Sample Size Calculator App vs Reliability of systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sample Size Calculator App
This app calculates sample sizes for statistical studies. It dynamically adjusts the sample size based on user inputs for margin of error, confidence level, population size, and proportion.
- Dynamic sample size calculation
- Adjustable margin of error
- Configurable confidence level
- Population size input
- Proportion input
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Sample size statistical calculator. The sample size changes dinamically with every change in the inputs of margin of error, confidence level, population size and proportion.
Reliability of systems
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This app is a tool for calculating reliability. It is suitable for hobbyist, students or engineers. Features • Mean-Time-Between-Failure (MTBF) calculator • Reliability of series systems • Reliability of parallel systems • Reliability function Features in PRO • Reliability of mixed systems All trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.
Screenshots
Verdict
The clearest difference is price: Reliability of systems at Free against Sample Size Calculator App's $0.99. Sample Size Calculator App's advantage is in-app purchases (none vs 1) and update cadence (every 8 months vs every 18 months). On ads 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
Reliability of systems is free to download; Sample Size Calculator App costs $0.99 up front. Reliability of systems sells 1 one-off in-app purchase. Sample Size Calculator App asks for nothing beyond the download.
Sample Size Calculator App ships an update every 8 months, Reliability of systems every 18 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.
| Parameter | Sample Size Calculator App | Reliability of systems |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 months — better | Every 18 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | LHC Apps | Siu Yuen Ho |
In-app purchases
Sample Size Calculator App
No in-app purchases
Reliability of systems
- Unlock Pro feature$1.99
Questions
Is Sample Size Calculator App free?
Is Reliability of systems free?
Do Sample Size Calculator App or Reliability of systems have ads?
Which is updated more often, Sample Size Calculator App or Reliability of systems?
Other comparisons
