n4Studies vs EPview
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
EPview
Stream high-resolution microscopic images and Full HD videos from your camera. Capture, annotate, and measure specimens, then share your findings. Ideal for creating a digital classroom experience for collaborative learning.
- Stream high-resolution images and Full HD videos
- Take snapshots and make annotations
- Perform measurements on specimens
- Share images and videos
- Connect up to six students simultaneously
- Control EP50 camera on mobile device
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Stream high-resolution images and Full HD videos of your microscopic specimen, take snapshots, make annotations and measurements, and share them using the EPview App. Simple and intuitive operation enables you to comfortably control the EP50 camera on your mobile device. Up to six students at a time can connect to a microscope equipped with a WLAN-enabled OLYMPUS EP50 digital camera. They can learn about and discuss microscopic specimens, snap images, make videos, store the data on their devices, and share the images with others. Images can be enriched with annotations, and specimen structures can be analyzed using the interactive count and measurement functions. Use EP50 digital microscope cameras and the EPview App to setup a digital classroom optimized for your needs and make teaching more powerful and effective using these digital tools. For more information visit https://www.olympus-lifescience.com/camera/color/ep50/ Intended use: EPview is for research use only. EPview is solely intended for research and education purposes and not for any form of in vitro diagnostics or clinical use. Olympus is a registered trademark and EPview is a trademark of EVIDENT CORPORATION.
Screenshots
Verdict
The clearest difference is review sentiment: n4Studies at 100% against EPview's 0%. n4Studies also leads on rating (5.0 vs 3.2) and update cadence (every 4 months vs every 11 months). EPview's advantage is price (Free vs $1.99) and ratings volume (12 vs 1). On ads and in-app purchases 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
EPview is free to download; n4Studies costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
n4Studies holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: EPview has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of n4Studies's written reviews are positive against 0% of EPview's.
n4Studies ships an update every 4 months, EPview every 11 months. The most recent releases landed on August 7, 2026 and August 28, 2026 respectively.
| Parameter | n4Studies | EPview |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.2 (12 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | Every 4 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #186 — better | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Chetta Ngamjarus | Evident Technology Center Europe GmbH |
Customer experience
n4Studies
EPview
In-app purchases
n4Studies
No in-app purchases
EPview
No in-app purchases
