Growli vs Greg — the honest comparison.

Yes. Growli and Greg are the two app-led plant advisors competing in the same category, with one big philosophical split: Greg leans on a massive 30,000-species library plus a community feed for diagnosis, while Growli leans on conversational AI dialog plus a daily weather-tied briefing. If you find Greg helpful but want push-style daily plans, frost alerts, or UK RHS ratings, Growli is the closest peer.

Greg has a free core tier covering basic reminders, identification, and community access. The premium tier (Super Greg) is $29.99 per year or $49.99 as a one-time lifetime purchase. A 7-day free trial converts automatically. Greg also runs a Plant Shop where Super Greg members get free shipping and a lifetime replacement guarantee. Growli sits at a comparable annual price point with a free core tier and Plus at roughly $30 USD / £24 GBP per year.

Greg is installable in the UK but the app is US-calibrated — frost dates, climate guidance, and the community lean American. There are no RHS hardiness ratings, no UK Met Office integration, and no UK retailer cross-references. For UK gardeners who want native RHS H1a–H7 ratings, UK weather data, and advice that maps to British growing seasons, Growli is the better pick.

No. Greg is a reactive app — you open it, ask a question or check reminders, and act. There is no proactive daily briefing tying weather, season, and tasks together. Growli pushes a morning briefing with the day's tasks and any frost or heat warnings, which is the wedge for gardeners who want a daily prompt rather than another app to remember to open.

On raw species coverage Greg leads — 30,000-plus species with AR-based PlantVision identification is genuinely impressive and Growli does not match that catalogue size yet. Growli's identification is strong on common houseplants and outdoor garden species and improves monthly, but for obscure ornamentals or cultivar-level accuracy, Greg or PictureThis still wins. The Growli wedge is what happens after the ID: the conversational diagnosis and the daily care plan.

You will need to re-add your plants to Growli — there is no direct import path yet — but the process is fast because Growli's conversational onboarding picks up watering rhythm and light conditions over the first few days of use. If you have a large Greg collection, start by adding your three or four most-watched plants to Growli, run both apps in parallel for a week, and decide whether the daily briefing earns the switch.

Both work for beginners, but in different ways. Greg pairs a polished reminder calendar with a community that answers beginner questions in plain English, which is reassuring for first-time plant owners with two or three houseplants. Growli is more useful for beginners who garden outdoors as well as indoors, because the conversational diagnosis handles the visually overlapping symptoms (yellow leaves can mean five things) that trip beginners up.