Comparison

Smart Clean vs PDF Flow

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

Head to head
About

Smart Clean

This app helps you manage your device's storage by cleaning up duplicate and similar files. It also offers features to compress videos and secure private photos and videos with password protection.

Highlights
  • Video compression
  • Secret photo folder
  • Duplicate and similar photo detection
  • Storage usage monitoring
  • Password protection for media
Features
Read full description

Smart Clean helps you manage storage with ease. Save space, protect your secrets, and keep your device clutter-free in just a few taps. Key Features: Video Compression – Reduce video size easily without losing quality. Secret Folder – Hide secret photos with password protection. Personal Space - Keep certain photos organized in one dedicated place. Smart Cleanup – Detect and delete duplicates, similar photos, screenshots, and more. Space Monitor – See storage usage and free up space instantly. Keep your device fast and clean. Download Smart Clean today! Subscribe today and make the most of all features! Subscription Pricing: - Auto-renewable weekly subscription at USD 7.99/week - Auto-renewable weekly subscription with 3-day trial at USD 7.99/week - Auto-renewable monthly subscription at USD 9.99/month - Auto-renewable yearly subscription at USD 39.99/year - Auto-renewable yearly subscription with 3-day trial at USD 39.99/year $39.99 one-time payment for lifetime VIP Terms of Use: https://www.superantslimited.com/terms.html Privacy Policy: https://www.superantslimited.com/privacy.html Contact us: support@superantslimited.com

About

PDF Flow

This app is an offline PDF tool for creating, viewing, editing, and organizing PDF documents directly on your device. Generate PDFs from photos or text, edit pages, compress files, and manage your local library without needing an account or uploading your data.

Highlights
  • Create PDFs from photos, text, or blank pages
  • Edit PDF pages, insert or remove pages
  • Compress PDFs with adjustable strength
  • Organize files with categories and favorites
  • Offline file management and editing
  • Import and export via Files app and share sheet
Features
Read full description

PDF Flow is your private offline PDF tool for viewing, creating, editing and storing PDFs on your phone. Generate PDFs from photos, text or blank pages, edit pages in a clear reader view, and save all files on your device. Create PDF files - Merge selected photos into one PDF - Type text and export clean PDF documents - Create blank PDFs with custom page numbers - Import PDFs and images from the Files app Read & edit PDF pages - Read documents continuously, navigate quickly with page thumbnails - Zoom in/out for clearer reading - Insert blank pages or add photo pages - Duplicate pages or remove unwanted ones - Modify single pages while keeping your original file intact Compress & share PDFs - Select compression strength to fit your needs - Preview estimated file size before compression - Save a copy of your original document if needed - Export or share PDFs through iOS native share sheet Manage your local file library - Sort files by name, date or file size - Use categories and favorites to filter your documents - Search filenames and view recent searches - Restore deleted files or erase them forever - Clear temporary cache and thumbnails without deleting PDFs All PDF editing, reading, compression and file management happens directly on your iPhone.  PDF Flow needs no account and will never upload your files to outside servers. Your documents only leave the app when you actively share them via iOS share functions. Feature performance varies based on file content, format, device hardware and iOS system version.

Screenshots

Smart Clean4 screens
PDF Flow4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Flow at none against Smart Clean's 6. Smart Clean's advantage is ads (none vs shown) and rating (4.1 vs 3.7). On price, update cadence, device support and iOS requirement 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. Smart Clean sells 6 in-app purchases, starting at $7.99 per 7 days. PDF Flow asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Smart Clean holds the better App Store score, 4.1 against 3.7. That said, the two scores are not equally well evidenced: Smart Clean has 31 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Smart Clean ships an update monthly, PDF Flow every 4 weeks. Both last shipped on November 5, 2026.

Scorecard5 real differences · 5 level
Smart Clean versus PDF Flow: the parameters behind the verdict, then further details
ParameterSmart CleanPDF Flow
PriceFreeFree
Rating4.1 (31 ratings) — better3.7 (3 ratings)
Positive reviews—0.0% of reviews
Number of ratings31 — better3
Update frequencyMonthlyEvery 4 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size51 MB77 MB
Age rating17+4+
DeveloperSuper ScannerFuzhou Qingyue Network Technology Co., Ltd.

Customer experience

Smart Clean

All ratings30 ratings
Positive73.3%
Neutral13.3%
Negative13.3%

PDF Flow

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

6 purchases

Smart Clean

Subscriptions5
  • Weekly VIP$7.997 Days
  • Weekly VIP - 3 Days Free3 Days trial$8.997 Days
  • Monthly VIP$9.991 Month
Show 2 more
  • Yearly VIP - 3 Days Free3 Days trial$39.991 Year
  • Yearly VIP$39.991 Year
One-time1
  • Lifetime VIP$39.99
None

PDF Flow

No in-app purchases

Questions

Is Smart Clean free?
Smart Clean is free to download, with in-app purchases available.
Is PDF Flow free?
PDF Flow is free to download, with no in-app purchases.
Which has better reviews, Smart Clean or PDF Flow?
Smart Clean is rated higher. Smart Clean averages 4.1 out of 5 from 31 ratings, while PDF Flow averages 3.7 from 3 ratings.
Do Smart Clean or PDF Flow have ads?
PDF Flow shows ads; Smart Clean does not.
Which is updated more often, Smart Clean or PDF Flow?
Smart Clean ships an update monthly, and PDF Flow every 4 weeks. Most recently, Smart Clean was updated on November 5, 2026 and PDF Flow on November 5, 2026.

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