Comparison

Sound Sky vs OpenLock

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

Head to head
About

Sound Sky

Immerse yourself in a unique rhythm game designed for stress relief and musical exploration. Master tempo and timing with meditative soundtracks and mesmerizing visuals across over 50 levels. Perfect for music enthusiasts and aspiring percussionists alike.

Highlights
  • Meditative soundtracks
  • Unique finger drumming experience
  • Over 50 levels with original music
  • Mesmerizing visuals
  • Accurate scoring for tempo and timing
  • Explore a universe of planets with unique songs
Features
Read full description

Tap along to calm music. Every hit plays a drum. 100+ planets, each one an original song. The first 20 planets are free, and a one-time purchase adds the rest. No subscription. No pressure You can't fail a song. Miss a note and the song keeps going. There is no energy meter and no countdown. One button starts a song, and there is no difficulty to pick. It is still a challenge if you want one. The fast songs keep your thumbs busy, and five stars takes a nearly flawless run. How it plays You start with two ships, one for each thumb. Later songs add a third ship, then a fourth. Notes fly toward the ships and you tap as each one arrives. The tap is the drum hit: a kick, a snare, a tom, a hi-hat or a crash. The song plays, and you play its percussion part over the top. Every hit is judged Perfect, Early or Late. Perfect hits in a row build a combo, and the combo raises your score. Each song gives you up to 5 stars. The first planet teaches you the drumming. Odyssey Odyssey is the main mode: 100+ planets in a fixed order, one song per planet. Stars open the next planet. Each planet needs a few more than the one before, and you earn them by playing. The first 20 planets are free. Infinity and Saved Levels Infinity is the endless mode. It opens when you have 15 stars, and it stays free. Every level is a new remix made from a library of 675 loops. When you get a level you like, save it from the end screen. It goes in your Saved list so you can play it again. The music All of the music is original and was made for Sound Sky. It is instrumental and chill, and the slower songs get meditative. Music and sound by Craig Barnes. Use headphones if you have them. What is free and what you pay for Free: - The first 20 Odyssey planets - Infinity - 3 Saved Levels A one-time purchase: - Every Odyssey planet after the first 20 - Unlimited Saved Levels That is the only purchase in the game. No subscription. If you bought the one-time pack in an earlier version, you already own the full game. Tap Restore purchase on the purchase screen if it does not show up. Good to know - Audio Delay is a slider in Settings with a metronome. Use it to line your taps up with your headphones or speakers. - Your progress, including stars and Saved Levels, comes back after a reinstall when you are signed in to iCloud. - Plays on iPhone and iPad.

About

OpenLock

Features
Read full description

Get ready for non-stop action! In this fast-paced, casual game, you'll control a spinning arrow and blast targets that appear in random locations. Tap with precision to shatter them before they disappear, racking up points and unlocking achievements along the way. Master the challenge, customize your arrow with unique machines and power-ups, and see how far you can climb the endless score ladder. Perfect for quick bursts of excitement, Arrow Frenzy is the ultimate casual gamer's dream! Tap to smash targets as they pop up, conquer your high score, and unlock achievements. Experience endless fun with our store, which includes various gaming machines. Do you remember the casino jackpot open-lock? We will bring more than an open-lock. We re-made it infinity. That challenges your hand speed skills. This arcade game is better than tangled new games, you can get coin and buy power-ups and new game machines from in game store and get 1 or 2 more life and use them in your strategy to get better score. Only elites with more skills can get a good score. Play with your friends and, with more practice, show your friend who is the better and smarter. The development of genius and thinking better than artificial intelligence starts from here, In a world surrounded by AI, play an offline game in arcade style and train your brain to do more. OpenLock-Infinity

Screenshots

Sound Sky4 screens
OpenLock4 screens

Verdict

The call

The clearest difference is in-app purchases: OpenLock at none against Sound Sky's 4. OpenLock also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Sound Sky's advantage is update cadence (every 2 weeks vs every 8 months). On price 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. Sound Sky sells 4 one-off in-app purchases. OpenLock asks for nothing beyond the download.

UpkeepUpdate frequency

Sound Sky ships an update every 2 weeks, OpenLock every 8 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Sound Sky versus OpenLock: the parameters behind the verdict, then further details
ParameterSound SkyOpenLock
PriceFreeFree
Rating4.8 (341 ratings) — better—
Positive reviews91.5% of reviews—
Number of ratings341 — better—
Update frequencyEvery 2 weeks — betterEvery 8 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size158 MB78 MB
Age rating4+4+
DeveloperHIGHKEY GamesKıyan SISAKHTI

Bugs and requests

Sound Sky

Reported bugs

5 issues
  • Download fails or takes excessive time
  • Music and beats out of sync
  • Tap inputs not registering properly
  • Phone overheating during extended play
  • Inconsistent rhythm detection

Requested features

8 requests
  • Add more levels and content
  • Include recognizable and popular songs
  • Release official soundtrack
  • Allow players to select different music/sounds
  • Add diverse note combinations without disappearing mechanic
Show 3 more
  • Faster energy refill rate
  • Simplify graphics to reduce battery usage
  • Add more contemporary hit songs across genres

OpenLock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Sound Sky

One-time4
  • Pack of 3 Soundstones$0.99
  • Half Energy Discount (1 week)$0.99
  • Half Energy Discount (2 weeks)$2.99
Show 1 more
  • Founder's Pack$4.99
None

OpenLock

No in-app purchases

Questions

Is Sound Sky free?
Sound Sky is free to download, with in-app purchases available.
Is OpenLock free?
OpenLock is free to download, with no in-app purchases.
Do Sound Sky or OpenLock have ads?
Sound Sky shows ads; OpenLock does not.
Which is updated more often, Sound Sky or OpenLock?
Sound Sky ships an update every 2 weeks, and OpenLock every 8 months. Most recently, Sound Sky was updated on October 29, 2026 and OpenLock on October 30, 2026.

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