Comparison

O vs SolidInsight

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

Head to head
About

O

This app helps users calculate O-Ring dimensions and find compatible materials for their applications. It provides recommendations based on ISO standards and supports both metric and inch measurements.

Highlights
  • O-Ring housing calculation
  • O-Ring size recommendations by ISO standard
  • Quick search by national/international standards
  • O-Ring tolerance calculation
  • Metric and inch unit switching
  • Chemical compatibility check
  • Integration of Trelleborg Sealing Solutions Videos
Features
Read full description

The Trelleborg Sealing Solutions O-Ring App calculates O-Ring dimensions by simply entering installation specifications for your application in metric or inch. In addition, the App recommends O-Ring sizes according to ISO 3601 so you know exactly which part you need. Features at a Glance: - O-Ring Housing: After entering the bore or rod/shaft diameter, you will receive an O-Ring recommendation and O-Ring housing calculation according to the recommendations of ISO 3601 - O-Ring Quick Search: offers the selection of O-Ring nominal sizes according to the following national/international standards: ISO 3601-1 Class B (International), ISO 3601-1 Class A (AS 568, USA), NFT 47-502 (France), JIS B 2401 (Japan) SMS 1586 (Sweden) - Tolerances: calculation of O-Ring tolerances according to ISO 3601-1 Class B and Class A - Switch between metric and inch - Chemical compatibility check: find out which materials are compatible with the media used in your application. - Integration of Trelleborg Sealing Solutions Videos

About

SolidInsight

View and collaborate on 2D and 3D CAD files on your mobile device without needing expensive desktop software. Measure designs, access properties, and share feedback instantly.

Highlights
  • Supports major 2D/3D CAD formats
  • View models and drawings on mobile
  • Measure design dimensions
  • Access design properties
  • Markup and share comments
  • Isolate/hide components
  • Browse assembly tree
Features
Read full description

SolidInsight is a proven professional CAD collaboration application. It supports all the major 3D and 2D CAD formats, including SOLIDWORKS, CREO / PRO-E, UG / NX, CATIA, Solid Edge, Inventor, AutoCAD and many more. SolidInsight on your phones or tablets assists you to instantly view 3D models and 2D drawings without expensive CAD editors or heavy computers. Whether you are reviewing designs with your team on the road, showing off your products to potential customers at a tradeshow, collecting design feedback from a client on a job site, or guiding a supplier on a factory floor, 3D at your fingertips gives you immediate CAD access, intuitive visual insights, and accurate properties such as mass, bounding box sizes, volumes, and other meta data. Beyond handy viewing, you can also measure models to obtain vital dimensions, capture views for quick revisits and 3D presentations. Features: * Intuitive and easy-to-use user interface * Supports all the major 3D and 2D formats as follows.sat, sab, cgr, model, session, CATPart, CATProduct, 3dxml, ifc, igs, iges, ipt, iam, jt, x_t, x_b, xmt_txt, xmt_bin, prt, asm, xas, 3dm, step, stp, par, psm, sldprt, sldasm, 3ds, bdf, jcd, obj, stl, ply, 3mf, glb, gltf, fbx, rvm, rvt, dwg, dxf. * Measure your design data * Access design properties * Isolate or hide components in the model for easy viewing * Zoom, pan and rotate your 2D or 3D CAD data using multi-touch * Browse your assembly components tree, configurations and drawing sheets * Create views,convince hiring managers, customers, partners, investors of your values in 3D. * View your designs in full screen * Markup your designs and send to others and read others’ markups * Share with stakeholders inside and outside your company * Search for parts in the model and see them automatically highlighted in the design * Sample files included Facebook: https://www.facebook.com/people/Hoteam-SolidInsight/100075484253549/ Service Terms:https://www.solidinsight3d.com/solidInsight/privacy/agreement.html Privacy Policy:https://www.solidinsight3d.com/solidInsight/privacy/privacy.html

Screenshots

O4 screens
SolidInsight4 screens

Verdict

The call

The clearest difference is rating: SolidInsight at 4.4 against O's 3.8. SolidInsight also leads on review sentiment (100% vs 83%) and update cadence (every 5 weeks vs every 3 months). O's advantage is in-app purchases (none vs 3). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SolidInsight sells 3 in-app purchases, starting at $46.99 per year. O asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SolidInsight holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews point the same way: 83% of O's written reviews are positive against 100% of SolidInsight's.

UpkeepUpdate frequency

O ships an update every 3 months, SolidInsight every 5 weeks. The most recent releases landed on September 30, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
O versus SolidInsight: the parameters behind the verdict, then further details
ParameterOSolidInsight
PriceFreeFree
Rating3.8 (5 ratings)4.4 (7 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings57 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better13.0
Further details — not scored
Size26 MB258 MB
Age rating12+4+
DeveloperTrelleborg Sealing SolutionsSHANDONG HOTEAM SOFTWARE CO., LTD.

Customer experience

O

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews12 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

SolidInsight

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

O

No in-app purchases

3 purchases

SolidInsight

Subscriptions2
  • Starter Annual Subscription$46.991 Year
  • Premium Annual Subscription$94.991 Year
One-time1
  • Unlock features in a design$0.99

Questions

Is O free?
O is free to download, with no in-app purchases.
Is SolidInsight free?
SolidInsight is free to download, with in-app purchases available.
Which has better reviews, O or SolidInsight?
SolidInsight is rated higher. O averages 3.8 out of 5 from 5 ratings, while SolidInsight averages 4.4 from 7 ratings.
Do O or SolidInsight have ads?
Neither O nor SolidInsight shows ads.
Which is updated more often, O or SolidInsight?
O ships an update every 3 months, and SolidInsight every 5 weeks. Most recently, O was updated on September 30, 2026 and SolidInsight on September 22, 2026.

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