Track veg and flower days from seed or clone, dial in pH & PPM runoff drift, compute exact elemental NPK mg/ppm inputs, map multi-generation cannabis pedigrees, and log live room VPD via Govee Bluetooth sensors—100% privately on your device.
Whether you run hand-watered living soil, high-frequency coco drain-to-waste, or recirculating RDWC reservoirs, PlantMaxer tracks every input and runoff reading.
Log water volume, pH in/out, and PPM in/out with automatic drift calculation (Δ) so you spot root-zone salt buildup or pH crashes before leaves show deficiency. Enter each bottle or salt's guaranteed analysis % and density once—every feed computes the exact milligrams and parts per million delivered.
Flip a plant to flowering with one toggle. PlantMaxer records the flip date, counts Veg days and Flower days separately, estimates harvest windows from strain flowering weeks, and plays back full-screen photo timelapses stamped with Day 49 · Flower day 21.
Build custom nutrient schedules for soil, coco, or hydro. When you tap Log Today's Feed, PlantMaxer checks the plant's current veg or flower week and pre-fills every bottle's dose automatically—or tap Copy from Last Feed in one second.
Assign hydro plants to a shared Reservoir or log a whole-room feed in your Flower Tent. PlantMaxer syncs the input feed (water, pH in, PPM in, nutrients) to every plant on that reservoir or room while keeping per-plant runoff pH/PPM readings independent.
Map multi-generation cannabis family trees, prevent pedigree loops automatically, and organize hundreds of seed packs and home crosses down to the exact box and grid slot.
Record Indica, Indica-dominant, Hybrid, Sativa-dominant, or Sativa cultivars along with breeder, flowering weeks, 1–5 star ratings, and filial generations (P1, F1–F6, S1, S2, BX1–BX3, IBL, Landrace, Clone-only). Pick Mother (♀) and Father (♂) strains from your library—and add parents recursively right inside the picker with automatic loop protection.
Track every seed lot by count, type (Regular, Feminized, Autoflower, Auto Fem), source, acquired date, and harvest date. Store lots in physical Seed Boxes with grid coordinates, export/import your entire vault via CSV Spreadsheets, generate a Spare Seeds List for trading, or roll the Random Strain Picker dice to choose your next run.
Pair Govee H5075 Bluetooth thermo-hygrometers to your rooms, compute leaf-offset VPD automatically, and track every watt across 18/6 veg and 12/12 flower photoperiod flips.
Assign one or multiple Govee Bluetooth sensors to a grow room. PlantMaxer averages live canopy temperature, RH%, and VPD across your room's sensors, monitors battery levels, logs readings automatically at 5, 15, 30, or 60-minute intervals, and charts a line per sensor.
Log air temperature, relative humidity, IR gun leaf temperature, CO₂ (ppm), and canopy light intensity (PPFD µmol/m²/s). When leaf temperature is entered, PlantMaxer computes true Leaf VPD (kPa) using the Tetens vapor pressure equation instead of air VPD alone.
Log LEDs, inline fans, dehumidifiers, and AC units with wattage and hours/day. When you flip a tent from 18 hours to 12 hours, PlantMaxer keeps the historical schedule change so your kWh usage and electricity cost reports stay exact for Today, 7d, 30d, and All Time.
These interactive calculators run the exact same Tetens vapor pressure and guaranteed-analysis elemental conversion formulas built into the iOS app.
Every plant, strain, seed lot, and storage box in PlantMaxer gets a unique Code 128 barcode (P7KQ2MX, S9M4K2P, L3X8N1Q). Print individual or batch labels straight from iOS in standard 17 × 54 mm (seed vials & plant stakes) or 62 × 100 mm (pots & full seed box manifests).
Tap the camera scan button on the Plants or Strains tab and point your iPhone at a label to jump straight to that plant's feed log or strain pedigree.
Blue Dream F1 · Started Oct 14, 2026
Regular seeds · F1 · Box 1 · A10
18 lots · 342 seeds · A1–F12 indexed
Common questions from indoor tent growers, coco drain-to-waste cultivators, hydro reservoir operators, and home cannabis breeders.
Every daily feed log in PlantMaxer records Water Volume, pH In → pH Out (runoff), and PPM In → PPM Out (runoff), automatically computing the delta (Δ) drift so you catch root-zone salt accumulation or pH lockout early. You can also log shared hydroponic reservoir feeds (DWC, RDWC, drip) or whole-room feeds while keeping per-plant runoff readings separate.
Add any liquid bottle or dry water-soluble salt to your custom Nutrient Library with its guaranteed analysis percentages (N, P₂O₅, K₂O, Ca, Mg, S, Fe, Si) and liquid density (g/ml). Every feed automatically calculates the exact milligrams (mg) and parts per million (ppm) of each element delivered.
Yes. PlantMaxer features a dedicated cannabis strain lineage and seed vault database supporting Indica, Sativa, Hybrid, filial generations (P1, F1–F6), selfed lines (S1, S2), backcrosses (BX1–BX3), IBL, and Landrace genetics. Pick Mother (♀) and Father (♂) parents to view multi-generation pedigree trees, and store Regular, Feminized, or Autoflower seed lots by physical Seed Box and grid slot (e.g., Box 1 · A11) with full CSV spreadsheet import/export.
Yes. Pair Govee H5075 Bluetooth thermo-hygrometers directly to your grow rooms for live temperature, relative humidity (RH%), battery monitoring, multi-sensor room averaging, and historical charts. PlantMaxer calculates Vapor Pressure Deficit (VPD in kPa) using the Tetens equation—switching automatically to true Canopy Leaf VPD when leaf temperature is logged alongside CO₂ (ppm) and light intensity (PPFD µmol/m²/s).
Toggle Flowering on any plant when you flip your grow room lights to 12/12. PlantMaxer records the flip date, displays both total Veg days and current Flower day (e.g., Day 49 · Flower day 21), stamps EXIF progress photos for full-screen timelapses, and estimates harvest dates from your strain's flowering weeks.
100%. PlantMaxer has no user accounts, no cloud sign-ups, no ads, and zero analytics tracking. Your plants, photos, feed schedules, and seed inventory stay on your iPhone and iPad in Apple SwiftData, sync exclusively across your own devices through your encrypted private Apple iCloud container, and export anytime to JSON or CSV.
PlantMaxer has no accounts, no sign-ups, no analytics SDKs, and no third-party servers. Everything is stored locally on your iPhone and iPad using Apple SwiftData, optionally synced across your own devices through your encrypted private iCloud container, and exportable anytime as a full JSON backup or CSV seed inventory.
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