Critical Value Calculator vs DarkBlock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Critical Value Calculator
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Perform hypothesis testing through our efficient critical value calculator. Critical value calculator, a hands-on tool for statisticians, calculates t-value and z-value with a click. Single t-value calculator and z-value calculator are available for use yet, they do not suffice the needs of students. However, in this critical score calculator you can calculate both critical values. Now you can get rid of tiresome practice of looking through hundreds of t- and z-value tables because critical value calculator calculates them in an instant. How to perform calculations: Calculate t-value 1. Specify the significance level in the given box. 2. Select degrees of freedom. 3. Calculate t-value Calculate z-value 1. Enter the significance level in the input box. 2. calculate p-value You can reset the critical value calculator by pressing “reset” button. Basic definitions: 1. Critical value: It is the cut-off value of the graph generated by the test static and shows the region where test static does not lie. Critical value depends upon the significance level. T tells whether to accept of discard null-hypothesis. 2. Significance level: Significance level or statistical significance determines that the difference in population cannot be only associated with chance. 3. Null hypothesis: A hypothesis that describes no difference between two data. And if any difference is seen it appears only by chance. It is abbreviated as (Ho). 4. T-value: It is the calculated difference in the graph relative to the data. 5. Z-value: It is a cut-off point area under the standard distribution of data.
DarkBlock
Enhance your browsing experience by permanently hiding unwanted websites from search results and enabling a dark mode in Safari. This utility app offers a cleaner, more focused way to navigate the web.
- Permanently hide websites from search results
- Enable dark mode in Safari
- Customizable browsing experience
- Clean search results
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1. Permanently hide websites that you don't want in Google Search. 2. Enable Dark Mode in Safari. This app incorporates code from the DarkReader project (https://github.com/darkreader/darkreader), which is MIT Licensed. The license is included below: https://github.com/darkreader/darkreader/blob/main/LICENSE
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Verdict
The clearest difference is price: Critical Value Calculator at Free against DarkBlock's $4.99. Critical Value Calculator also leads on iOS requirement (10.0 vs 15.0). DarkBlock's advantage is update cadence (every 6 weeks vs every 43 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
Critical Value Calculator is free to download; DarkBlock costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Critical Value Calculator ships an update every 43 months, DarkBlock every 6 weeks. The most recent releases landed on September 5, 2026 and July 9, 2026 respectively.
| Parameter | Critical Value Calculator | DarkBlock |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | — | 4.3 (3 ratings) — better |
| Positive reviews | — | 83.3% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 43 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod, Mac | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 25 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ahmad Sattar | 金超 高 |
In-app purchases
Critical Value Calculator
No in-app purchases
DarkBlock
No in-app purchases
Questions
Is Critical Value Calculator free?
Is DarkBlock free?
Do Critical Value Calculator or DarkBlock have ads?
Which is updated more often, Critical Value Calculator or DarkBlock?
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