Comparison

Calc vs Focus Protocol

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

Head to head
About

Calc

This app offers a high-precision scientific calculator with over 50 digits of accuracy. It supports advanced mathematical functions, complex arithmetic, and programmable features for derivatives, integrals, and root finding.

Highlights
  • High-precision calculations (50+ digits)
  • Extensive mathematical functions
  • Programmable features
  • Complex arithmetic
  • Graphing capabilities
  • Derivative and integral calculation
Features
Read full description

Calc-50 is a high-precision scientific graphing RPN calculator. It carries over 50 digits of accuracy and has a large number of mathematical functions, including trig and hyperbolic functions and their inverses, and math special functions such as gamma, beta, psi, exponential integral, sine, cosine, and log integrals, Bessel functions, and more. It is programmable, with functions that take user functions and find derivatives, integrals, function max/min, and roots. Calc-50 also provides complex arithmetic and elementary functions.

About

Focus Protocol

Features
Read full description

Silence the noise. Enter the protocol. FocusProtocol is not just a timer. It is a system designed to induce and sustain the flow state. By combining military-grade app blocking with psycho-acoustic audio engineering, FocusProtocol removes willpower from the equation. Zero distractions Engage the Shield to lock down distracting apps and websites instantly. Built on Apple’s native Screen Time API to create a breach-proof environment. Leaving the protocol requires a conscious decision to fail. Neural audio Enter deep work with our proprietary pink noise engine. Unlike white noise, pink noise reduces brain-wave complexity, promoting stable attention while masking interruptions without fatigue. Global pulse You are not alone. View the live active protocols counter and work alongside thousands in real time. Synchronize your energy with a global rhythm of productivity. Rituals and rewards Dopamine is a tool. Use it deliberately. Completion rituals reinforce your success loop and lock in momentum. OLED-optimized Designed for night owls and early risers. A true-black interface reduces eye strain and preserves battery during long sessions. FocusProtocol Control the environment. Enter flow. Execute.

Screenshots

Calc1 screens
Focus Protocol3 screens

Verdict

The call

The clearest difference is price: Calc at Free against Focus Protocol's $0.99. Calc also leads on iOS requirement (12.0 vs 26.0). Focus Protocol's advantage is update cadence (every 6 weeks vs every 10 months). On ads, in-app purchases 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

Calc is free to download; Focus Protocol costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calc ships an update every 10 months, Focus Protocol every 6 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
Calc versus Focus Protocol: the parameters behind the verdict, then further details
ParameterCalcFocus Protocol
PriceFree — better$0.99
Rating3.7 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 10 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better26.0
Further details — not scored
Size38 MB2 MB
Age rating4+4+
DeveloperDavid SmithAlice-Georgiana TURCANU

In-app purchases

None

Calc

No in-app purchases

None

Focus Protocol

No in-app purchases

Questions

Is Calc free?
Calc is free to download, with no in-app purchases.
Is Focus Protocol free?
Focus Protocol costs $0.99, with no in-app purchases.
Do Calc or Focus Protocol have ads?
Neither Calc nor Focus Protocol shows ads.
Which is updated more often, Calc or Focus Protocol?
Calc ships an update every 10 months, and Focus Protocol every 6 weeks. Most recently, Calc was updated on October 24, 2026 and Focus Protocol on October 15, 2026.

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