Comparison

RYUKIN vs ColoredQuestions Lite

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

Head to head
About

RYUKIN

Experience the serene beauty of goldfish swimming in a customizable virtual aquarium. Interact with the fish, adjust tank settings, and enjoy soothing visuals and sounds. Perfect for relaxation or a calming presence.

Highlights
  • Interactive goldfish that respond to touch
  • Customizable tank shape and background
  • Soothing water sounds and visuals
  • Cat & Baby Mode for safe interaction
  • Sleep timer for bedtime use
  • Play your own music
  • Clock and date display
Features
Read full description

~ Gracefully Fluttering Goldfish ~ Goldfish glide gracefully through crystal-clear water, their fins fluttering gently as they swim. Their charming gestures and soft, delicate fin movements have been carefully recreated. Enjoy the beauty of goldfish anytime, anywhere — without the need for water changes or feeding. App Highlights - Fish respond to your touch and follow your finger - Customize tank shape, background color, and floating objects - Soothing water sounds and clear, refreshing visuals - "Cat & Baby Mode" for safe play with kittens and toddlers - Sleep timer for relaxing bedtime use - Play your favorite music while watching the aquarium - Clock and date display - White and black goldfish included; colorful and themed fish available via in-app purchase Settings & Customization - Camera options (Free position / Follow fish / Auto-rotation) - Screen orientation - Tilt sensitivity - Sleep timer - UI size - Toggle water surface, bubbles, and other effects - Adjust brightness, saturation, contrast, and color tone - Quality settings (resolution and various effects) - Volume settings (water sounds, bubble sounds) - Clock & date options (font, position, size) Other Features - Fish, objects, and the water surface respond to touch and device tilt - Fish may whimsically swim toward your finger - Tap too much and the fish may faint! - Feed the fish - Adjust the size of fish and objects - Display up to six fish at once ‥∴ Bringing the Allure of Goldfish Closer ∴‥ This app was born from a childhood dream of recreating goldfish through programming. Fifteen years after the release of the original app *Wa Kingyo*, countless refinements have been made to capture the graceful and charming nature of these fish. From the gentle movement of their fins to the way they chase and munch on food, experience the beauty and warmth that goldfish bring. News and Support X: @m_hakozaki TikTok: @m_hakozaki Instagram: @masataka.hakozaki

About

ColoredQuestions Lite

Features
Read full description

With this app you can answer and set up questionnaires. Each question consists of a sentence or even just a single word, as well as an optional picture and soundtrack. You can add a picture using your camera or search for one on the Internet. You can also record the soundtrack or select it from the music library. And you can add a colored frame! The questionaire is presented in a table or a grid. Touching the question toggles between the possible answers, a long-press will open a menu to select the answer. Under Setup new questionnaires can be composed within the app and existing ones can be modified. Both questionnaires and their answers can be exchanged between users via QR codes or by messenging. When including answers it is possible to restrict access to only show the degree of agreement.

Screenshots

RYUKIN4 screens
ColoredQuestions Lite4 screens

Verdict

The call

The clearest difference is price: ColoredQuestions Lite at Free against RYUKIN's $3.49. ColoredQuestions Lite also leads on in-app purchases (none vs 38) and update cadence (daily vs weekly). On 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

ColoredQuestions Lite is free to download; RYUKIN costs $3.49 up front. RYUKIN sells 35 one-off in-app purchases. ColoredQuestions Lite asks for nothing beyond the download.

UpkeepUpdate frequency

RYUKIN ships an update weekly, ColoredQuestions Lite daily. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
RYUKIN versus ColoredQuestions Lite: the parameters behind the verdict, then further details
ParameterRYUKINColoredQuestions Lite
Price$3.49Free — better
Rating4.9 (62 ratings) — better—
Positive reviews94.0% of reviews—
Number of ratings62 — better—
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size227 MB26 MB
Age rating4+4+
DeveloperMasataka HakozakiSven Bergmann

Bugs and requests

RYUKIN

Reported bugs

1 issue
  • Occasional crashing on high-end devices

Requested features

5 requests
  • Ability to change fish colors
  • Add more fish species (e.g. bettas, tetras)
  • Implement fish breeding/growth mode
  • Allow customizing fish placement in tank
  • Add desktop/widget mode for always-on display

ColoredQuestions Lite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

35 purchases

RYUKIN

One-time35
  • WIREFRAME RAINBOW$0.99
  • ROBO FISH 02$1.99
  • ROBO FISH 04$1.99
Show 32 more
  • ROBO FISH 06$1.99
  • GHOST BRIDE$1.99
  • BAT FISH$1.99
  • CALICO ORANGE/WHITE/BLACK$1.99
  • BLACK WHITE KITTY FISH$1.99
  • GHOST TRANSLUCENT$1.99
  • BLACK KITTY FISH$1.99
  • WHITE KITTY FISH$1.99
  • ROBO FISH 03$1.99
  • GHOST BLACK$1.99
  • ROBO FISH 01$1.99
  • ORANGE & WHITE KITTY FISH$1.99
  • RED RYUKIN$1.99
  • RED-WHITE RYUKIN$1.99
  • CALICO RED/WHITE/BLACK$1.99
  • ORANGE/WHITE$1.99
  • CALICO RED/GRAY/BLACK$1.99
  • YELLOW GOLD RYUKIN$1.99
  • RED CAP ORANDA$1.99
  • RED/WHITE II$1.99
  • LIONHEAD ORANGE/WHITE/BLACK$1.99
  • GHOST LUMINOUS$1.99
  • BLACK RYUKIN$1.99
  • CALICO KITTY FISH$1.99
  • GRAY WHITE KITTY FISH$1.99
  • WHITE VAMPIRE$1.99
  • BLACK VAMPIRE$1.99
  • BLACK WITCH$1.99
  • WHITE WITCH$1.99
  • ZOMBIE FISH$1.99
  • SKELETON FISH$1.99
  • PANDA TELESCOPE$1.99
None

ColoredQuestions Lite

No in-app purchases

Questions

Is RYUKIN free?
RYUKIN costs $3.49, and also offers in-app purchases.
Is ColoredQuestions Lite free?
ColoredQuestions Lite is free to download, with no in-app purchases.
Do RYUKIN or ColoredQuestions Lite have ads?
Neither RYUKIN nor ColoredQuestions Lite shows ads.
Which is updated more often, RYUKIN or ColoredQuestions Lite?
RYUKIN ships an update weekly, and ColoredQuestions Lite daily. Most recently, RYUKIN was updated on October 24, 2026 and ColoredQuestions Lite on October 14, 2026.

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