BIG KAISER vs Tolerance Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BIG KAISER
Access essential cutting data for various applications with this tool. It provides precise information for numerous boring heads, aiding in practical applications and specific tests. Save and share your cutting data easily.
- Cutting data for boring heads
- Supports multiple languages
- Cutting data in mm and inch
- Infeed calculation with tolerances
- Save and send cutting data
- Connect with EWE tools
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The new cutting data app leads you simple and conveniently, to the cutting data you need for your application. The BIG KAISER Cutting Data’s are the result of practical experience and specific tests. For all standard applications, the new BIG KAISER app will provide you with the fitting cutting data. In total, the app contains 61 BIG KAISER boring heads, from the smallest diameter of 0.4 mm up to 620 mm. Features • App in English, German, Italian, French and Spanish available • Cutting Data for rough and fine boring tools in mm and inch • Saving and sending used cutting data • Infeed calculation of the tools with tolerances • Manuals in German, French and English • Connect App with the EWE tools
Tolerance Helper
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Tolerance Calculator Tolerance Calculator is a comprehensive engineering reference tool for mechanical design and precision manufacturing professionals. This app simplifies the process of calculating dimensions with ISO standard tolerances for both holes and shafts. Key Features Comprehensive Tolerance Reference Complete reference table of engineering tolerances Support for both hole and shaft designations (e.g., H7, h7) Spans all standard dimensional intervals Easy Tolerance Calculation Calculate minimum, maximum, and average dimensions Enter a nominal dimension and view all tolerance limits instantly Results displayed clearly with color-coded indicators Copy results to clipboard with a single tap Powerful Search and Filtering Quick search for specific tolerance designations Filter by hole or shaft tolerances Recent searches history for faster access Customizable tolerance filter to show only designations you need Multi-unit Support View tolerances in millimeters (mm) Convert to inches (in) with proper precision Convert to micrometers (μm) for precision work User-Friendly Interface Intuitive navigation with tolerance table Clean, engineering-focused design Clear color coding: blue for holes, green for shafts Clickable cells for instant calculations Accessibility Features Dark mode support for low-light environments Responsive layout for phones and tablets Support for both portrait and landscape orientations Localization English and Russian language support International engineering symbols Professionally translated interface Perfect For Mechanical engineers CNC machinists Manufacturing technicians Quality control specialists Engineering students Technical designers Precision fabricators Tolerance Calculator is the essential pocket reference for anyone working with precision mechanical parts. Calculate proper fits and clearances accurately without the need for paper tables or complex formulas. Download now and simplify your engineering calculations!
Screenshots
Verdict
The clearest difference is update cadence: Tolerance Helper at weekly against BIG KAISER's every 2 months. BIG KAISER's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BIG KAISER ships an update every 2 months, Tolerance Helper weekly. The most recent releases landed on June 11, 2026 and September 26, 2026 respectively.
| Parameter | BIG KAISER | Tolerance Helper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 82 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | BIG KAISER Praezisionswerkzeuge AG | Dmitriy Trofimov |
Customer experience
BIG KAISER
Tolerance Helper
In-app purchases
BIG KAISER
No in-app purchases
Tolerance Helper
No in-app purchases







