# ISO Fits — user reviews > 31 indexed App Store user reviews of ISO Fits by Trelleborg Sealing Solutions, rated 4.20/5 from 6 ratings. - Source: https://appshunter.io/ios/app/iso-fits/id396863755/reviews - App overview in markdown: https://appshunter.io/ios/app/iso-fits/id396863755.md - Rating breakdown: 5★ 4 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 1 ## Newest reviews (13 of 31) ### 5/5 — Awesome app! *2012-09-24, version 1.6.6* Mechanical engineer must have this app. Makes life much easier! Simple, practical and easy to use! ### 5/5 — Super useful! *2012-08-21, version 1.6.6* I would like it has the complete table ### 5/5 — Great APP *2012-07-19, version 1.6.6* Brilliant tool to have with you at all times!! ### 5/5 — Brilliant! *2012-05-04, version 1.6.6* This little app just simplifies my life so much ### 5/5 — A must for all engineers *2012-02-27, version 1.6.3* Great reference tool, I'll always find it quicker than my Zeus book, and there's 10 times more information! ### 5/5 — Great ref tool *2012-02-18, version 1.6.3* Very handy, easy to use. ### 5/5 — Nice app! *2012-01-16, version 1.6.3* :) ### 5/5 — Awesome app *2011-10-31, version 1.6.3* Very easy to use! ### 5/5 — Handy App *2011-10-01, version 1.6.1* Good to have when you've misplaced your Zeus. ### 5/5 — Very handy *2011-07-05, version 1.6.1* Useful info to have at your finger tips. ### 5/5 — Iso fits *2011-04-22, version 1.6* I loooooooooove this calculator!!! For years I have used an physical one which I brought from Europe as a young engineer. This one is identical but in a virtual package, fantastic tool. Now if I could get the great folks at Trelleborg to create the companion to this, the calculator that allows one to roll the thread choice into one window and showing all the pertinent derived data in a table or window all would be right with the world and I could forgive the English for indoctrinating this country into the British Standard and once it was rooted deeply, they conveniently switched to the metric system. ### 5/5 — excellent app *2011-04-02, version 1.6* Thank you for making this app available. I find it to be incredibly useful when designing with holes and shafts. The Machinery's Handbook is nice, but this is even easier. ### 5/5 — Excellent! *2010-10-31, version 0* It does exactly what I need. Thanks for a great app. ## Most critical reviews (10 lowest-rated) ### 1/5 — Can’t enter decimal points *2023-05-03, version 3.9* When you try to enter data, it pulls up the phone keypad—so you cannot enter decimal points. Interestingly there is a paste option to copy numbers from elsewhere—not working. There is a photo option to read in numbers through your camera—it reads the number, but when you tap ‘insert’, is does not insert. App currently only good for integers…. I love the info that Trelleborg puts out, but they need to fix this glitch. ### 1/5 — Completely Impractical *2016-04-20, version 3.0* Whilst it lists every imaginable tolerance, there is no way of selecting suitable pairs of tolerances. If hoy want a light interference fit - hole basis, get your Zeus out! ### 4/5 — Wish I'd seen it before *2011-08-24, version 1.6.1* Very handy little app that really speeds up finding tolerance data, I'll be using it a lot! ### 4/5 — Awsome app *2011-06-24, version 1.6.1* Very helpful and easy to use ### 4/5 — Tres utile *2011-04-18, version 1.6* Fait tres bien la job, rapide et facile a utiliser. Demanderais l'option de voir les resultats en ei es et it ### 4/5 — More tolerances *2011-01-31, version 1.4* I love the app, but please include all the tolerances to make my life easier! ### 4/5 — Does it speak German too! *2011-01-19, version 1.3* Just kidding. The app is a real time saver for me at my inspection lab. Don't have to dig through manuals as much. Could use an update to include all nominal sizing, then I could throw my tech manual away... ### 4/5 — Great tool *2010-10-29, version 0* This is a very handy app for any engineer. ### 5/5 — Incroyable *2026-05-11, version 4.3* Application incroyable et très utile. J’adore Trelleborg et j’adore iso fits, félicitations. ### 5/5 — Trop cool *2026-05-11, version 4.3* J’adore trellborg et ido fit ## Most praised reviews (8 highest-rated) ### 5/5 — Mechanical engineering *2025-02-04, version 4.2* This was a fantastic app, but I wish it had the surface roughness. Quite disappointed it didn’t, and it should also help with any future engineers. Much love. It should also a thermodynamics CFD software and Anysys Gradupack 🫨🫨🫨 ### 5/5 — Fit for the job *2016-03-23, version 2.9* Comes in very handy ,easy to use ### 5/5 — Works verywell for ISO fits *2016-01-11, version 2.9* The app works great. Would be helpful if a metric shaft could be entered and imperial fits returned. ### 5/5 — Good *2014-09-25* Very good ### 5/5 — Mech. Engineer *2014-08-14, version 2.2* Accurate and easy to use, a great tool to have. I am using the application frequently and I am very pleased with its capabilities. ### 5/5 — Handy App *2014-07-01, version 2.1* Very useful when computing tolerances for various fits between shafts and holes! ### 5/5 — Very useful tool *2013-09-09, version 1.9* Great app which I'm getting more use of than I would've imagined ### 5/5 — Great engineering app *2012-11-01, version 1.6.6* Great quick access for Fits..... Very useful. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*