Comparison

Duo Cleaner vs Sentinel Origin

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

Head to head
About

Duo Cleaner

This AI-powered app helps you quickly find and remove duplicate and similar photos, screenshots, and other clutter from your iPhone's photo library. It operates entirely on-device, ensuring your privacy and working offline to free up valuable storage space.

Highlights
  • AI-powered duplicate photo detection
  • Similar photo grouping and comparison
  • Screenshot detection and removal
  • On-device processing for privacy
  • Offline functionality
  • Storage saving dashboard
Features
Read full description

Free up space with Duo, a phone cleaner for your Photos library. Find large photos, unwanted videos, screenshots, and similar shots, then choose what to remove. Duo Cleaner: Clean Up Storage brings an AI cleaner and photo management tools together in one app. Review large files, compare similar images, or swipe through your library by month. Use the storage cleaner to clean up iPhone storage by removing media you no longer need. Duo groups images automatically, helping you review your library without searching for every photo manually. 1. WHAT DUO CLEANS: Clean Phone Storage: Large Photos & Videos Find large photos and videos taking up space in your Photos library. Review them together and select the files you no longer need, from old recordings to oversized images. The phone cleaner keeps the decision in your hands. Swipe Cleaner: Keep or Clean in One Motion Browse your Photos library month by month. Swipe right to keep, swipe left to mark a photo for removal. Review your selection before confirming deletion. Duplicate Photos Cleaner: Compare Similar Shots Duo uses an AI cleaner to scan your Photos library and group near-duplicate photos side by side. Compare similar shots, pick your favorites, and select the rest for removal. The duplicate photos cleaner helps you review each group before deleting anything. Screenshot Cleaner: Review Saved Screenshots Old receipts, memes, and random notes can accumulate over time. Duo detects and pre-selects screenshots so you can check the selection and remove those you no longer need. Social & Messaging App Images Photos saved from messaging and social apps can add clutter to your Photos library. Duo groups supported saved images separately, helping you review unwanted downloads alongside your other photos. Video Cleaner: Review Your Largest Files Duo sorts videos from largest to smallest so you can review the biggest files first. Preview each video before deciding whether to remove it. Storage Cleaner Dashboard: Follow Your Progress Track items removed, categories scanned, and the size of media selected for deletion. See your progress as you clean up iPhone storage, with a summary of each session. 2. PRIVATE & ON-DEVICE Duo processes your Photos library on your device, without uploading your photos to its servers. No account or sign-up is required. Use the AI cleaner offline to organize media available on your device. WHY CHOOSE DUO - Find large photos and videos in one place - Compare similar shots with the duplicate photos cleaner - Review screenshots and saved messaging app images - Swipe through photos by month - Check your selection before confirming deletion - View your cleaning progress in the dashboard DELETING & RECOVERING PHOTOS Deleted photos and videos move to Recently Deleted in the Photos app, where they normally remain for 30 days. You can recover them or permanently delete them there. To complete removal and reclaim space sooner, empty Recently Deleted after checking that you no longer need those items. Available storage may vary with iCloud Photos settings. Download Duo, your phone cleaner with photo and video tools. Use the storage cleaner to organize your Photos library and make room for new content. Privacy Policy: https://sites.google.com/view/unclutterprivacypolicy/home Terms of Use: https://sites.google.com/view/uncluttertermsofuse/home

About

Sentinel Origin

Features
Read full description

Sentinel Origin gives your valuable items a proof of ownership record you can show to a buyer. Register a phone, laptop, tablet, camera, drone, console, power tool, trade equipment or bike using its serial number or IMEI. Add photos, a description and a receipt if you have one. Every seller verifies their identity with a government issued photo ID and a live selfie, so the record carries real weight. Once registered, your item has its own logbook page. Share the public link in your listing or send it straight to a buyer. They can see the item details, the ownership history and that the seller is identity verified, before any money changes hands. When you sell, ownership transfers cleanly. Enter the buyer's email, they accept the transfer, and the record moves to them with the history intact. No paperwork, no disputes about who owned what. Why it matters. Second hand buyers are cautious, and rightly so. Tools and equipment get stolen and resold constantly. A verified ownership record removes the doubt, helps you sell faster, and gives the buyer confidence they are dealing with an identity verified seller. Features Register items by serial number or IMEI Identity verified sellers Public logbook page for every item Clean ownership transfer to a buyer Full ownership history retained Trusted contacts for arranging a safe meeting Photos stripped of location data automatically Pricing Registration is priced by the declared value of the item. Under £500 is £4.99, £500 to £1,000 is £8.99, and over £1,000 is £16.99. An optional Annual Plan is available at £39.99 a year for unlimited registrations and free transfers. Sentinel Origin is a record keeping service. It is not a stolen goods register and it is not a safety or security service. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Duo Cleaner4 screens
Sentinel Origin4 screens

Verdict

The call

The clearest difference is ads: Sentinel Origin at none against Duo Cleaner's shown. Sentinel Origin also leads on update cadence (every 2 days vs weekly) and iOS requirement (15.6 vs 17.0). On price, in-app purchases 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. Duo Cleaner sells 6 in-app purchases, starting at $1.99 per 7 days and Sentinel Origin sells 4 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Duo Cleaner ships an update weekly, Sentinel Origin every 2 days. Both last shipped on November 5, 2026.

Scorecard3 real differences · 7 level
Duo Cleaner versus Sentinel Origin: the parameters behind the verdict, then further details
ParameterDuo CleanerSentinel Origin
PriceFreeFree
Rating4.5 (32 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings32 — better—
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size56 MB40 MB
Age rating4+4+
DeveloperTP Technology Service Company LimitedValiexa LLC

In-app purchases

6 purchases

Duo Cleaner

Subscriptions6
  • Weekly3 Days trial$1.997 Days
  • Weekly3 Days trial$3.997 Days
  • Weekly3 Days trial$6.997 Days
Show 3 more
  • Annual$19.991 Year
  • Annual$29.991 Year
  • Annual$34.991 Year
4 purchases

Sentinel Origin

Subscriptions1
  • Annual Subscription$39.991 Year
One-time3
  • Items Under 500$4.99
  • Item Under 1000$9.99
  • Item Above 1000$17.99

Questions

Is Duo Cleaner free?
Duo Cleaner is free to download, with in-app purchases available.
Is Sentinel Origin free?
Sentinel Origin is free to download, with in-app purchases available.
Do Duo Cleaner or Sentinel Origin have ads?
Duo Cleaner shows ads; Sentinel Origin does not.
Which is updated more often, Duo Cleaner or Sentinel Origin?
Duo Cleaner ships an update weekly, and Sentinel Origin every 2 days. Most recently, Duo Cleaner was updated on November 5, 2026 and Sentinel Origin on November 5, 2026.

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