📱 App Store Intelligence
n4Studies
Chetta Ngamjarus · Education
Rating
5.0 ★
27 ratings
Price
฿79.00
US storefront
Size
8.0 MB
v2.3
Age Rating
4+
1 languages
Categories
Education
Utilities
Daily chart position by storefront
Top Paid (Apps)
Tracking since 20 Apr 2026 · lower is better · hover a point for the exact date and rank
Description
Ease to calculate the sample size with n4Studies.
n4Studies makes it easy to calculate the sample size and the power of a study. It comes with ABSOLUTELY NO WARRANTY. However, It can help to learn and find the ways to calculate the sample size and power of the study in minutes.
Key features:
• Calculate the sample size for estimating an infinite population mean, finite population mean, infinite population proportion and finite population proportion
• Calculate the sample size for comparing two population means and two population proportions
• Calculate the sample size for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for comparing two population means and two population proportions
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• You can send a result via Email to your colleague
n4Studies makes it easy to calculate the sample size and the power of a study. It comes with ABSOLUTELY NO WARRANTY. However, It can help to learn and find the ways to calculate the sample size and power of the study in minutes.
Key features:
• Calculate the sample size for estimating an infinite population mean, finite population mean, infinite population proportion and finite population proportion
• Calculate the sample size for comparing two population means and two population proportions
• Calculate the sample size for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for comparing two population means and two population proportions
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• You can send a result via Email to your colleague
Screenshots
Recent reviews (US)
No reviews collected for this app yet — review sampling is currently limited to apps ranked in the US Top 100 (Top Free, Top Paid or Top Grossing) to stay within Apple's request limits.
Chart presence — 1 Top 100 position
| Storefront | Category | Chart | Rank |
|---|---|---|---|
| Thailand | Apps | Top Paid | #33 |
Ratings by country — 1 storefront
| Storefront | Rating | Rating Count | Price |
|---|---|---|---|
| Thailand | 5.0 ★ | 27 | Free |
Details
App Store data shown here is sourced from Apple's public iTunes RSS chart feeds and the iTunes Lookup API, collected by Zing at regular intervals. Figures may differ from Apple's internal App Store Connect analytics.
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