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samplingplans.com is a statistical sampling plan website maintained by H & H Servicco Corp. It provides software, tutorials, best practices, and discussion forums related to acceptance sampling and estimation sampling for audits and surveys. Its positioning is closer to traditional desktop statistical tools than to modern cloud-based SaaS.
The site focuses on two types of sampling plans: acceptance sampling for detecting nonconforming products and processes, and estimation sampling for obtaining precise estimates in audits and surveys. Key methods mentioned include OC curves, margin-of-error calculations, and software-based statistical computation. TPZero is an Ac=0 sampling tool split out from TP105 v3. It can calculate sample sizes based on RQL and consumer’s risk Beta, display decision rules and consumer protection probability statements, and calculate the AQL at a producer’s risk of 0.05. It is based on the binomial distribution for attribute sampling and is suitable when the lot size is at least 10 times the sample size.
TPZero offers a fully functional 14-day free trial. A permanent registration code costs US$50, or US$53.25 including tax in Minnesota. If you later upgrade to TP105 v3, you can receive a US$50 credit. The main text does not provide full pricing for TP105, TP414, or TP781, and the store page appears to be temporarily unavailable, so the purchasing process is somewhat uncertain.
The strengths are its focused functionality, relatively clear explanations of statistical assumptions, and the availability of help files, printable manuals, online manuals, forums, and tutorials. The one-time purchase price is also low. The drawbacks are equally apparent: the web page was last modified in 2010, and the product format feels dated; only Windows support is clearly stated; and there is no visible API, third-party integration, permission management, audit logging, data security compliance, or other enterprise software capabilities.
It is suitable for quality engineers, sampling plan designers, audit sampling professionals, and users who need a low-cost local tool for Ac=0 or related acceptance sampling calculations. It is not a good fit for large enterprise software scenarios that require team collaboration, cloud deployment, system integration, or compliance governance.
The main text does not provide information about network access from China, payment methods, or localization, so access status is rated as unknown. For domestic alternatives, users may consider options such as Minitab, JMP, R/Python statistical libraries, or Excel sampling templates.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on samplingplans.com official site.
samplingplans.com is an United States Education provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach samplingplans.com directly.