Comparison

Who's in Space? vs ReefCtrl

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

Head to head
About

Who's in Space?

Discover the current number of astronauts in orbit and their locations. Tap on an astronaut's name to access more detailed information about their mission.

Highlights
  • Real-time astronaut count
  • Astronaut location tracking
  • Detailed astronaut information
  • Data from Open Notify Astros API
  • User-friendly interface
Features
Read full description

Ever wondered who's in space? Quickly find out how many astronauts are in space and where they are during their time above Earth. Want to learn more? Simply tap an astronaut's name! Data provided by the Open Notify Astros API under the Creative Commons Attribution 3.0 Unported License (http://creativecommons.org/licenses/by/3.0/legalcode). Icon provided by Icons8 under the Attribution-NoDerivs 3.0 Unported License (https://creativecommons.org/licenses/by-nd/3.0/legalcode).

About

ReefCtrl

Manage your reef aquarium with this intelligent platform. Monitor equipment, track water chemistry, and receive smart alerts. It integrates with Neptune Apex controllers and offers AI-powered assistance for hobbyists.

Highlights
  • Neptune Apex integration
  • Smart alerts and notifications
  • Water chemistry tracking
  • Dosing management
  • AI reef assistant
  • Equipment and livestock management
Features
Read full description

Take full control of your reef aquarium with ReefCtrl — the intelligent reef management platform built for serious hobbyists. NEPTUNE APEX INTEGRATION Sync your Apex controller automatically via apex fusion — no port forwarding or tunnels needed. Monitor all outlets live, toggle equipment with safety confirmations, and track power consumption in real time. SMART ALERTS Get push notifications the moment something needs attention — parameter spikes, Apex offline, maintenance due, or dosing containers running low. Dismiss with intelligent cooldowns so you only hear what matters. WATER CHEMISTRY TRACKING Log and chart Alkalinity, Calcium, Magnesium, pH, Salinity, Nitrate, Phosphate and more. Visualise 30-day trends. Import ICP lab results from Triton, ATI, or Fauna Marin with AI-powered analysis. DOSING MANAGEMENT Track Fauna Marin Balling, ESV B-Ionic, Red Sea Reef Foundation, Kalkwasser and more. Monitor Neptune DDR container levels live. Log doses with one tap — no typing required. AI REEF ASSISTANT Chat with AI about your tank. Generate Neptune Apex programming code in plain English. Get personalised recommendations based on your actual parameters. EQUIPMENT & LIVESTOCK Manage your full equipment list with maintenance schedules and reminders. Track your fish and coral with species-specific care notes. ReefCtrl works with or without a Neptune Apex. Start with manual parameter logging and add automation as you grow.

Screenshots

Who's in Space?4 screens
ReefCtrl4 screens

Verdict

The call

The clearest difference is rating: Who's in Space? at 3.0 against ReefCtrl's 1.5. ReefCtrl's advantage is update cadence (every 9 days vs every 4 months). On price, review sentiment, ratings volume and ads 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

Who's in Space? holds the better App Store score, 3.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Who's in Space? ships an update every 4 months, ReefCtrl every 9 days. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
Who's in Space? versus ReefCtrl: the parameters behind the verdict, then further details
ParameterWho's in Space?ReefCtrl
PriceFreeFree
Rating3.0 (2 ratings) — better1.5 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size0 MB3 MB
Age rating4+4+
DeveloperCameron BernhardtJayanth Vignesh Ramachandran

Customer experience

Who's in Space?

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ReefCtrl

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Who's in Space?

No in-app purchases

None

ReefCtrl

No in-app purchases

Questions

Is Who's in Space? free?
Who's in Space? is free to download, with no in-app purchases.
Is ReefCtrl free?
ReefCtrl is free to download, with no in-app purchases.
Which has better reviews, Who's in Space? or ReefCtrl?
Who's in Space? is rated higher. Who's in Space? averages 3.0 out of 5 from 2 ratings, while ReefCtrl averages 1.5 from 2 ratings.
Do Who's in Space? or ReefCtrl have ads?
Neither Who's in Space? nor ReefCtrl shows ads.
Which is updated more often, Who's in Space? or ReefCtrl?
Who's in Space? ships an update every 4 months, and ReefCtrl every 9 days. Most recently, Who's in Space? was updated on October 26, 2026 and ReefCtrl on October 21, 2026.

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