Pond Koi vs Thunderstorm Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pond Koi
Create a serene digital pond with swimming koi, customizable backgrounds, and natural soundscapes. Interact with the fish, add flowers, and enjoy a stress-relieving visual and auditory experience.
- Realistic koi fish simulation
- Customizable pond backgrounds
- Interactive fish feeding and teasing
- Variety of natural sound effects
- Flower and leaf arrangement
- Realistic water splashes and ripples
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Enjoy the aesthetic beauty of koi and the playful charm of a realistic lotus pond. The koi pond is filled with beautiful, carefree fish—plump, adorable, and full of life. It’s the perfect place to pause, soothe your weary mind and body, and lift your spirits. You can watch and play with the beautiful fish—feed them, tease them, ripple the water to stir them up, and interact with them in various ways. Admire a variety of flowers and foliage. Use the diverse range of decorative elements—not just for show, but for interactive fun: click and drag to place shapes, and choose between flowing or static special effects. Play with the water; experience incredibly realistic splashes and perfect 3D effects that showcase the true nature of water. Switch between various built-in sound effects (including domestic pets, wildlife, birds, whales, insects, frogs, nature sounds, ambient mixes, flowing water, weather sounds, artificial noises, and more—with a rich and growing library). You can also play your own favorite music. Change the background or use your own photos and images to customize the pond's setting. Mix and match elements—flowers, leaves, feathers, and more—with built-in or custom backgrounds and sounds to create your own unique lotus pond scene. Combine koi with nature sounds and music. Play nature sounds or music individually, or mix them together for a harmonious blend. Enjoy the dual pleasure of listening to music while watching and playing with the beautiful fish. It brings joy and relaxation during your downtime, aiding in rest, sleep, exercise, quiet reflection, meditation, or even a quick, soothing break at work. It is also perfect for children; they can play in this beautiful pond while learning about various adorable animals—let these cute creatures grow alongside your little ones! The animal family keeps growing, as they love your little ones too. Stunningly beautiful, realistic, and fun for all ages—easy to pick up and play instantly, with no complex setup required. Make your setup truly unique—a real head-turner that will be the envy of everyone around you. You can even take screenshots and record videos to show off your luxurious koi pond on social media, displaying just how well you’ve raised these beautiful, chubby, and adorable fish! They’re delightful to look at and fun to play with—but remember, they aren't for eating! Made up your mind? Great! Then don't wait— Download it now and dive in! Come and explore the beautiful, realistic world created just for you! Feel free to contact us anytime if you need anything. Wishing you lots of joy! Contact email: puke365@163.com.
Thunderstorm Simulator
Create a personalized thunderstorm experience with adjustable rain, thunder, and lightning effects. Customize sound volumes, lightning occurrences, and light colors to relax or fall asleep. Includes a sleep timer and options for background nature sounds.
- Adjustable rain sounds and volume
- Customizable thunder and lightning occurrences
- Screen or camera flash lightning effects
- Background nature sounds
- Sleep timer with fade-out
- Keep Awake mode
- Lightning on Demand control
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Summon a thunderstorm on your mobile device. Relax and fall fast asleep to the sounds of rain and thunder. The screen or camera flashes when lightning strikes.* *Defaults to screen for lightning light effects if camera flash is not available. THUNDERSTORMS • Strong Thunderstorm — Heavy rain with frequent lightning and thunder nearby • Normal Thunderstorm — Steady rain with a full range of lightning and thunder • Weak Thunderstorm — Light rain with occasional lightning and thunder far off • Passing Thunderstorms — Rain and lightning intensity changes as the storms pass SETTINGS Rain • Toggle rain sound effects • Change rain audio: Default, Heavy, Steady, Light, On Tin Roof • Change rain volume Lightning/Thunder • Toggle thunder sound effects • Change thunder volume • Change delay lightning (Wireless audio delay offset) • Toggle delay thunder • Toggle lightning light effects • Change lightning output: Camera Flash, Screen • Change lightning transition effects • Change lightning/thunder occurrence: Default, Occasional, Normal, Frequent • Change color and max brightness of lightning light effects (Screen only) Passing Thunderstorms • Change starting storm for Passing Thunderstorms: Weak, Normal, Strong • Change cycle time for Passing Thunderstorms: 15m, 30m, 60m Background Sounds • Toggle background sounds: Birds, Cicadas, Crickets, Frogs • Change background sounds volume General • Keep Awake to prevent your device from going to sleep so lightning effects remain visible • Select a mode to automatically start when the app opens • Choose a time to automatically stop the selected mode • Choose a time to automatically restart the selected mode when the sleep timer ends, enabling a recurring cycle ADDITIONAL FEATURES • Sleep Timer — Set a timer with a gradual audio fade-out. • Turn Screen Black — Adds a black overlay and sets the device to minimum brightness. Use the Screen Brightness Delay setting to compensate for brightness ramp-up on some devices. Set to 0.25–1 second if lightning effects do not reach peak brightness when thunder is loudest. • Lightning on Demand — Start a storm and use the lightning buttons at the bottom of the screen for manual control. • Bluetooth Support — Connect to Bluetooth speakers. Adjust the Delay Lightning setting to offset wireless audio delay. Please contact me at support@thunderstorm.scottdodson.dev if you experience any issues. I'd love to hear your thoughts and appreciate you taking the time to rate and review the app. I want to continue to improve Thunderstorm Simulator and create a great experience for you and future users. Thank you! —Scott Ad-supported version: https://apps.apple.com/us/app/thunderstorm-simulator-w-ads/id1482707561
Screenshots
Verdict
The clearest difference is review sentiment: Thunderstorm Simulator at 100% against Pond Koi's 31%. Thunderstorm Simulator also leads on rating (4.5 vs 3.1) and price ($1.99 vs $2.99). Pond Koi's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (16 vs 2). On ads, in-app purchases, monetization model and chart position 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
Pond Koi costs $2.99 and Thunderstorm Simulator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Thunderstorm Simulator holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: Pond Koi has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 31% of Pond Koi's written reviews are positive against 100% of Thunderstorm Simulator's.
Pond Koi ships an update every 2 months, Thunderstorm Simulator every 4 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.
| Parameter | Pond Koi | Thunderstorm Simulator |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 3.1 (16 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 30.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 — better | 2 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #198 | #193 — better |
| Devices | iPhone, iPad, iPod, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0.0 |
| Further details — not scored | ||
| Size | 228 MB | 72 MB |
| Age rating | 4+ | 12+ |
| Developer | 荣辉 张 | Scott Dodson |
Customer experience
Pond Koi
Thunderstorm Simulator
In-app purchases
Pond Koi
No in-app purchases
Thunderstorm Simulator
No in-app purchases
Questions
Is Pond Koi free?
Is Thunderstorm Simulator free?
Which has better reviews, Pond Koi or Thunderstorm Simulator?
Do Pond Koi or Thunderstorm Simulator have ads?
Which is updated more often, Pond Koi or Thunderstorm Simulator?
Which is more popular, Pond Koi or Thunderstorm Simulator?
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