Comparison

Uncertainty Calculator vs OC Safe

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

Head to head
About

Uncertainty Calculator

This app allows users to perform error propagation calculations for mathematical expressions involving uncertain variables. It supports absolute and relative error inputs, various functions, and trigonometric calculations in degrees or radians. The tool helps ensure accurate reporting of results based on estimated errors.

Highlights
  • Error propagation calculations
  • Absolute and relative error input
  • Support for mathematical functions
  • Trigonometric calculations (degrees/radians)
  • Variable combination in expressions
  • Significant figure guidance
Features
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Uncertainty Calculator evaluates the error propagation throughout the mathematical expressions comprised of variables of uncertain value. The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression. Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%). The evaluated expression can include numerous functions, that provided by row of the appropriate buttons. Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button. Particular attention should be paid to placing brackets to avoid equation ambiguity. The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine). Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of units in any of calculations! Implementation Examples: 1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s: Input: A = 0.15 ± 0.01, B = 120 ± 1 The final expression will be A*B, and press Calculate: The final value will be: 18 ± 1.2 Thus, it can be reported the total charge as 18 C ± 1 C. Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies. 2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height? Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be: A*B – 0.5*9.8*B^2 The final value will be: 0.6 ± 0.4 (meters).

About

OC Safe

Features
Read full description

OC Safe is the official safety app of Okanagan College. It is the only app that integrates with Okanagan College's safety and security systems. Occupational Health and Safety has worked to develop a unique app that provides students, faculty and staff with added safety on the Okanagan College campus. The app will send you important safety alerts and provide instant access to campus safety resources. OC Safe features include: - Emergency Contacts: Contact the correct services for the Okanagan College area in case of an emergency or a non-emergency concern - Tip Reporting: Multiple ways to report a safety/security concern directly to Okanagan College security. - Safety notifications: Receive instant notifications and instructions from campus safety when on-campus emergencies occur. - Campus Maps: Find your way around the OC Campus. - Campus safety resources: access all important safety resources in one convenient app. Download today and ensure that you're prepared in the event of an emergency.

Screenshots

Uncertainty Calculator4 screens
OC Safe4 screens

Verdict

The call

The clearest difference is price: OC Safe at Free against Uncertainty Calculator's $3.99. OC Safe also leads on iOS requirement (15.6 vs 17.0). Uncertainty Calculator's advantage is update cadence (every 3 months vs every 22 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

OC Safe is free to download; Uncertainty Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Uncertainty Calculator ships an update every 3 months, OC Safe every 22 months. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 6 level
Uncertainty Calculator versus OC Safe: the parameters behind the verdict, then further details
ParameterUncertainty CalculatorOC Safe
Price$3.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 22 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size1 MB29 MB
Age rating4+4+
DeveloperRoman VolinskyOkanagan College

In-app purchases

None

Uncertainty Calculator

No in-app purchases

None

OC Safe

No in-app purchases

Questions

Is Uncertainty Calculator free?
Uncertainty Calculator costs $3.99, with no in-app purchases.
Is OC Safe free?
OC Safe is free to download, with no in-app purchases.
Do Uncertainty Calculator or OC Safe have ads?
Neither Uncertainty Calculator nor OC Safe shows ads.
Which is updated more often, Uncertainty Calculator or OC Safe?
Uncertainty Calculator ships an update every 3 months, and OC Safe every 22 months. Most recently, Uncertainty Calculator was updated on October 18, 2026 and OC Safe on October 21, 2026.

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