Comparison

AQUARIUM STUDIO vs ReefKeep

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

Head to head
About

AQUARIUM STUDIO

Features
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โ—‹ RED LED, GREEN LED, BLUE LED, WHITE LED 4 channels can be controlled. โ—‹ You can select the day of the week on which the lamp will operate on a weekly basis. โ—‹ You can set the desired channel value by time zone. โ—‹ You can produce the same effect as nature. (Sunrise effect, sunset effect, moonlight effect) โ—‹ CO2 regulator power can be controlled.

About

ReefKeep

Features
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ReefKeep is a modern, private tracker for saltwater and freshwater aquariums โ€” built for hobbyists who want fast logging and proactive insights, not just prettier graphs. WHAT YOU CAN DO โ€ข Log 8 parameters in under a minute with a clean one-screen entry โ€ข Scan Hanna Checker readings with the camera โ€” no more transcribing numbers โ€ข Track alkalinity, calcium, magnesium, nitrate, phosphate, pH, salinity, temperature and any custom parameter you care about โ€ข See trends as native charts with your target ranges overlaid โ€ข Schedule recurring tasks (water changes, filter swaps, skimmer cleaning) with local reminders โ€ข Record livestock with timelines for spawning, fragging, moves and notes THE INSIGHTS ENGINE Other apps show you numbers. ReefKeep tells you what they mean. โ€ข Trend alerts โ€” "Alkalinity has fallen 8% over your last 5 tests" โ€ข Correlation hints โ€” "Alk and calcium are both dropping. Check your 2-part dosing." โ€ข Stale data warnings โ€” "You haven't tested nitrate in 12 days" โ€ข Smart water-change recommendations based on your actual nitrate trajectory, not a fixed schedule Everything runs on your device. Nothing leaves your phone unless iCloud sync is enabled. ASK THE ON-DEVICE COACH With Apple Intelligence (iPhone 15 Pro and later), tap any insight and get a plain-language explanation grounded in your own tank's readings โ€” all processed on-device, no accounts, no servers. BUILT FOR REEFERS โ€ข Dark mode first โ€” matches how you actually use the app next to a lit tank โ€ข Dual units everywhere: L/gal, ยฐC/ยฐF, ppt/SG, dKH/meq/ppm โ€ข Multiple tanks (Pro) โ€ข iCloud sync across your iPhone and iPad โ€” included, not an upgrade โ€ข Zero ads, zero tracking SDKs, zero account required PRO UNLOCKS โ€ข Unlimited tanks โ€ข Unlimited parameter history โ€ข Insights engine โ€ข CSV export for your records โ€ข Photo galleries โ€ข Apple Watch (coming soon) Monthly and yearly subscriptions, or a one-time lifetime unlock if you prefer to own your tools. ReefKeep is built by a small team that uses it on their own tanks. We're not trying to be everything for every hobby. We're trying to be the tool you open once a week without thinking, and the app that catches a problem before it costs you a fish. The app applies the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AQUARIUM STUDIO3 screens
ReefKeep4 screens

Verdict

The call

The clearest difference is in-app purchases: AQUARIUM STUDIO at none against ReefKeep's 3. AQUARIUM STUDIO also leads on iOS requirement (8.0 vs 17.0). ReefKeep's advantage is update cadence (daily vs fortnightly). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. ReefKeep sells 3 in-app purchases, starting at $4.99 per month. AQUARIUM STUDIO asks for nothing beyond the download.

UpkeepUpdate frequency

AQUARIUM STUDIO ships an update fortnightly, ReefKeep daily. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
AQUARIUM STUDIO versus ReefKeep: the parameters behind the verdict, then further details
ParameterAQUARIUM STUDIOReefKeep
PriceFreeFree
Update frequencyFortnightlyDaily โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS8.0 โ€” better17.0
Further details โ€” not scored
Size3 MB2 MB
Age rating4+4+
Developersooyeong JEONGEnovira AB

In-app purchases

None

AQUARIUM STUDIO

No in-app purchases

3 purchases

ReefKeep

Subscriptions2
  • ReefKeep Pro - monthly7 Days trial$4.991 Month
  • ReefKeep Pro - Yearly7 Days trial$29.991 Year
One-time1
  • ReefKeep Lifetime Subscription$79.99

Questions

Is AQUARIUM STUDIO free?
AQUARIUM STUDIO is free to download, with no in-app purchases.
Is ReefKeep free?
ReefKeep is free to download, with in-app purchases available.
Do AQUARIUM STUDIO or ReefKeep have ads?
Neither AQUARIUM STUDIO nor ReefKeep shows ads.
Which is updated more often, AQUARIUM STUDIO or ReefKeep?
AQUARIUM STUDIO ships an update fortnightly, and ReefKeep daily. Most recently, AQUARIUM STUDIO was updated on October 26, 2026 and ReefKeep on October 24, 2026.

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