Comparison

Ops Clock vs Max Calc

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

Head to head
About

Ops Clock

A versatile utility app offering a world clock with over 400 cities, unlimited timers, and three powerful calculators for time zone, time, and date arithmetic. It also features an event log to track real-time occurrences and elapsed times.

Highlights
  • World clock with 400+ cities
  • Unlimited count-up and countdown timers
  • Time zone, time, and date calculators
  • Event log with elapsed time tracking
  • Customizable labels and notifications
Features
Read full description

Professional grade clock and timer tool with four functions in one app: • World clock • Digital seconds display • Compact format • Over 400 cities • Set custom labels • Clocks sorted automatically • Unlimited number of timers • Count-up timers • Countdown timers • Wall clock timers • End-time notifications • Pre-notifications • Elapsed time and ETA in any zone • Three calculators • Time zone calculator helps plan multi-city conf calls • Time calculator for time arithmetic, including across different time zones • Date calculator for date arithmetic • Event Log • Stores a record of real-time events • Shows elapsed time between events This app is free, shows no advertisements, makes no use of the network and collects no personal information. Available in English, Spanish, French, Italian and Portuguese.

About

Max Calc

This app offers a versatile calculation suite, combining standard, scientific, developer, and accounting functions. It also includes a unit converter and tools for health and date calculations, all within a user-friendly interface.

Highlights
  • Standard and Scientific Calculator
  • Developer Calculator (hex, binary)
  • Accounting Calculator
  • 130+ Unit Converter
  • Body and Date/Time Calculator
  • History tracking
  • Customizable result formatting
Features
Read full description

Max Calc: Your All-in-One Calculator App Max Calc is more than just a calculator; it's a comprehensive toolset designed to simplify your calculations across various domains. With its six-in-one functionality, you can effortlessly handle everything from basic arithmetic to complex scientific computations, developer-specific tasks, financial calculations, unit conversions, and even personal health metrics. Key features include: * Standard and Scientific Calculator: Perform basic and advanced calculations with ease. * Developer Calculator: Work with hexadecimal, binary, and 7-64 bit numbers, along with integer/real number CPU representation and signed/unsigned arithmetic. * Accounting Calculator: Tackle financial calculations with dedicated functions. * 130+ Unit Converter: Convert between various units of measurement effortlessly. * Body and Date/Time Calculator: Calculate BMI, age, and more. Max Calc is designed with simplicity in mind, providing a user-friendly interface without compromising on functionality. Enjoy features like memory storage, history tracking, customizable result formatting, and more.

Screenshots

Ops Clock4 screens
Max Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Ops Clock at none against Max Calc's 2. Ops Clock also leads on ratings volume (11 vs 1) and iOS requirement (15.0 vs 17.0). Max Calc's advantage is update cadence (every 9 days vs every 5 months) and rating (5.0 vs 4.7). On price, review sentiment, ads and monetization model 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. Max Calc sells 2 one-off in-app purchases. Ops Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Max Calc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ops Clock has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Ops Clock ships an update every 5 months, Max Calc every 9 days. The most recent releases landed on August 25, 2026 and June 4, 2026 respectively.

Scorecard5 real differences · 5 level
Ops Clock versus Max Calc: the parameters behind the verdict, then further details
ParameterOps ClockMax Calc
PriceFreeFree
Rating4.7 (11 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11 — better1
Update frequencyEvery 5 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size2 MB8 MB
Age rating4+4+
DeveloperJames KretchmarAnatolii Mazkun

Customer experience

Ops Clock

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Max Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ops Clock

No in-app purchases

2 purchases

Max Calc

One-time2
  • 5 days Free Using All PremiumFree
  • Premium features$4.99

Questions

Is Ops Clock free?
Ops Clock is free to download, with no in-app purchases.
Is Max Calc free?
Max Calc is free to download, with in-app purchases available.
Which has better reviews, Ops Clock or Max Calc?
Max Calc is rated higher. Ops Clock averages 4.7 out of 5 from 11 ratings, while Max Calc averages 5.0 from 1 ratings.
Do Ops Clock or Max Calc have ads?
Neither Ops Clock nor Max Calc shows ads.
Which is updated more often, Ops Clock or Max Calc?
Ops Clock ships an update every 5 months, and Max Calc every 9 days. Most recently, Ops Clock was updated on August 25, 2026 and Max Calc on June 4, 2026.

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