Comparison

ToolBox vs KRed Reader

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

Head to head
About

ToolBox

This app offers over 25 utilities to simplify daily tasks, including calculators, generators, scanners, and organizational tools. It features widgets for quick access to frequently used functions and integrates with shortcuts for enhanced efficiency.

Highlights
  • Over 25 versatile utility tools
  • QR/Barcode scanner and generator
  • Multiple calculators (BMI, volume, area)
  • Unit converter
  • Notes and checklists
  • Widgets for quick access
  • iOS Shortcuts integration
Features
Read full description

ToolBox – The Ultimate All-in-One Utility App Experience over 25 versatile features in one app that simplifies your everyday life: • Dice – Virtual roll for quick decisions • Random Number – Generate random numbers in your desired range • Random Letter – Display a random letter • Live Clock – Always keep track of the current time • Date Difference – Calculate the number of days between two dates • Countdown – Set timers for events or tasks • Counter – Count clicks, steps, or other values • QR Code Generator – Create your own QR codes • Barcode Generator – Generate barcodes for various purposes • QR/Barcode Scanner – Quick scanning on the go • Color Picker – Choose precise colors for design projects • BMI Calculator – Calculate your body mass index • Coordinates – Determine your exact location • Air Pressure – Measure the current air pressure • Flashlight – Use your phone as a light source • Compass – Always find the right direction • Prime Number Checker – Check if a number is prime • Stopwatch – Precise timing for sports and events • Notes & Checklists – Organise your tasks efficiently • Speed Measurement – Record your speed • Periodic Table – Always have the periodic table of elements handy • Volume and Area Calculator – Calculate volumes and areas of various shapes • Unit Converter – Convert lengths, weights, temperatures, and more • Unicode Library – Easily search and copy special characters and symbols • Subscript and Superscript Text – Format numbers, formulas, or texts with style • Edit and Save Image Metadata – View and adjust the EXIF data of your photos • Shortcut Integration – Use ToolBox directly through iOS Shortcuts for maximum efficiency Widgets: • Counter • Random Letter • Dice ToolBox is practical, intuitive and versatile – perfect for everyday life, work and leisure.

About

KRed Reader

This app offers a minimalist and distraction-free reading experience for various e-book formats, including novels, comics, and academic papers. It features customizable layouts, text-to-speech functionality, and multiple import options for easy library management.

Highlights
  • Supports EPUB, PDF, MOBI, AZW3, TXT, CBZ, CBR
  • Distraction-free minimalist interface
  • Customizable fonts, spacing, and night mode
  • Text-to-Speech (TTS) for TXT files
  • WiFi, Web, and Photo-to-Book import options
  • Smart bookshelf with auto-categorization
Features
Read full description

KRed Reader: Minimalist Design · Full Format Support · Your Portable Library -Supports All Major E-Book Formats KRed Reader supports EPUB, PDF, MOBI, AZW3, TXT, CBZ, CBR, and other popular e-book formats. Whether you're reading novels, comics, academic papers, or scanned documents, everything displays smoothly! No complicated conversions needed—just import with one tap and enjoy an immersive reading experience. - Distraction-Free Reading Minimalist Interface: No ads, no bloat—just pure content. Customizable Layout: Adjust fonts, text size, spacing, and background color. Night mode protects your eyes. Smart Bookshelf: Auto-categorizes books with tag support for quick access. - Powerful Tools for Efficient Reading Text-to-Speech (TTS): Listen to TXT books on the go—perfect for commutes. Perfect for Every Scenario Students: Annotate PDF textbooks and research papers with ease. Fiction Lovers: EPUB text ensures comfortable long reading sessions. Comic Fans: Smooth zooming and flipping for PDF comics. - Multiple Import Options, Fast & Easy WiFi Transfer: Wirelessly send books from your computer or NAS—no cables needed. Batch Upload: Quickly import large files for better library management. Web Download: Directly download PDF, TXT, EPUB resources and import them instantly. Photo-to-Book: Combine multiple photos into a book and flip through them like pages. QR Code Sharing: Share books with one scan. Privacy Policy:https://privacy.kingjetapps.com/privacy/reader/ios_privacy_reader.html Terms of Service: https://privacy.kingjetapps.com/privacy/reader/ios_term_reader.html Contact Us: For feedback or support, email support@kingjetapps.com.

Screenshots

ToolBox4 screens
KRed Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: KRed Reader at none against ToolBox's 2. KRed Reader also leads on iOS requirement (14.0 vs 16). ToolBox's advantage is update cadence (weekly vs monthly) and review sentiment (100% vs 91%). On price, ads, monetization model 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. ToolBox sells 2 one-off in-app purchases. KRed Reader asks for nothing beyond the download.

UpkeepUpdate frequency

ToolBox ships an update weekly, KRed Reader monthly. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
ToolBox versus KRed Reader: the parameters behind the verdict, then further details
ParameterToolBoxKRed Reader
PriceFreeFree
Rating—4.9 (46 ratings) — better
Positive reviews100.0% of reviews — better90.9% of reviews
Number of ratings—46 — better
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1614.0 — better
Further details — not scored
Size9 MB57 MB
Age rating4+17+
DeveloperSoftpath ElectronicsKingjet Network Co., Ltd.

Customer experience

ToolBox

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

KRed Reader

All ratings46 ratings
Positive97.8%
Neutral0.0%
Negative2.2%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

In-app purchases

2 purchases

ToolBox

One-time2
  • Pro Version$0.99
  • ToolBox Pro$1.99
None

KRed Reader

No in-app purchases

Questions

Is ToolBox free?
ToolBox is free to download, with in-app purchases available.
Is KRed Reader free?
KRed Reader is free to download, with no in-app purchases.
Do ToolBox or KRed Reader have ads?
Neither ToolBox nor KRed Reader shows ads.
Which is updated more often, ToolBox or KRed Reader?
ToolBox ships an update weekly, and KRed Reader monthly. Most recently, ToolBox was updated on October 8, 2026 and KRed Reader on October 15, 2026.

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