GravLens3 vs MGoPark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
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.
- 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
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
GravLens3 ships an update every 17 months, MGoPark monthly. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.
| Parameter | GravLens3 | MGoPark |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (6 ratings) — better | 3.1 (12 ratings) |
| Positive reviews | 80.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 6 | 12 — better |
| Update frequency | Every 17 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 245 MB |
| Age rating | 4+ | 4+ |
| Developer | Eli Rykoff | The University of Michigan |
Customer experience
GravLens3
MGoPark
In-app purchases
GravLens3
No in-app purchases
MGoPark
No in-app purchases








