Comparison

Onshape 3D CAD vs G

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

Head to head
About

Onshape 3D CAD

This professional CAD platform enables real-time collaboration on product design from any device. It offers parametric modeling tools, secure cloud storage, and version control, streamlining the design process for teams and individuals. Supports students and educators with free access for non-commercial projects.

Highlights
  • Parametric modeling tools
  • Real-time team collaboration
  • Cloud-based data management
  • Cross-device access
  • Version control and history
  • Commenting and feedback tools
Read full description

Onshape is a full mechanical CAD platform designed for professional users and extended teams. Create, edit, collaborate, and comment in real time with others from any computer or mobile device with an internet connection (free sign-up required). With Onshape’s secure cloud workspace teams can work together from anywhere on any device without the hassles of file management, IT overhead, and license key distribution, helping engineers focus more on doing their best work. Parametric CAD: • Design parts together in Part Studios with a full suite of parametric modeling tools • Create mechanical Assemblies to capture complex motion Ease of Access: • Create, edit, and view from any computer or mobile device (internet connection required) • Begin a project from one device and seamlessly continue from another Collaboration: • Instantly share your CAD data with your teams and partners. Monitor, change, and revoke permissions at any time • Work together with other users and view changes in real-time as they are made • Use Follow mode to see exactly what your teammate sees and add suggestions using Onshape’s built-in commenting tools Data Management: • Maintain a single source of truth for your data, no more sending around or checking in and out of files • Never worry about losing your work, all of your changes are saved automatically • Explore multiple design ideas in parallel and create professional release and approval processes for your designs Onshape for iOS also features Apple Pencil support for more intuitive sketching, navigation, and precise selection. Onshape proudly supports students and educators free of charge and is available free for non-commercial projects in an open-source public work space. Since Onshape is updated every few weeks with dozens of new features and user-requested enhancements, keep an eye out for update notifications from the Apple App Store.

About

G

Measure real-time G-forces on three axes with a precision crosshair display. Track peak G, acceleration history, and impact forces. Ideal for car performance, roller coasters, aviation, and physics experiments.

Highlights
  • 3-axis G-force tracking
  • Precision crosshair display
  • Peak G detection
  • Real-time chart recording
  • G-force level guide
  • Adjustable sensitivity
Features
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G-Force Meter+ Accelerometer shows the G-force your phone feels right now on every axis, then turns each drive, ride or run into a result you can read: press Start, press Stop, and a session card shows the peak G, the average G and how hard you cornered, accelerated and braked. ▶ Live G-force on every axis • Total G on a round gauge with a moving dot for the direction of the force • Lateral (X), longitudinal (Y) and vertical (Z) values side by side • Min, average, max and peak while you record, plus peak chips for lateral, accel and brake • A scrolling chart of X, Y, Z and total G, or a sentence that explains the current G level ▶ Stop and see the session Press Stop and a Session result card appears: • Duration, peak G and average G • Peak lateral, peak accel and peak brake • A second-by-second G trend line (the first 10 minutes of a session) • With the Car activity selected, a plain-language reading of the drive, from Gentle to Very hard, based on the peak horizontal G Every finished session is saved to History automatically (the last 20). A session shorter than 2 seconds is not saved. If you switch apps mid-session, recording pauses in the background and the same session resumes when you return, and a session cut off when the system closes the app is recovered into History on the next launch. Share a result as text in one tap. ▶ History and personal bests Open History from the top of the Meter screen: personal bests, every session with its G trend, your race runs and rolling runs. Export sessions, runs or rolling intervals as CSV. A statistics report CSV unlocks for 24 hours after a short ad. ▶ G-G friction circle A dedicated tab plots lateral against longitudinal G as a trail inside rings at 0.5, 1.0 and 1.5 G, with peak lateral, longitudinal and combined G, so you can see how much grip you used in corners and under braking. ▶ Race mode • 0-60 mph launch timing with raw and rollout times • 60-0 mph brake test with time, distance and speed shed, estimated from the motion sensors • Rolling intervals: 60-120 mph, 100-200 km/h, 30-50 mph or your own range • GPS cross-check with a GPS 0-60 time, a quarter mile time and trap speed. A good fix shows a GPS-verified badge, otherwise the result is labelled as a sensor estimate • Regen profile for electric cars: braking events sorted by their strength into likely regen (gentle) and likely friction (hard), with their maximum G ▶ Set up for your car • Dash or Holder mount, auto-level and Re-level now • Reference 1G (resting reads 1.00 G) or 0G (resting reads 0.00 G) • Display sensitivity from 0.5x to 2.0x for the live gauge; the result card always shows the true values • Activity presets for Car, Roller-coaster, Sport, Elevator and Aircraft explain what each G level means there • A Guide tab with 8 tips on mounting, reading each axis and typical G in daily life • The screen stays on while recording • Interface in 30 languages ▶ Good to know Readings come from the phone's motion sensor, so mount the phone firmly and level it before you record. Launch and braking times are estimates unless they carry the GPS-verified badge. Only drive-test where it is safe and legal. For drivers checking how smooth or hard they drive, track-day and drag-strip fans, roller-coaster riders, and students who want to see physics in numbers.

Screenshots

Onshape 3D CAD4 screens
G3 screens

Verdict

The call

The clearest difference is ads: Onshape 3D CAD at none against G's shown. Onshape 3D CAD also leads on ratings volume (412 vs 3). G's advantage is update cadence (every 4 days vs every 3 weeks) and rating (3.7 vs 3.5). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

G holds the better App Store score, 3.7 against 3.5. That said, the two scores are not equally well evidenced: Onshape 3D CAD has 412 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Onshape 3D CAD ships an update every 3 weeks, G every 4 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard6 real differences · 4 level
Onshape 3D CAD versus G: the parameters behind the verdict, then further details
ParameterOnshape 3D CADG
PriceFreeFree
Rating3.5 (412 ratings)3.7 (3 ratings) — better
Positive reviews47.4% of reviews—
Number of ratings412 — better3
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.4 — better
Further details — not scored
Size77 MB53 MB
Age rating4+17+
DeveloperPTC Inc.Kyu-Hee Jang

Customer experience

Onshape 3D CAD

All ratings412 ratings
Positive61.7%
Neutral5.8%
Negative32.5%
Written reviews424 reviews
Positive47.4%
Neutral6.4%
Negative46.2%

G

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Onshape 3D CAD

Reported bugs

5 issues
  • Frequent crashes and freezes
  • Dimensions not visible/editable
  • Rotation/view controls unreliable
  • Unable to create account
  • Incompatible with older devices

Requested features

5 requests
  • Add keyboard shortcuts
  • Improve dimensioning tools
  • Allow private file storage
  • Optimize for iPad/Apple Pencil
  • Provide better documentation/tutorials

G

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Onshape 3D CAD

No in-app purchases

None

G

No in-app purchases

Questions

Is Onshape 3D CAD free?
Onshape 3D CAD is free to download, with no in-app purchases.
Is G free?
G is free to download, with no in-app purchases.
Which has better reviews, Onshape 3D CAD or G?
G is rated higher. Onshape 3D CAD averages 3.5 out of 5 from 412 ratings, while G averages 3.7 from 3 ratings.
Do Onshape 3D CAD or G have ads?
G shows ads; Onshape 3D CAD does not.
Which is updated more often, Onshape 3D CAD or G?
Onshape 3D CAD ships an update every 3 weeks, and G every 4 days. Most recently, Onshape 3D CAD was updated on October 17, 2026 and G on October 16, 2026.

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