Comparison

Reef Notes vs isybee

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

Head to head
About

Reef Notes

Features
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Reef Notes is the logbook for saltwater and reef aquarium keepers - everything you record about your tank in one place, plus AI that actually helps. TRACK YOUR TANK - Water parameters with trend charts: salinity, temperature, pH, KH, calcium, magnesium, ammonia, nitrite, nitrate, phosphate, plus your own custom parameters - Livestock list that warns you about compatibility when you add a new fish or coral - Maintenance schedule with reminders, feeding log, dosing log and running cost - Photo timeline so you can see how the tank has grown AI PHOTO TOOLS - Species ID: point your camera at a fish or coral and find out what it is - Disease diagnosis: photograph a sick fish and narrow down what is wrong - Test-kit reading: photograph your color card and get the number, calibrated to your own kit - Aquascape and lighting advice from a photo of your tank - Dream Tank: describe the tank you want and get an AI concept render KNOW WHAT TO DO - 3,000+ species with water requirements, temperament and reef-safe notes - 180+ care articles, from cycling a new tank to chasing algae - A 30-day cycling plan that tells you what to do each day, from empty tank to first fish - Disease library with human-reviewed treatment plans - Smart water alerts that spot a bad trend before it becomes a problem SHARE YOUR TANK Post a photo to Fish Friends and see what other people are keeping. Every post is reviewed by a person before it appears. YOUR DATA STAYS YOURS Your tanks, tests and photos live in your own private iCloud database and sync across your devices. We never receive them. No ads, no tracking, no third-party analytics. A NOTE ON MEDICATION Reef Notes deliberately never generates dosages or concentrations. Getting those wrong kills livestock. For treatment we point you to the human-reviewed entries in the Disease library and to the instructions on the product you actually own. REEF NOTES PRO The logbook, species reference and articles are free. Reef Notes Pro unlocks the AI photo tools, cloud sync, unlimited photo timeline and more. Reef Notes Pro is 19.99 USD per year and renews automatically. Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews unless it is cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your subscription in Settings on your device. Privacy Policy: https://reef-community.dushibing555.workers.dev/privacy Terms of Use: https://reef-community.dushibing555.workers.dev/terms

About

isybee

Features
Read full description

isybee is a digital beekeeping diary that helps you keep track of every one of your beehives - inspections, observations, treatments, and harvests - all in one place. KEY FEATURES - Daily entries per hive: record queen sightings, larvae, eggs, brood, occupied combs, queen cells, varroa mite checks and treatment, feeding, and hive weight - Works completely offline: enter data in the field with no signal, everything syncs automatically once you're back online - Photos: attach photos to any entry to document the state of a hive over time - Flexible number of hives: set up anywhere from 1 to 60 hives, each with its own name, color marker, category, and queen year - Harvest tracking: log honey harvests per hive or as a total, with a full yearly summary - Change history: every update to a hive's master data (name, marking, queen year, colony strength) is automatically logged, so you always know what changed and when - Multiple family members: everyone can keep their own diary under their own name and PIN, no email address required After a free 30-day trial, isybee costs 0.99 EUR per month, cancel anytime. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Reef Notes4 screens
isybee3 screens

Verdict

The call

The clearest difference is iOS requirement: isybee at 15.0 against Reef Notes's 17.0. On price, update cadence, ads and in-app purchases 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. Reef Notes sells 1 in-app purchase, starting at $19.99 per year and isybee sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Reef Notes ships an update every 6 days, isybee weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
Reef Notes versus isybee: the parameters behind the verdict, then further details
ParameterReef Notesisybee
PriceFreeFree
Update frequencyEvery 6 days โ€” betterWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.015.0 โ€” better
Further details โ€” not scored
Size10 MB13 MB
Age rating4+4+
Developerๅธˆๅ…ต ๆœBernhard Huber

In-app purchases

1 purchases

Reef Notes

Subscriptions1
  • Reef Notes Pro$19.991 Year
1 purchases

isybee

Subscriptions1
  • isybee Monatsabo$0.991 Month

Questions

Is Reef Notes free?
Reef Notes is free to download, with in-app purchases available.
Is isybee free?
isybee is free to download, with in-app purchases available.
Do Reef Notes or isybee have ads?
Neither Reef Notes nor isybee shows ads.
Which is updated more often, Reef Notes or isybee?
Reef Notes ships an update every 6 days, and isybee weekly. Most recently, Reef Notes was updated on November 6, 2026 and isybee on October 31, 2026.

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