KoiApp vs PondManager
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
KoiApp
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KoiApp is the complete app for koi keepers and breeders โ track every fish, care for your pond, and control it all from your phone. Part of the KoiSoft system. Built for hobbyists and breeders alike, KoiApp brings your whole koi life into one place. โข Studio ID cards โ turn ordinary photos into stunning AI-generated studio portraits, each with its own digital certificate โข Growth tracking โ log length and weight over time and follow every koi's growth curve โข Measure from a photo โ mark a known reference and get an exact length without handling the fish โข Scan a fish โ AI identifies species and variety and estimates size, then carries the fish straight into a KoiDoctor conversation โข Water tests โ log temperature, pH, ammonia, nitrite, nitrate, KH and GH in under a minute, photograph the test strip, and see every value charted over time โข KoiDoctor โ ask about health, symptoms and seasonal care, or have it read a water test: it weighs pH against KH, nitrite against temperature and stocking, and tells you what the situation actually is โข Feeding โ plans that follow water temperature, fish size and the food you use โข Breeding โ KoiMix weighs a pairing and shows the likely offspring; build a family tree with parents and offspring โข Marketplace โ discover koi for sale from breeders, or list your own โข Ownership transfer โ hand a koi to its new owner with the full history: photos, measurements, logs and water tests โข Smart hardware โ connect KoiBox & KoiPlugg devices to monitor and control pump, UV, heating, lights, feeding and water level Free to start. Upgrade to Premium for unlimited logging, 20 studio images per month, multi-device control and more. Terms of Use (EULA): https://koisoft.eu/terms Privacy Policy: https://koisoft.eu/privacy
PondManager
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PondManager is the app for every koi hobbyist. Track your water values, follow your koi's growth and see how your pond is doing at a glance. TRACK WATER VALUES Log all your measurements: ammonia, nitrite, nitrate, pH, KH, GH, temperature, TDS and more. Review them in a clear chart with a dual y-axis, so even widely differing values stay easy to read. Enter several values at once. FOLLOW YOUR KOI Give every koi its own profile with a photo, variety, breeder and dealer. Add length measurements with a photo and see the growth in a curve. Compare two measurements side by side and drag through time to watch your koi develop. MANAGE YOUR PONDS Manage multiple ponds, each with dimensions, volume, filter details and residents. Keep a timeline of everything you do to your pond. ALWAYS AN OVERVIEW The dashboard shows your key values, your koi and your recent activity right away. So you always know how your pond is doing. PondManager works with your PondManager account (pondmanager.nl). After signing up you can try the app free for 14 days.
Screenshots
Verdict
The clearest difference is in-app purchases: PondManager at none against KoiApp's 4. PondManager also leads on update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement 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. KoiApp sells 4 in-app purchases, starting at $4.99 per month. PondManager asks for nothing beyond the download.
KoiApp ships an update every 2 months, PondManager weekly. Both last shipped on October 31, 2026.
| Parameter | KoiApp | PondManager |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.0 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 26 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Bertelsen | Baspro IT |
In-app purchases
KoiApp
- KoiSoft Premium$4.991 Month
- Extra storage$7.991 Year
- KoiSoft Premium$49.991 Year
- Studio images ร20$9.99
PondManager
No in-app purchases







