Plant watering reminder, without the guesswork.
LastTap Team
The people who make LastTap
Short answer
Want an app that knows your plant's species and tells you when to water? That's a care app like Planta or Greg. Want to know how many days since you last watered, and decide yourself? LastTap: one widget per plant, tap it after watering, the count goes back to zero. Three plants are free forever.
In this post
Why "days since" works for watering
Most houseplants don't want water on a fixed day. They want it when the soil is dry enough, and that changes with the season and the room. A reminder every Saturday drowns one plant and dries out another. Knowing it's been 9 days, and the soil feels dry, is usually enough to decide.
LastTap isn't a plant care app. It doesn't identify species, check the weather or say how much water to use. It remembers when you last did it, so you stop wondering if it was Sunday or the Sunday before.
Set it up
- Add one event per plant, or per group: Watered the fern, Watered the balcony.
- Give it a photo of the plant, your own or a free Unsplash one, so you know the widget at a glance.
- Add the widget to your Home Screen. Long-press it, Edit Widget, pick the plant.
- Water, then tap the widget. Done, without opening the app.
- Optional: a reminder after a week, two weeks or a month. The widget shows Overdue until you water and tap.
Every tap lands in the plant's history. Over a few months you see how often you actually water it, which helps when one starts to droop.
Plant watering reminder apps compared
From their UK App Store listings, 28 October 2026:
| App | What it does | Knows your plant? | Price (UK) |
|---|---|---|---|
| LastTap | Days since you last watered, tap-to-reset widget | No | Free for 3, £3.99 once for more |
 Planta | Identifies plants, care schedules that adapt to your home and local weather, a plant doctor | Yes | Free, with in-app purchases |
 Greg | Identifies plants, says how much to water, reminders, a community | Yes | Free, with in-app purchases |
 Plant Daddy | Your own notes per plant and watering reminders on a schedule you set | No, on purpose | Free, with in-app purchases |
What else to track for plants
- Fed (fertiliser)
- Repotted
- Turned towards the light
- Wiped the leaves
- Checked for pests
Is it free?
Three events are free forever, for example three plants or three groups. One payment (£3.99 in the UK) gets you more. No subscription, no ads, no account.
Questions people ask
Is there a free plant watering reminder app?
Yes. LastTap is free for three plants or plant groups, with the widget and reminder included. Planta, Greg and Plant Daddy are also free to download with in-app purchases.
Can LastTap remind me to water my plants?
Yes. Pick a reminder after a week, two weeks or a month. LastTap sends one notification when it has been that long, and the widget shows Overdue until you water and tap it.
Does LastTap know how often my plant needs water?
No. It doesn't identify plants or give care advice. It tracks how long since you last watered, so you can decide. For care advice, use Planta or Greg.
Can I track several plants?
Yes. Add one event per plant or per group. Three are free forever, and one payment gets you more.
Sources, checked 28 October 2026: UK App Store listings for LastTap, Planta, Greg and Plant Daddy.
