AQUARIUM STUDIO vs ReefKeep
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
AQUARIUM STUDIO
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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.
ReefKeep
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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 โข Log 8 parameters in under a minute with a clean one-screen entry โข Scan Hanna Checker readings with the camera โ no more transcribing numbers โข Track alkalinity, calcium, magnesium, nitrate, phosphate, pH, salinity, temperature and any custom parameter you care about โข See trends as native charts with your target ranges overlaid โข Schedule recurring tasks (water changes, filter swaps, skimmer cleaning) with local reminders โข Record livestock with timelines for spawning, fragging, moves and notes THE INSIGHTS ENGINE Other apps show you numbers. ReefKeep tells you what they mean. โข Trend alerts โ "Alkalinity has fallen 8% over your last 5 tests" โข Correlation hints โ "Alk and calcium are both dropping. Check your 2-part dosing." โข Stale data warnings โ "You haven't tested nitrate in 12 days" โข 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 โข Dark mode first โ matches how you actually use the app next to a lit tank โข Dual units everywhere: L/gal, ยฐC/ยฐF, ppt/SG, dKH/meq/ppm โข Multiple tanks (Pro) โข iCloud sync across your iPhone and iPad โ included, not an upgrade โข Zero ads, zero tracking SDKs, zero account required PRO UNLOCKS โข Unlimited tanks โข Unlimited parameter history โข Insights engine โข CSV export for your records โข Photo galleries โข 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
Verdict
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
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.
AQUARIUM STUDIO ships an update fortnightly, ReefKeep daily. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | AQUARIUM STUDIO | ReefKeep |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Daily โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 8.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | sooyeong JEONG | Enovira AB |
In-app purchases
AQUARIUM STUDIO
No in-app purchases
ReefKeep
- ReefKeep Pro - monthly7 Days trial$4.991 Month
- ReefKeep Pro - Yearly7 Days trial$29.991 Year
- ReefKeep Lifetime Subscription$79.99
Questions
Is AQUARIUM STUDIO free?
Is ReefKeep free?
Do AQUARIUM STUDIO or ReefKeep have ads?
Which is updated more often, AQUARIUM STUDIO or ReefKeep?
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