Comparison

BIG KAISER vs Tolerance Helper

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

Tolerance Helper

Features
Read full description

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

BIG KAISER3 screens
Tolerance Helper4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
BIG KAISER versus Tolerance Helper: the parameters behind the verdict, then further details
ParameterBIG KAISERTolerance Helper
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size82 MB21 MB
Age rating4+4+
DeveloperBIG KAISER Praezisionswerkzeuge AGDmitriy Trofimov

Customer experience

BIG KAISER

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Tolerance Helper

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BIG KAISER

No in-app purchases

None

Tolerance Helper

No in-app purchases

Questions

Is BIG KAISER free?
BIG KAISER is free to download, with no in-app purchases.
Is Tolerance Helper free?
Tolerance Helper is free to download, with no in-app purchases.
Do BIG KAISER or Tolerance Helper have ads?
Neither BIG KAISER nor Tolerance Helper shows ads.
Which is updated more often, BIG KAISER or Tolerance Helper?
BIG KAISER ships an update every 2 months, and Tolerance Helper weekly. Most recently, BIG KAISER was updated on June 11, 2026 and Tolerance Helper on September 26, 2026.

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