ChloroFileEvery plant, start to cure.
A grow journal for iPhone and Android that keeps the whole record: stage timelines, environment readings, photos, and what came off the plant. A reference of 15,650 varieties is built in, so it works with no signal and no account.
- Works entirely offline
- No account required
- Sync only if you ask for it
What using it actually looks like
What you did and what you saw, in one entry
Watered, fed, topped, trimmed: pick what you did, add whatever you measured, and save it to every plant it covers. You take one temperature walking into the tent, not four, and each plant keeps its own copy, so correcting one later leaves the others alone.
- Seven actions: water, feed, training, pests, trim, transplant and flush
- Temperature, humidity, PPFD and light hours, pH, EC, water, height and notes
- VPD is worked out as you type, from leaf temperature rather than air
- DLI is worked out from PPFD and the light hours, which fill themselves in from the stage
- VPD, PPFD and DLI are each coloured against the target for the plant's stage
- Height drops out of a multi-plant log, being the one per-plant reading
Look the variety up without leaving the app
15,650 varieties from 341 breeders, on the device. Pick one when you add a plant and it fills in type, seed type, flowering time, potency and lineage where known.
- Coverage is stated, not guessed: a third know flowering time, under a tenth know lineage
- 593 carry lab-sample medians, kept apart from what the breeder claims
- No account and no signal needed to read any of it
Describe the space and the gear in it
Tents, rooms and plots with the gear inside them, from a catalogue of real brands. Readings then belong to a space rather than floating loose.
- Light wattage fills itself in and feeds grams per watt at harvest
- An indoor space with too little light for flowering says so, from its size and the wattage in it
- Your plants are listed under the tent they live in
- Set a leaf-temperature offset for your lights, so VPD matches the published bands
- Nearby Govee hygrometers can be read straight into a log
The things a season of logging is for
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Charts with the right band
Seven metrics across the plant's life, with the target band for the stage it is in.
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Photo timeline
A dated photo history per plant. Photos stay on your device, even with sync on.
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Reminders that arrive
Watering, feeding and training tied to the plant, delivered whether or not the app is open.
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Compare finished runs
Finished plants side by side: stage lengths, dry weight, grams per watt. The answer to whether a change helped.
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CSV export, always free
A row per plant with stage lengths and yield, a row per log, every column naming its unit.
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Outdoor season planning
41 regions with median frost dates from published climate normals, and what finishes before the freeze.
15,650 varieties in the app. 11,722 pages on the web.
The app carries the whole catalogue. The website publishes a page only where a record has enough to say, and lists the rest under their breeder. How that line is drawn.
Three things the catalogue can answer in your browser
Will it finish outdoors?
A photoperiod in the ground flowers when the days get short, not when you decide. In northern Minnesota that leaves 32 days before the first frost. Pick your region and see what beats it, with sow and harvest dates.
Grow planner
Sow date, veg, flowering, dry and cure drawn across your frost window. Shows the tent date and the outdoor date side by side, so the two never get confused.
The same cultivar, different breeders
Forty-four seed banks sell a White Widow and none agree on how long it takes. 160 comparisons of flowering time, seed type and claimed potency.
Free covers one tent properly
Pro raises the limits on plants and environments, and charts every metric instead of temperature alone. The variety catalogue, your finished grows and CSV export are free, always.
No account needed, no trial to start
- 4 active plants at a time
- 1 environment
- Temperature charts
- All 15,650 varieties
- Unlimited logs, photos and reminders
- Unlimited finished grows, kept forever
- CSV export
or $24.99 a year, billed annually
- As many active plants as you grow
- As many tents, rooms and plots as you run
- Charts for all nine metrics: temperature, humidity, VPD, PPFD, DLI, pH, EC, water and height
- Everything on the free plan
Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel in your Apple Account settings on iPhone, or in Google Play on Android.
Your grow is nobody else's business
- ✓Your journal stays yours. No plant, reading, note or photo is ever sent for measurement. On iPhone the app reports a short list of counts so we can tell which adverts led to an install, named in full here. Android reports nothing.
- ✓Photos never leave the device. Stored locally and not uploaded, even when sync is on.
- ✓No account required. Every feature works signed out and offline. Signing in adds a backup and a second device, nothing more.
- ✓No ads, and nothing follows you. No advertising, no advertising identifier, and nothing here can recognise you in another company's app.
- ✓You can delete everything. Deleting your account from Settings removes it and the data synced to it, permanently.
One grower, in northern Minnesota
I'm Chad. I built ChloroFile because the app I was using just didn't do everything I wanted any more. I wanted one that matched how I actually run a tent, so I decided to build it.
It's just me. There's no big company in the background.
I also write up my own grows, harvests and gear at 218cultivation.com and post videos on the 218 Cultivation YouTube channel.
The support email goes to the same person who writes the code. If something's broken or missing, tell me at support@chlorofile.app and it usually shows up in the next update.
Common ones
Do I need an account?
No. Every feature works offline without one. Signing in adds a backup and keeps a second device in step; signing out leaves your grows where they are.
Why does the app say 15,650 varieties and the search say 11,722?
They count different things. The app carries all 15,650, because a thin record still answers "what did I plant". The website gives a variety its own page when the record clears a bar: a flowering window plus a second fact, or measured potency alongside reported effects, or named parents or grow traits. That is 11,722 of them. The rest are listed on their breeder's page, where the same information sits in context.
What does Pro cost, and what does it include?
$3.99 a month or $24.99 a year. It lifts the four-plant and one-environment limits and charts all nine metrics rather than temperature alone. Logs, photos, reminders, finished grows, CSV export and the whole catalogue are free.
Where does the variety data come from?
Breeder catalogues and open datasets, compiled and bundled into the app. Each entry shows its source and how current it is. Reference data, not a measurement of your plant.
Is my data encrypted?
Synced data travels over HTTPS and is encrypted at rest by our hosting provider. Data on your device is protected by the phone's own encryption, iOS Data Protection on iPhone and Android's device encryption on Android. Photos are not synced at all.
Is there an Android version?
Yes. It went live on Google Play on 1 October 2026: a native Android app with the same catalogue and the same offline behaviour, for Android 8.0 and later. iPhone needs iOS 17.0 or later.
What can I use it for?
Any plant you grow and want a record of. It is a record-keeping tool, so following whatever laws apply where you live is on you. The app sells and supplies nothing.
Start the next one properly
Free on the App Store and on Google Play. No account, no signal needed, and the whole variety catalogue included.