Comparison

Aqua Master Tools vs DrainMaster Plus

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

Head to head
About

Aqua Master Tools

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Designed for water quality professionals, the app supports a range of pH and EC controllers and monitors. Remotely access live data, review historical trends, and adjust process setpoints all from your smartphone or tablet. Stay connected. Stay in control.

About

DrainMaster Plus

Features
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DrainMaster Plus shows you whether your plants get the right water and feed. Measure what goes into the pot and what drains out, and the app warns you early when salt builds up or the pH drifts. Every plant gets its own journal. Track electrical conductivity (EC), pH and temperature of your feed (nutrient solution) and of the water that drains out (runoff), in µS/cm, mS/cm or PPM (TDS). Calculators for humidity (VPD chart), light (DLI) and EC to PPM, a nutrient calculator for mixing and a grow journal (grow log, plant diary) with photos. For soil, coco coir, hydroponics, houseplants and indoor growing. Live readings over Bluetooth from compatible meters (pH meter, EC meter, pH pen). MEASURE • Guided measurement in a few steps or quick measurement • EC, pH and temperature for input and runoff • Bluetooth: live values directly from Apera meters (e.g. PC60-Z, PH60-Z, EC60-Z) • Display in µS/cm, mS/cm or PPM UNDERSTAND • Recommendations per plant to spot overfeeding, salt buildup and pH problems early • History and charts for every plant • Timeline with germination, stage changes, photos and notes • AI assistant: ask questions about your plant, the answers take its measurements into account (uses coins) TOOLS • VPD, DLI and EC/PPM calculators • Nutrient mixer COMMUNITY • Blog with posts and comments, translated automatically • Report content, block users, moderation with the option to appeal YOUR DATA • Works offline too, measurements and plants are stored on your device • Backup export and import • Optional DrainMaster Cloud: sync and automatic backup on up to 5 devices, 5 GB of storage for photos and 60 coins per month for AI features In 10 languages: German, English, French, Italian, Dutch, Polish, Russian, Spanish, Turkish and Arabic. Suitable for houseplants, hobby gardens, hydroponics and small professional setups. DRAINMASTER CLOUD (SUBSCRIPTION) DrainMaster Cloud is a monthly subscription that renews automatically. The price is shown in the app before purchase. Payment is charged to your Apple Account. The subscription renews unless it is cancelled in your account settings at least 24 hours before the end of the current period. Terms of Use: Apple's standard Terms of Use (EULA) apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://drain-master.de/datenschutz/

Screenshots

Aqua Master Tools4 screens
DrainMaster Plus4 screens

Verdict

The call

The clearest difference is in-app purchases: Aqua Master Tools at none against DrainMaster Plus's 5. Aqua Master Tools also leads on iOS requirement (13.6 vs 16.4). DrainMaster Plus's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DrainMaster Plus sells 5 in-app purchases, starting at $3.99 per month. Aqua Master Tools asks for nothing beyond the download.

UpkeepUpdate frequency

Aqua Master Tools ships an update every 2 months, DrainMaster Plus every 2 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 3 level
Aqua Master Tools versus DrainMaster Plus: the parameters behind the verdict, then further details
ParameterAqua Master ToolsDrainMaster Plus
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.6 — better16.4
Further details — not scored
Size12 MB82 MB
Age rating17+12+
DeveloperPim van Seventerkobosil.me Development

In-app purchases

None

Aqua Master Tools

No in-app purchases

5 purchases

DrainMaster Plus

Subscriptions1
  • DrainMaster Cloud Monthly$3.991 Month
One-time4
  • 50 Credits$1.99
  • 150 Coins$3.99
  • 400 Coins$8.99
Show 1 more
  • 1000 Coins$17.99

Questions

Is Aqua Master Tools free?
Aqua Master Tools is free to download, with no in-app purchases.
Is DrainMaster Plus free?
DrainMaster Plus is free to download, with in-app purchases available.
Do Aqua Master Tools or DrainMaster Plus have ads?
Neither Aqua Master Tools nor DrainMaster Plus shows ads.
Which is updated more often, Aqua Master Tools or DrainMaster Plus?
Aqua Master Tools ships an update every 2 months, and DrainMaster Plus every 2 weeks. Most recently, Aqua Master Tools was updated on October 27, 2026 and DrainMaster Plus on October 30, 2026.

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