Comparison

Cygnus Astro vs Sleep Save

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

Head to head
About

Cygnus Astro

Control your astrophotography equipment remotely from your mobile device. This app provides a touch-friendly interface to connect, monitor, and manage your N.I.N.A. software and connected gear, simplifying your setup in the field.

Highlights
  • Remote equipment control
  • N.I.N.A. software integration
  • Mobile touch interface
  • Real-time exposure preview
  • Open-source and free
Features
Read full description

Cygnus Astro Get ready to do astrophotography from your mobile phone! Cygnus Astro enables astrophotographers to use a mobile touch-friendly interface to control their equipment from N.I.N.A. software. No matter if you have a laptop, or a mini PC, you can replace that complex UI with a mobile app. When in the field, you're able to connect, monitor, and control all your astrophotography equipment without worrying about a desktop interface. Turn your PC on, and forget about it! Key features: - Connect your equipment (mount, camera, electronic focuser, etc.) using a simple button - Launch and monitor your advance sequence - Perform your Three-Point Polar Alignment without having to hold your laptop - Preview your exposures in real-time - Fully open-source. This app is, and will aways be free Cygnus Astro uses N.I.N.A. PC software and the N.I.N.A. Advanced API plugin to communicate with your PC. This app is not a replacement for N.I.N.A. or your PC.

About

Sleep Save

Features
Read full description

You fall asleep watching TV. It plays for six more hours. Sleep-Save listens for the moment you actually drift off — then pauses your show, dims the lights, and lets the house go quiet. It isn't a timer. It doesn't guess. WAKE UP WHERE YOU LEFT OFF Drift off mid-episode and Sleep-Save pauses instead of barrelling through four more. Your show is waiting exactly where you left it. Free, forever. NO MORE 3AM WAKE-UPS No blaring dialogue at three in the morning. No hunting for the remote in the dark. No lying there deciding whether it is worth getting up. YOUR WHOLE BEDROOM, HANDLED Connect your lights, plugs and thermostat and Sleep-Save takes care of the room, not just the screen. STOP PAYING FOR HOURS YOU ARE NOT WATCHING A 65-inch TV left on five hours a night costs about $32 a year in electricity. Heating and cooling is the bigger prize: nearly half the average household energy bill. SleepSave Premium — Subscription Details Individual — $4.99 per month, auto-renewing monthly subscription. Household — $12.99 per month, auto-renewing monthly subscription, shared with your Apple Family Sharing group (up to six people). New subscribers are eligible for a 1-week free trial. Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account Settings after purchase. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Additional Terms of Service: https://sleep-save.com/terms-of-service/ Privacy Policy: https://sleep-save.com/privacy-policy/

Screenshots

Cygnus Astro4 screens
Sleep Save4 screens

Verdict

The call

The clearest difference is in-app purchases: Cygnus Astro at none against Sleep Save's 2. Cygnus Astro also leads on update cadence (every 5 days vs every 6 weeks) and iOS requirement (15.1 vs 26.1). On price, ads 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. Sleep Save sells 2 in-app purchases, starting at $4.99 per month. Cygnus Astro asks for nothing beyond the download.

UpkeepUpdate frequency

Cygnus Astro ships an update every 5 days, Sleep Save every 6 weeks. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Cygnus Astro versus Sleep Save: the parameters behind the verdict, then further details
ParameterCygnus AstroSleep Save
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.1 — better26.1
Further details — not scored
Size32 MB24 MB
Age rating4+4+
DeveloperChristopher VenturaSleep Save LLC

In-app purchases

None

Cygnus Astro

No in-app purchases

2 purchases

Sleep Save

Subscriptions2
  • Individual7 Days trial$4.991 Month
  • Household7 Days trial$12.991 Month

Questions

Is Cygnus Astro free?
Cygnus Astro is free to download, with no in-app purchases.
Is Sleep Save free?
Sleep Save is free to download, with in-app purchases available.
Do Cygnus Astro or Sleep Save have ads?
Neither Cygnus Astro nor Sleep Save shows ads.
Which is updated more often, Cygnus Astro or Sleep Save?
Cygnus Astro ships an update every 5 days, and Sleep Save every 6 weeks. Most recently, Cygnus Astro was updated on October 20, 2026 and Sleep Save on October 11, 2026.

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