Thread Calculator vs Optimum CRM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thread Calculator
This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.
- Thread cutting calculator for multiple units
- Cold forming calculator
- Thread repair calculator
- Tap hole and bolt diameter calculation
- Saves time compared to tables
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The app includes: - A calculator for thread cutting for the following units: M, MF, UNC, UNEF, UNF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF - A calculator for cold forming - A calculator for thread repair You want to know which tap hole you should drill for threading or which bolt you should use? With this app, you will find the desired measures in no time: Simply select the desired thread type, nominal size, and pitch and you will get the matching diameter for your project. This saves precious time you would have spent tediously searching for internal and external thread dimensions in tables. As this app is still in its development phase, new features will follow soon, so stay tuned! GSR Gustav Stursberg GmbH is a manufacturer for high-quality thread cutting tools with 130 years of operational experience in the area of threading tool production. The product portfolio includes a wide selection of tools for different areas of application. GSR taps, twist drills, round dies, and tool holders are manufactured to the highest quality standards in our own production facilities. The constant quality control during the production process guarantees a consistent good quality in all national as well as international production facilities. This requires enormous precision, which is reflected by our tools. Precision is in the details. Since 1889.
Optimum CRM
This AI-powered SaaS CRM platform streamlines sales, marketing, and management with automated workflows and employee performance tools. It offers comprehensive analytics to enhance customer engagement and drive business growth.
- AI-driven CRM management
- Employee AI features
- Workflow automation
- Sales and marketing automation
- Seamless integrations
- Real-time analytics
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In today’s fast-paced digital world, businesses need more than just a traditional CRM—they need a smart, AI-powered automation solution that streamlines operations, enhances productivity, and drives growth. Introducing Optimum, a revolutionary SaaS-based CRM management platform by Techtegy, designed to transform the way businesses handle sales, marketing, and overall management. With AI employee features, workflow automation, and comprehensive analytics, Optimum empowers businesses to scale effortlessly while ensuring maximum efficiency. Why Choose Optimum? Optimum is not just another CRM; it’s an all-in-one business solution that automates and optimizes customer relationship management, sales tracking, marketing automation, and employee performance monitoring. Whether you're a startup, a growing business, or an enterprise, Optimum offers powerful tools to manage leads, enhance customer engagement, and increase revenue—all while reducing manual effort. Here’s what makes Optimum stand out: AI-Driven CRM Management – Automate customer interactions and enhance engagement with AI-driven insights. Employee AI Features – Monitor, guide, and enhance employee performance through AI-powered tools. Complete Automation – Reduce manual efforts with automated workflows, reminders, and task scheduling. Sales & Marketing Automation – Increase conversions through intelligent lead nurturing, campaign management, and customer retention strategies. Seamless Integrations – Connect Optimum with your existing tools and platforms for a smooth experience. Real-Time Analytics & Insights – Make data-driven decisions with in-depth reports and performance tracking.
Screenshots
Verdict
The clearest difference is rating: Optimum CRM at 5.0 against Thread Calculator's 4.3. Optimum CRM also leads on ads (none vs shown) and update cadence (every 3 months vs every 18 months). Thread Calculator's advantage is ratings volume (13 vs 1). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Optimum CRM holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Thread Calculator has 13 ratings behind it against 1, so its average is the more settled of the two.
Thread Calculator ships an update every 18 months, Optimum CRM every 3 months. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively.
| Parameter | Thread Calculator | Optimum CRM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 18 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 25 MB | 318 MB |
| Age rating | 4+ | 4+ |
| Developer | GSR Gustav Stursberg GmbH | Techtegy LLC |
Customer experience
Thread Calculator
Optimum CRM
In-app purchases
Thread Calculator
No in-app purchases
Optimum CRM
No in-app purchases
Questions
Is Thread Calculator free?
Is Optimum CRM free?
Which has better reviews, Thread Calculator or Optimum CRM?
Do Thread Calculator or Optimum CRM have ads?
Which is updated more often, Thread Calculator or Optimum CRM?
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