Comparison

ChronoCalc Pro vs PicToolbox

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

Head to head
About

ChronoCalc Pro

Features
Read full description

The simplest and most powerful way to calculate time. Perfect for pilots, freelancers, consultants, and anyone who needs to track and calculate hours with precision. FEATURES: - CSV Import/Export - Seamlessly import time logs or export your calculation history. Use a configurable delimiter (comma, semicolon, or tab) for compatibility with any spreadsheet. - Pro Time Math - Add, subtract, multiply, and divide time values effortlessly. - Flexible Time Input - Enter time your way: 1h30m, 1:30, or 1,30. The app intelligently understands your input. - Instant Decimal Conversion - Instantly switch between standard time (1h 30m) and decimal hours (1.5 hrs), with customizable decimal precision. - Multi-line Display - Keep track of complex calculations with a clear, scrollable display where each new operation appears on its own line. - Quick Copy - Tap to copy the final result to your clipboard with a single tap. - Full Customization - Tailor the app to your workflow with settings for appearance (Light/Dark/System), decimal precision, comma interpretation, and CSV formats. - Smart & Robust - Handles negative time values and seconds with perfect formatting. PERFECT FOR: - Pilots: Logging flight hours and calculating block time. - Freelancers & Consultants: Tracking billable hours and creating invoices. - Project Managers: Calculating project durations and resource timing. - Anyone: Converting time formats, adding up timesheets, or any task that involves time math. No ads. No subscriptions. Your data is 100% private and never leaves your device.

About

PicToolbox

Features
Read full description

PicToolbox is a powerful all-in-one image processing app that handles your daily photo needs โ€” all processed locally on your device for complete privacy. Whether you need to compress photos for sharing, resize images for social media, add watermarks for protection, or extract text from screenshots, PicToolbox has you covered. Features: โ€ข Image Compression โ€” Reduce file size while preserving quality โ€ข Format Conversion โ€” Convert between JPG and PNG with adjustable quality โ€ข Remove EXIF/GPS โ€” Strip location, device, and camera metadata for privacy โ€ข EXIF Manager โ€” View and batch-clean photo metadata โ€ข Text Watermark โ€” Add custom text, copyright, or social handles to photos โ€ข Resize & Crop โ€” Adjust dimensions by percentage, pixels, or preset aspect ratios โ€ข Image to PDF โ€” Combine multiple images into a single paginated PDF โ€ข OCR Text Recognition โ€” Extract text from images locally, with copy and export support โ€ข Background Removal (Beta) โ€” Remove portrait backgrounds and export as transparent PNG โ€ข Image Stitching โ€” Combine photos vertically, horizontally, or in a grid layout โ€ข QR Code โ€” Generate QR codes or scan them from existing images โ€ข Image to ZIP โ€” Package single or multiple images into a ZIP file for sharing All processing happens locally on your device. No uploads, no tracking โ€” your images never leave your phone. Perfect for photographers, designers, social media managers, and anyone who works with images daily. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ChronoCalc Pro2 screens
PicToolbox4 screens

Verdict

The call

The clearest difference is in-app purchases: ChronoCalc Pro at none against PicToolbox's 3. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PicToolbox sells 3 in-app purchases, starting at $1.99 per month. ChronoCalc Pro asks for nothing beyond the download.

UpkeepUpdate frequency

ChronoCalc Pro ships an update every 8 days, PicToolbox every 2 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard1 real difference ยท 5 level
ChronoCalc Pro versus PicToolbox: the parameters behind the verdict, then further details
ParameterChronoCalc ProPicToolbox
PriceFreeFree
Update frequencyEvery 8 days โ€” betterEvery 2 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.615.0 โ€” better
Further details โ€” not scored
Size4 MB6 MB
Age rating4+4+
DeveloperERLEND JOHNSRUD VAAGESailiken Tech

In-app purchases

None

ChronoCalc Pro

No in-app purchases

3 purchases

PicToolbox

Subscriptions2
  • PixToolbox Pro Monthly$1.991 Month
  • PicToolbox Pro Annually$9.991 Year
One-time1
  • PicToolbox Pro$14.99

Questions

Is ChronoCalc Pro free?
ChronoCalc Pro is free to download, with no in-app purchases.
Is PicToolbox free?
PicToolbox is free to download, with in-app purchases available.
Do ChronoCalc Pro or PicToolbox have ads?
Neither ChronoCalc Pro nor PicToolbox shows ads.
Which is updated more often, ChronoCalc Pro or PicToolbox?
ChronoCalc Pro ships an update every 8 days, and PicToolbox every 2 weeks. Most recently, ChronoCalc Pro was updated on October 2, 2026 and PicToolbox on October 6, 2026.

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