Uncertainty Calculator vs OC Safe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Error propagation calculations
- Absolute and relative error input
- Support for mathematical functions
- Trigonometric calculations (degrees/radians)
- Variable combination in expressions
- Significant figure guidance
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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).
OC Safe
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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
Verdict
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
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.
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.
| Parameter | Uncertainty Calculator | OC Safe |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Volinsky | Okanagan College |
In-app purchases
Uncertainty Calculator
No in-app purchases
OC Safe
No in-app purchases
Questions
Is Uncertainty Calculator free?
Is OC Safe free?
Do Uncertainty Calculator or OC Safe have ads?
Which is updated more often, Uncertainty Calculator or OC Safe?
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