Comparison

Nix Toolkit vs Pop Clean

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

Head to head
About

Nix Toolkit

This app connects to Nix Sensor devices to provide color scanning and analysis. It offers features like single scans, access to premium color databases, and custom library creation. Users can view digital color values and spectral curves, and match scanned colors to extensive libraries.

Highlights
  • Single scan color analysis
  • Access to premium color databases
  • Create and share custom color libraries
  • Multipoint average scanning
  • Nix Paints feature
  • Nix Quality Control feature
Read full description

The Nix Toolkit is the new all-in-one companion app for our Nix Sensor device line-up. It’s compatible with all Nix Mini, Nix Pro, Nix QC, and Nix Spectro devices. Functions in the app will be turned on and off depending on which device you have connected. Functions include: 1. “Single scan” (available for all devices) 2. “Premium databases” (available for all devices) 3. “Create and share custom library (Compatible with Nix Pro, Spectro and QC devices only) 4. “Multipoint average scanning for all tools” 5. "Nix Paints feature" 6. "Nix Quality Control feature" The “Single scan” function displays digital values (CIELAB, HEX, and RGB) and Spectral curve on swipe (Spectro device only) when you scan a sample with your Nix Color Sensor. Premium databases offer paid subscriptions to world-class color libraries (including Pantone, RAL, and NCS). Once subscribed you can browse the entire library, and scan and match to the closest color. The Nix Toolkit app lets you take control of how you perceive color. Select from dark or light mode, or use your own system settings. If you have any questions, please don’t hesitate to contact us. We’d love to help with whatever questions or issues you have. Please note that a free account is required to use the app (you will be prompted to create one when you first open the app). A Nix device (Mini, Pro, QC, or Spectro) is required to unlock app functions. Learn more about the Nix Sensor line-up at www.nixsensor.com. If you find any bugs please contact us directly at info@nixsensor.com and our team will attend to them quickly. Nix®, Nix Pro™, and Nix Mini™ are trademarks of Nix Sensor Ltd. All other trademarks used herein are simply references to trademarks owned by others and are not intended as trademark use. Terms of use: https://www.nixsensor.com/legal/

About

Pop Clean

Features
Read full description

Swipe left to bin, right to keep. Pop Clean turns clearing out your iPhone into something you can actually finish — and shows you exactly how much storage you got back. Photos, videos, files, Gmail and contacts in one place. Nothing is deleted until you say so. Free trial included. SWIPE MODE One photo at a time, like a deck of cards. Swipe right to keep, left to send it to the bin. Undo any swipe, restart the deck whenever you want, and build a daily streak as you go. SMART PHOTO CLEANUP Pop Clean sorts your photo library into the categories actually worth reviewing: - Duplicate photos — matched on visual fingerprint, not file name or date - Similar shots — bursts and near-copies, grouped so you keep one and clear the rest - Screenshots, receipts and documents - Blurry and low-quality photos - The largest videos in your library VIDEOS: FIND, PREVIEW, COMPRESS Sort videos by size and preview before you decide. Keep the ones that matter and compress them instead — same clip, a fraction of the storage — one at a time or in batches. FILES Junk files: empty files, incomplete downloads, editor lock files and stale backups. Duplicate files, matched by content rather than name. Everything else browsable by type — documents, PDFs, images, videos and audio. GMAIL AND CONTACTS Clear promotional and social mail in bulk, and unsubscribe from the senders you never open. Merge duplicate contacts and contacts sharing a phone number, one decision at a time. POP AI — OPTIONAL, ON DEVICE Turn on on-device learning and Pop Clean ranks your cleanup by what you actually keep, so the things you'd have deleted anyway come first. Off by default, runs entirely on your iPhone, and you can switch it off again at any time. SECRET SPACE Move sensitive photos and videos into a separate encrypted space behind a PIN or Face ID. Requires a Pop Clean account. NOTHING IS DELETED UNTIL YOU CONFIRM Everything you clear goes to a bin first. Review it, restore anything you changed your mind about, and only then confirm. Pop Clean never deletes anything on its own. PRIVACY-FIRST BY DESIGN Some features need permission to access Photos, Files, Gmail or Contacts, and that access is used only for the feature you chose to use. Pop Clean does not send your personal photos, videos, files or contacts to third-party AI providers. Free up storage you didn't know you had — without handing your library to anyone. POP CLEAN PREMIUM Pop Clean is a subscription app. Everything above is included, and the weekly plan starts with a free trial — after the trial, a subscription is needed to keep using Pop Clean. Weekly and yearly plans are available, and current prices for your region are shown in the app before anything is confirmed. Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in Settings › Apple Account › Subscriptions. Terms of Use: https://www.popcleanapp.com/terms Privacy Policy: https://www.popcleanapp.com/privacy

Screenshots

Nix Toolkit4 screens
Pop Clean4 screens

Verdict

The call

The clearest difference is in-app purchases: Pop Clean at none against Nix Toolkit's 10. Pop Clean also leads on update cadence (every 5 days vs every 6 weeks). Nix Toolkit's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads 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. Nix Toolkit sells 10 in-app purchases, starting at $4.99 per month. Pop Clean asks for nothing beyond the download.

UpkeepUpdate frequency

Nix Toolkit ships an update every 6 weeks, Pop Clean every 5 days. The most recent releases landed on October 19, 2026 and October 4, 2026 respectively.

Scorecard4 real differences · 6 level
Nix Toolkit versus Pop Clean: the parameters behind the verdict, then further details
ParameterNix ToolkitPop Clean
PriceFreeFree
Rating4.7 (190 ratings) — better—
Positive reviews32.8% of reviews—
Number of ratings190 — better—
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size68 MB33 MB
Age rating4+4+
DeveloperNix Sensor Ltd.RZ LABS INC.

Bugs and requests

Nix Toolkit

Reported bugs

24 issues
  • Sensor crashes if you tab out of the app
  • Takes 5-6 attempts to connect with device
  • Purchased libraries not showing up
  • WiFi router stopping download
  • App crashes since update
Show 19 more
  • App crashes before doing anything
  • App is always 90 degrees wrong on iPads
  • Unit is wildly off even after calibration
  • Constantly prompts for password
  • App took money but won't provide access to Pantone library
  • Cannot connect consistently
  • Battery dead and would not charge
  • Cannot get hold of support
  • Birthday fields don't work on signup
  • Email support form has 'undefined' error
  • App resets settings if device disconnected or phone locked
  • App won't boot up, stuck on 'downloading paints database'
  • Constantly 'downloading paints database'
  • App freezes as soon as you connect
  • App freezes or disconnects constantly
  • App freezes screen and cannot scroll
  • App stuck on downloading paint database
  • App doesn't load up
  • App is stuck downloading paint database

Requested features

20 requests
  • Ability to save and export bulk data as .csv
  • Allow tabbing out of app while collecting data
  • Download paint library without phone signal
  • Show multiple vendor color matches at once
  • Full UI overhaul with iOS conventions
Show 15 more
  • Easier way to scan for color values
  • Easier way to match to paint brands
  • Easier way to save and export data
  • Landscape support for iPads
  • Ability to calibrate sensor
  • On-demand calibration
  • Better password management (Face ID, Apple Keychain)
  • Ability to create custom libraries easily
  • Improved user flow and UI
  • Ability to scan color and get RGB/other values
  • Option to scan color and get multiple paint/other library matches
  • Bring back Nix Paints app functionality
  • More intuitive way to save colors
  • Allow offline use of paint libraries
  • More affordable subscription for Pantone access

Pop Clean

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Nix Toolkit

Subscriptions10
  • RAL$4.991 Month
  • Glass Packaging Institute$8.991 Month
  • NCS$9.991 Month
Show 7 more
  • Pantone FHI$9.991 Month
  • Pantone PMS$9.991 Month
  • RAL$49.991 Year
  • NCS$99.991 Year
  • Pantone FHI$99.991 Year
  • Pantone PMS$99.991 Year
  • Glass Packaging Institute$100.001 Year
None

Pop Clean

No in-app purchases

Questions

Is Nix Toolkit free?
Nix Toolkit is free to download, with in-app purchases available.
Is Pop Clean free?
Pop Clean is free to download, with no in-app purchases.
Do Nix Toolkit or Pop Clean have ads?
Neither Nix Toolkit nor Pop Clean shows ads.
Which is updated more often, Nix Toolkit or Pop Clean?
Nix Toolkit ships an update every 6 weeks, and Pop Clean every 5 days. Most recently, Nix Toolkit was updated on October 19, 2026 and Pop Clean on October 4, 2026.

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