Comparison

ChronoCalc Pro vs TossKeep

Price, ratings, monetisation and update history for both apps, side by side — 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

TossKeep

Easily declutter your photo library by organizing and deleting images based on when they were taken. This app helps you keep the memories that matter and discard the rest, making photo cleanup feel intuitive and manageable.

Highlights
  • Time-based photo cleaning
  • Swipe action interface
  • Keep important photos
  • Discard unwanted photos
  • Intuitive cleanup process
Features
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Your camera roll doesn’t get messy all at once. It builds up month by month. TossKeep helps you clean your photos the same way you remember them — by time — so cleanup feels easier, letting you keep what maters & toss the rest. SUBSCRIPTION INFORMATION TossKeep offers an auto-renewing subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tosskeep.app

Screenshots

ChronoCalc Pro2 screens
TossKeep4 screens

Verdict

The call

The clearest difference is in-app purchases: ChronoCalc Pro at none against TossKeep's 3. On price, update cadence, ads 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. TossKeep sells 3 in-app purchases, starting at $2.99 per month. ChronoCalc Pro asks for nothing beyond the download.

UpkeepUpdate frequency

ChronoCalc Pro ships an update every 8 days, TossKeep weekly. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level
ChronoCalc Pro versus TossKeep: the parameters behind the verdict, then further details
ParameterChronoCalc ProTossKeep
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.6
Further details — not scored
Size4 MB17 MB
Age rating4+4+
DeveloperERLEND JOHNSRUD VAAGECorey Kane

In-app purchases

None

ChronoCalc Pro

No in-app purchases

3 purchases

TossKeep

Subscriptions2
  • TossKeep Monthly$2.991 Month
  • TossKeep Yearly$9.991 Year
One-time1
  • Lifetime$39.99

Questions

Is ChronoCalc Pro free?
ChronoCalc Pro is free to download, with no in-app purchases.
Is TossKeep free?
TossKeep is free to download, with in-app purchases available.
Do ChronoCalc Pro or TossKeep have ads?
Neither ChronoCalc Pro nor TossKeep shows ads.
Which is updated more often, ChronoCalc Pro or TossKeep?
ChronoCalc Pro ships an update every 8 days, and TossKeep weekly. Most recently, ChronoCalc Pro was updated on October 2, 2026 and TossKeep on September 30, 2026.

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