n4Studies vs MSD E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
n4Studies
This application simplifies sample size and study power calculations for various research designs. It offers tools for estimating population means and proportions, comparing groups, and analyzing different study types like case-control and randomized controlled trials. Results can be easily shared via email.
- Calculate sample size for infinite/finite populations
- Compare two population means/proportions
- Calculate sample size for various study designs
- Calculate study power for comparisons
- Calculate study power for various study designs
- Share results via email
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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
MSD E
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MSD E-logbook is an e-log book application designed to exclusively use in BMA General Hospital (Klang Hospital) in Thailand. The students can easily record their patients and activities with its simple-to-use interface and enhance their self reflection with many supporting features. The responsible students must be aware that any information involving patients is confidential. The application is still in developing process.
Screenshots
Verdict
The clearest difference is price: MSD E at Free against n4Studies's $1.99. MSD E also leads on update cadence (every 5 weeks vs every 4 months) and iOS requirement (11.0 vs 16.0). 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
MSD E is free to download; n4Studies costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
n4Studies ships an update every 4 months, MSD E every 5 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.
| Parameter | n4Studies | MSD E |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Chetta Ngamjarus | Deverhood HT Co.,Ltd. |
In-app purchases
n4Studies
No in-app purchases
MSD E
No in-app purchases
