Comparison

Ad Astra vs Onseol

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

Head to head
About

Ad Astra

This app transforms your goals into a personal universe where each aspiration becomes a unique planet. Track your progress through immersive visuals and celebrate achievements as you reach new celestial bodies. Build your own universe and stay motivated on your journey.

Highlights
  • Create a personal universe of goals
  • Visualize goals as unique planets
  • Track progress with milestones
  • Celebrate achievements and share progress
  • Immersive visual journey tracking
Features
Read full description

Ad Astra is a bucket-list app that turns your goals into stars. Each goal becomes a unique planet, and every step you take brings you closer to reaching it. Build your own universe, stay motivated, and track your journey with immersive visuals. Features β€’ Create your personal universe Each bucket-list item generates a beautifully designed planet. β€’ Track your progress Set milestones, and watch your journey unfold. β€’ Celebrate your achievements Reach new planets and share your completed universe with others. Your goals are not just tasks. They are stars waiting to be reached. Start your journeyβ€”Ad Astra.

About

Onseol

Features
Read full description

Onseol counts the days that matter β€” no account, no sign-up, no ads. Your D-Days live on your phone. Onseol has no server and keeps no copy. β€’ Korean-style D-Days β€” D-100, D-7, D-DAY, and days-since counted from day 1. 100-day and yearly milestones, automatically. β€’ Lunar (음λ ₯) birthdays & memorials β€” Onseol finds the solar date for you each year. β€’ Home & Lock Screen widgets (iOS 16 or later) β€” automatic, or one D-Day of your choice per widget (iOS 17 or later). β€’ Reminders at D-7, D-1 and D-DAY, and on day-count milestones β€” all scheduled on your phone. A small card in the app on milestone days. β€’ Share a D-Day as a card, with a link that opens it in a friend's Onseol, ready to add. β€’ Back up your D-Days and their photos to a file you keep, and restore them on a new phone. ONSEOL PRO β€” one purchase, forever. Not a subscription. β€’ Unlimited D-Days and all 16 colors β€’ Your photo on any D-Day β€” on its card, and in the Photo widget (iOS 17 or later) β€’ Three more widget designs: Ring, Photo and Minimal (iOS 17 or later) β€’ Count it your way β€” in years, months and days, in weeks, or in hours β€’ Every milestone with its date, from day 100 to day 10,000 β€’ Ink and Photo share cards Free: five D-Days, the classic widget in every size, reminders, lunar dates, milestone cards, the Paper share card and backup. Onseol Pro supports Family Sharing.

Screenshots

Ad Astra4 screens
Onseol3 screens

Verdict

The call

The clearest difference is price: Onseol at Free against Ad Astra's $3.99. Ad Astra's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 3 weeks). On ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Onseol is free to download; Ad Astra costs $3.99 up front. Onseol sells 1 one-off in-app purchase. Ad Astra asks for nothing beyond the download.

UpkeepUpdate frequency

Ad Astra ships an update every 4 days, Onseol every 3 weeks. Both last shipped on November 5, 2026.

Scorecard4 real differences Β· 4 level
Ad Astra versus Onseol: the parameters behind the verdict, then further details
ParameterAd AstraOnseol
Price$3.99Free β€” better
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 4 days β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationPaidβ€”
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 β€” better15.0
Further details β€” not scored
Size80 MB28 MB
Age rating4+4+
Developerhyoungmin leeMustafa Salim Erek

In-app purchases

None

Ad Astra

No in-app purchases

1 purchases

Onseol

One-time1
  • Onseol Pro$9.99

Questions

Is Ad Astra free?
Ad Astra costs $3.99, with no in-app purchases.
Is Onseol free?
Onseol is free to download, with in-app purchases available.
Do Ad Astra or Onseol have ads?
Neither Ad Astra nor Onseol shows ads.
Which is updated more often, Ad Astra or Onseol?
Ad Astra ships an update every 4 days, and Onseol every 3 weeks. Most recently, Ad Astra was updated on November 5, 2026 and Onseol on November 5, 2026.

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