Thread Calculators vs ChatCat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thread Calculators
This app provides precise thread-cutting data for various international standards. It assists machinists, engineers, and CNC professionals in quickly finding essential measurements and detailed tables for thread dimensions and cutting values.
- Supports international thread standards (M, UNC, NPT, etc.)
- Tap Hole Size Calculator
- Bolt Diameter Guide
- Tap Hole Forming Data
- Tap Hole Repair Values
- Detailed thread dimension tables
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Get quick and accurate thread-cutting data with this complete thread calculator app. It supports a wide range of international thread standards, including M, MF, UNC, UNF, UNEF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF. Whether you're a machinist, engineer, or CNC professional, this app helps you find the right measurements instantly. Access detailed tables for thread dimensions and cutting values in one place. Key tools included: - Tap Hole Size Calculator – Find the correct drill size for perfect threading - Bolt Diameter Guide – Quickly check standard bolt dimensions - Tap Hole Forming Data – Accurate values for forming taps - Tap Hole Repair Values – Fix damaged threads with the correct specs This app is your handy companion for fast, reliable, and precise thread-cutting calculations.
ChatCat
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A app that allows you to interact seamlessly with ChatGPT using your own API key. • Flexible Model Selection: Choose from a variety of models, including o1 models, to suit your needs and preferences. • Customizable Proxy/Endpoint: Set up your own custom domain for the proxy or endpoint, giving you full control over your interactions. • Unlimited Prompts: Create and manage as many unique prompts as you’d like, ensuring tailored and personalized experiences every time. • Intuitive Interface: Enjoy smooth, responsive gestures and haptic feedback for a pleasant, user-friendly experience. • No Hidden Costs: No subscriptions, advertisements, or data collection—just a clean, transparent app focused on your privacy and ease of use. Experience the freedom of ChatGPT with total control and no distractions.
Screenshots
Verdict
The clearest difference is price: ChatCat at Free against Thread Calculators's $1.99. Thread Calculators's advantage is iOS requirement (13.0 vs 18.0). On update cadence, 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
ChatCat is free to download; Thread Calculators costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Thread Calculators ships an update every 10 months, ChatCat every 11 months. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.
| Parameter | Thread Calculators | ChatCat |
|---|---|---|
| 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 10 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 51 MB | 11 MB |
| Age rating | 4+ | 17+ |
| Developer | Kantaben Gorasiya | 茵 吕 |
In-app purchases
Thread Calculators
No in-app purchases
ChatCat
No in-app purchases
Questions
Is Thread Calculators free?
Is ChatCat free?
Do Thread Calculators or ChatCat have ads?
Which is updated more often, Thread Calculators or ChatCat?
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