, and other files to cloud storage and access them from any device, anywhere. With advanced sharing features, it’s easy to share and send photos or files to family, friends, and co-workers. Features: • Automatically upload videos and photos from your camera roll to cloud photo storage - all in the background - for easy video sharing and photo sharing. • Access any file in your account - even offline - and preview over 175 different file types with no special software required. • Easily send large files by copying and pasting a link you can give to anyone, even if they don’t have a Dropbox account. • Scan documents, receipts, IDs, photos, and more using your mobile device and transform them into high-quality PDFs, so you can view and send anywhere. • Sync folders on your PC or Mac to Dropbox with computer backup, and recover older versions or restore deleted files with version history and file recovery. Sign up now for your free Dropbox Plus trial. You’ll get 2 TB (2,000 GB) of storage space - that’s enough room to save files from all your linked devices. And with Dropbox Rewind, you can roll back any file, folder, or your entire account, up to 30 days. Before starting a trial or completing payment, you’ll see the plan price. This amount will be charged to your Apple ID account at confirmation of purchase and on renewal and will vary by plan and country. Dropbox subscriptions renew monthly or yearly, depending on your plan. Your account will be charged for renewal 24 hours before the end of your current billing period. To avoid auto-renewal, turn it off within at least 24 hours before your subscription renews. You can turn off auto-renewal anytime from your Apple ID account settings. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Dropbox is a secure cloud solutions leader trusted by Fortune 500 companies for their most sensitive data. Over 14 million paid users choose Dropbox because they know they can count on a company that’s also dedicated to their security and privacy—no matter what they do or where they are. Let Dropbox be your all-in-one file storage, file organizer, file transfer, and file sharing solution for all your devices. We’d love to hear from you! Join the Dropbox community: https://www.dropboxforum.com Terms of Service: https://www.dropbox.com/terms Privacy Policy: https://www.dropbox.com/privacy

Screenshots

iSilo4 screens
Dropbox4 screens

Verdict

The call

The clearest difference is price: Dropbox at Free against iSilo's $9.99. Dropbox also leads on rating (4.8 vs 3.8) and ratings volume (916K vs 50). iSilo's advantage is in-app purchases (none vs 11) and iOS requirement (8.0 vs 17.0). On review sentiment, update cadence, 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

Dropbox is free to download; iSilo costs $9.99 up front. Dropbox sells 9 in-app purchases, starting at $6.99 per month. iSilo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dropbox holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Dropbox has 916K ratings behind it against 50, so its average is the more settled of the two. Written reviews complicate that: 51% of iSilo's written reviews are positive against 48% of Dropbox's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

iSilo ships an update every 3 weeks, Dropbox fortnightly. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 4 level
iSilo versus Dropbox: the parameters behind the verdict, then further details
ParameteriSiloDropbox
Price$9.99Free — better
Rating3.8 (50 ratings)4.8 (916K ratings) — better
Positive reviews50.6% of reviews — better47.8% of reviews
Number of ratings50916K — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#5 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size13 MB226 MB
Age rating4+12+
DeveloperDC & Co.Dropbox, Inc.

Customer experience

iSilo

All ratings50 ratings
Positive68.0%
Neutral10.0%
Negative22.0%
Written reviews269 reviews
Positive50.6%
Neutral16.7%
Negative32.7%

Dropbox

All ratings916,236 ratings
Positive95.5%
Neutral1.7%
Negative2.9%
Written reviews2,145 reviews
Positive47.8%
Neutral6.3%
Negative45.8%

User reviews

iSilo

From 50 App Store ratings

What we love

  • 💻 Works well with Christian books
  • 📚 Excellent for reading documents with embedded hyperlinks
  • ⚡ Fast and smooth on many devices
  • 🙌 Hands down a life-saving app
  • 🏆 Basic but wonderful functionality

Room to improve

  • 🐛 Crashes upon opening
  • 🐛 Unable to download new material since 2017
  • 🐛 Crashes when trying to open code-protected file
  • 🐛 Scrolling issues and performance problems
  • 🤖 Outdated and abandoned by developers

Dropbox

From 916K App Store ratings

What we love

  • 🚀 Reliable cloud storage
  • 🔒 Secure file sharing
  • 📁 Convenient file management
  • 💻 Cross-device accessibility
  • 📸 Automatic photo backups

Room to improve

  • 🐛 Buggy app updates
  • 🔍 Confusing file navigation
  • ⚠️ Unreliable upload/sync
  • 💰 Expensive paid plans
  • 🔋 High battery drain

Bugs and requests

iSilo

Reported bugs

5 issues
  • Crashes when trying to open certain file formats
  • Displaying issues with Palm format (PDB) files
  • Inability to download files from Dropbox
  • Text going off-screen after recent updates
  • Bookmarks and annotations not syncing across devices

Requested features

5 requests
  • Add dark mode feature
  • Improve text highlighting and annotation capabilities
  • Implement cloud sync and cross-device support
  • Modernize the user interface
  • Add support for iOS Files app

Dropbox

Reported bugs

5 issues
  • Freezing on login screen
  • Duplicate file uploads
  • Incorrect file timestamps
  • Incompatibility with iOS updates
  • Disappearing recent files

Requested features

5 requests
  • Select all option for uploads
  • Background upload support
  • Integrated media player
  • Increased free storage
  • Flexible paid plan options

In-app purchases

None

iSilo

No in-app purchases

9 purchases

Dropbox

Subscriptions9
  • Dropbox Simple - Monthly1 Month trial$6.991 Month
  • Dropbox Plus - Monthly$11.991 Month
  • Dropbox Plus - Monthly1 Month trial$11.991 Month
Show 6 more
  • Dropbox Plus - Monthly14 Days trial$11.991 Month
  • Dropbox Professional - Monthly$19.991 Month
  • Dropbox Professional - Monthly1 Month trial$19.991 Month
  • Dropbox Family - Monthly1 Month trial$19.991 Month
  • Dropbox Plus - Annual2 variants$119.991 Year
  • Dropbox Plus - Annual1 Month trial$119.991 Year

Questions

Is iSilo free?
iSilo costs $9.99, with no in-app purchases.
Is Dropbox free?
Dropbox is free to download, with in-app purchases available.
Which has better reviews, iSilo or Dropbox?
Dropbox is rated higher. iSilo averages 3.8 out of 5 from 50 ratings, while Dropbox averages 4.8 from 916K ratings.
Do iSilo or Dropbox have ads?
Neither iSilo nor Dropbox shows ads.
Which is updated more often, iSilo or Dropbox?
iSilo ships an update every 3 weeks, and Dropbox fortnightly. Most recently, iSilo was updated on October 11, 2026 and Dropbox on October 14, 2026.

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