Tolerance and fits ISO is made and published by Машков Олег. AppBrain is an independent app data site and isn't affiliated with Машков Олег. The app name, icon, screenshots and description belong to Машков Олег and are shown as published on Google Play.

Summary

Tolerance and fits ISO provides a compact reference for tolerances, fits, GD&T, and dimensional calculations across ГОСТ, ISO, and ASME standards. It includes a built-in unit converter and a dimensional calculator, with free, unobtrusive advertising. With 100,000+ total and 2.9K downloads in the last 30 days, it’s a trusted tool for engineers.

Pros & Cons

Specializes in tolerances, fits, and GD&T across ГОСТ, ISO, and ASME standards
Free to use with unobtrusive advertising
Unit converter and dimensional chain calculations built-in
Calculations are saved for reference and easy review

Lacks broader topics like flange, piping, valve, and thread calculations common in competitors
Coverage focused on tolerancing; other mechanical engineering topics are not emphasized
Advertising-supported model may be complemented by more expansive CAD-oriented tools in some rivals

About Tolerance and fits ISO

Tolerance and fits ISO is an education app developed by Машков Олег.

Install Statistics

Tolerance and fits ISO has been installed 180 thousand times. In the last 30 days, the app was installed 2.9 thousand times.

User Ratings

Tolerance and fits ISO is rated 5.00 out of 5 stars. The rating is based on 470 ratings.

App Information

Tolerance and fits ISO is freely available from Google Play. The app size is 91.28 MB. The latest version available is 7.0.4. The last update was on November 15, 2025.

Technical Requirements

Tolerance and fits ISO requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since October 2020.

Description by Машков Олег (from Google Play)

Application features:

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Screenshots

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Screenshots by Машков Олег, from the Google Play listing

Official page on Google Play

Alternatives to Tolerance and fits ISO

Google Play Rating history and histogram

470

Installs over time

Tolerance and fits ISO has been installed 180 thousand times. Over the past 30 days, it averaged 95 installs per day.

Changelog of Tolerance and fits ISO

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Developer information for Машков Олег

Машков Олег

mashkovoleg88@gmail.com

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Comments on Tolerance and fits ISO for Android

★★★★☆ charl labuschagne · Jul 26, 2021

Really a good app if you are unsure about you sizes and limits(tolerances). Good job.

★★★★★ Oswald's Ghost · Dec 9, 2025

Excellent intuitive UI. This app makes finding tolerances so much easier than looking them up on physical charts.

★★★★☆ Ritu11 Kumari · Apr 15, 2023

I liked this app Realy very useful. Easy to use and reduce other loads to see bulky tables for the values manually.

★★★★☆ Jo Hu · Jan 29, 2026

Hi, would get a 5/5 if you could skip the "loading screen" at startup (the made withy unity message)

Google Play Rankings for Tolerance and fits ISO

This app is not ranked

Technologies used by Tolerance and fits ISO

18 permissions · 47 libraries

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Trust & Safety: Permissions requested: android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_ADSERVICES_TOPICS, android.permission.ACCESS_NETWORK_STATE, android.permission.ACCESS_WIFI_STATE, android.permission.FOREGROUND_SERVICE, android.permission.FOREGROUND_SERVICE_DATA_SYNC, android.permission.INTERNET, android.permission.READ_EXTERNAL_STORAGE, android.permission.RECEIVE_BOOT_COMPLETED, android.permission.VIBRATE, android.permission.WAKE_LOCK, android.permission.WRITE_EXTERNAL_STORAGE, com.MashkovKO.Dopuski_I_posadki_GOST.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION, com.android.vending.BILLING, com.android.vending.CHECK_LICENSE, com.applovin.array.apphub.permission.BIND_APPHUB_SERVICE, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID. The app lists multiple ad networks in dev-features (e.g., AdMob, Unity Ads, IronSource, AppLovin, Vungle), and the advertising policy states existing advertising does not interfere with the user and there are no interstitial ads. Information provided is for reference only.

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