Comparison

Gravitational Wave Events vs DeepVoid

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

Head to head
About

Gravitational Wave Events

Stay updated on gravitational wave events with real-time alerts from the LIGO/Virgo/KAGRA Collaboration. Explore event locations on an interactive sky map and access educational resources about gravitational waves and observatories.

Highlights
  • Real-time GCN/LVK alerts
  • Interactive sky map
  • Event database (O1, O2, O3)
  • GCN Circulars
  • Public message board
  • Educational links
Features
Read full description

Receive alerts of Gravitational Wave Events from the LIGO/Virgo/KAGRA Collaboration (LVK) on your iPhone. This is an app for both the LIGO/Virgo/KAGRA Community and the general public. It provides low latency alerts using the Open Public Alerts currently being deployed by the Gamma-ray Coordinates Network (GCN) through GCN/LVK Notices (https://emfollow.docs.ligo.org/userguide/). To receive alerts using the app just select the category of alerts you wish to receive - it's that simple! The O4 observing run ended in November 2025. Intermediate Run 1 (IR1) is expected to start in late September, 2026. The app will download all IR1 events and counterparts as they are reported through a GCN Notice in addition to any related GCN Circulars. The app database is pre-populated with selected Notices and Circulars from all previous O1, O2, O3 and O4 events. The app retains Notices for one Mock Event reported through GCN for testing purposes. (For information on LIGO/Virgo/KAGRA Collaboration GCN Notices see: https://gcn.gsfc.nasa.gov/lvc.html .) Includes an interactive sky map showing the location of each event. The app also has a public Message exchange bulletin board and some interesting Links. The Links provide information on Gravitational Waves and the LIGO and Virgo observatories.

About

DeepVoid

Features
Read full description

Explore the universe with DeepVoid, a clear and immersive guide to space science. Track the International Space Station in real time with its current position, altitude, and velocity. Follow upcoming rocket launches with countdowns, mission details, launch providers, and locations. Explore near-Earth asteroids through a focused catalog with estimated size, closest approach distance, and risk classification. Then go deeper with beautifully presented science stories about black holes, gravity, the speed of light, gravitational waves, and the expanding universe. DeepVoid brings live space data and timeless cosmic questions together in one calm, visual experience. Discover something new every time you look up.

Screenshots

Gravitational Wave Events4 screens
DeepVoid4 screens

Verdict

The call

The clearest difference is ads: Gravitational Wave Events at none against DeepVoid's shown. Gravitational Wave Events also leads on iOS requirement (12.0 vs 16.4). DeepVoid's advantage is update cadence (weekly vs monthly). 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.

UpkeepUpdate frequency

Gravitational Wave Events ships an update monthly, DeepVoid weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Gravitational Wave Events versus DeepVoid: the parameters behind the verdict, then further details
ParameterGravitational Wave EventsDeepVoid
PriceFreeFree
Rating4.8 (133 ratings) — better—
Positive reviews89.8% of reviews—
Number of ratings133 — better—
Update frequencyMonthlyWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.4
Further details — not scored
Size7 MB86 MB
Age rating4+4+
DeveloperPeter KramerDouglas Nunes de Mattos

Bugs and requests

Gravitational Wave Events

Reported bugs

1 issue
  • Crashes on startup (iOS 14.7.1)

Requested features

13 requests
  • Searchable database (e.g., Vera Rubin circulars)
  • More explanation of jargon and graphs
  • Ability to download notification sound
  • Indication of masses of involved objects
  • Playback of real sound and frequency wave
Show 8 more
  • Link to everyday language explanations of events
  • UI/screen scaling/link info tweaks
  • Delete/hide event by swiping
  • Mark different events by colors
  • Personalized filter for specific event types (e.g., BNS only)
  • Add delete function to each event
  • Link user event comments to related events
  • Improved navigation and visual design

DeepVoid

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Gravitational Wave Events

No in-app purchases

None

DeepVoid

No in-app purchases

Questions

Is Gravitational Wave Events free?
Gravitational Wave Events is free to download, with no in-app purchases.
Is DeepVoid free?
DeepVoid is free to download, with no in-app purchases.
Do Gravitational Wave Events or DeepVoid have ads?
DeepVoid shows ads; Gravitational Wave Events does not.
Which is updated more often, Gravitational Wave Events or DeepVoid?
Gravitational Wave Events ships an update monthly, and DeepVoid weekly. Most recently, Gravitational Wave Events was updated on November 2, 2026 and DeepVoid on October 31, 2026.

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