Comparison

GravLens3 vs MGoPark

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

Head to head
About

GravLens3

Simulate the effects of gravitational lensing on your iPhone or iPad. Adjust lens parameters and apply distortions to your photos or live camera feed. Share your creations or project them for educational purposes.

Highlights
  • Simulate Hubble Space Telescope images
  • Adjust lens size and ellipticity
  • Distort photos from library or camera
  • Live real-time lensing view
  • AirPlay and external monitor support
  • Save and share distorted images
Features
Read full description

Gravitational lensing is a remarkable astrophysical phenomenon, where the light of a distant galaxy is bent by a massive foreground galaxy. Now you can simulate the effect of a gravitational lens on your iPhone or iPad! With GravLens3, a remarkable and educational tool you can: * Simulate Hubble Space Telescope images of strong gravitational lenses * Adjust the size and ellipticity of the lens model * See the distortion on a picture from your photo library or camera * Save the image, tweet it, post to Facebook, or print it * Live View: view the world through a gravitational lens! Real-time lensing with your camera. * Airplay and external monitor support. Broadcast your lensing to an external projector or Apple TV. Great for lectures! * Retina display, iPhone 6/6 plus all supported.

About

MGoPark

Navigate parking at the University of Michigan with real-time availability updates, interactive maps, and proactive notifications for permit renewals and campus announcements. Find parking based on permit type, get directions, and access resources like EV charging and parking programs.

Highlights
  • Real-time parking availability
  • Interactive campus map
  • Proactive notification alerts
  • Turn-by-turn directions
  • Save favorite locations
  • Permit renewal reminders
  • Resource section for parking programs
Features
Read full description

MGoPark is the essential tool for navigating parking at the University of Michigan. Our app offers real-time updates on availability across campus lots, an interactive map, and now, proactive notifications to keep you informed. Stay ahead with alerts for permit renewals, parking availability, and important campus announcements. Missed a notification? Review everything in your personal Notification Inbox. Use the app to get turn-by-turn directions, save favorite locations, and access our comprehensive Resources section where you can purchase permits, find EV charging, and learn about parking programs. Permit Holders: Track parking space availability, save your favorites for easy reference, and add daily parks to your account when you need them. Commuters: Use the map view to find parking based on permit type, get directions to different areas on campus, and plan your route. Campus Visitors: Use the resources view to learn about the parking system, find free parking locations, accessible parking programs, and electric vehicle charging. MGoPark is the must-have tool to make your campus commute go smoothly. The intuitive interface and essential parking insights save you time and let you focus on what really matters at U-M. Whether you're rushing to a lecture, heading to a meeting, or enjoying campus events, MGoPark is your reliable partner in the search for convenient parking. Download MGoPark now and experience the best way to navigate U-M parking!

Screenshots

GravLens33 screens
MGoPark4 screens

Verdict

The call

The clearest difference is review sentiment: GravLens3 at 80% against MGoPark's 25%. GravLens3 also leads on rating (3.7 vs 3.1) and iOS requirement (6.1 vs 15.0). MGoPark's advantage is update cadence (monthly vs every 17 months). On price, ratings volume, 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.

ReceptionRating · Positive reviews · Number of ratings

GravLens3 holds the better App Store score, 3.7 against 3.1. Both are backed by a comparable volume of ratings — 6 and 12 respectively. Written reviews point the same way: 80% of GravLens3's written reviews are positive against 25% of MGoPark's.

UpkeepUpdate frequency

GravLens3 ships an update every 17 months, MGoPark monthly. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

Scorecard4 real differences · 6 level
GravLens3 versus MGoPark: the parameters behind the verdict, then further details
ParameterGravLens3MGoPark
PriceFreeFree
Rating3.7 (6 ratings) — better3.1 (12 ratings)
Positive reviews80.0% of reviews — better25.0% of reviews
Number of ratings612 — better
Update frequencyEvery 17 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.1 — better15.0
Further details — not scored
Size4 MB245 MB
Age rating4+4+
DeveloperEli RykoffThe University of Michigan

Customer experience

GravLens3

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

MGoPark

All ratings10 ratings
Positive50.0%
Neutral20.0%
Negative30.0%
Written reviews4 reviews
Positive25.0%
Neutral50.0%
Negative25.0%

In-app purchases

None

GravLens3

No in-app purchases

None

MGoPark

No in-app purchases

Questions

Is GravLens3 free?
GravLens3 is free to download, with no in-app purchases.
Is MGoPark free?
MGoPark is free to download, with no in-app purchases.
Which has better reviews, GravLens3 or MGoPark?
GravLens3 is rated higher. GravLens3 averages 3.7 out of 5 from 6 ratings, while MGoPark averages 3.1 from 12 ratings.
Do GravLens3 or MGoPark have ads?
Neither GravLens3 nor MGoPark shows ads.
Which is updated more often, GravLens3 or MGoPark?
GravLens3 ships an update every 17 months, and MGoPark monthly. Most recently, GravLens3 was updated on October 14, 2026 and MGoPark on October 20, 2026.

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