# PAR Meter: Grow Light PPFD DLI — Measure plant light for growth

> Measure plant light for growth (iPhone/iPad app by Contechity AB.)

- Source: https://appshunter.io/ios/app/par-meter-grow-light-ppfd-dli/id6809813426 (this page in markdown: same URL + `.md`)
- Developer: [Contechity AB](https://appshunter.io/developer/1649290454)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 43 MB
- Languages: American English, Afrikaans, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino and 30 more
- Released: 2026-10-07
- Data updated: 2026-10-13

## What is PAR Meter?

Is your plant getting enough light? PAR Meter tells you in seconds.

It measures the light your plants actually use, as PPFD right now and as DLI over the whole day. Pick your plant type and the gauges show green, yellow or red, together with advice on what to do.

WHAT YOU GET
• PPFD in µmol/m²/s, the light at the canopy right now
• DLI in mol/m²/day, the total light per day for your light period
• A recommended band on the gauges for your plant type
• Clear advice: move the lamp, dim it, or change the hours
• Lux and foot-candles as well

PLANT TYPES
Houseplants, orchids, succulents, seedlings, cuttings, microgreens, leafy greens, herbs, root vegetables, fruits and berries, fruiting vegetables, and high light plants in the vegetative and flowering stages. Each with its recommended light range.

WORKS WITH ANY LIGHT
LED grow lights, daylight, household LED, fluorescent, HPS, MH and CMH, or your own µmol per lux factor. The right light source type is what makes the reading accurate.

MADE FOR GROWERS
• Logarithmic gauge, precise both on a dim windowsill and under a strong lamp
• Hold button to freeze the reading before you take the phone out from the plants
• Save measurements with time and comments, and re-read them for another plant or light period
• Calibration for even better accuracy

HOW TO USE
Hold a white paper at the top of your plants, facing the light, and point the camera at it. Set your light period per day to get the DLI, and select the plant type for recommendations.

WHY IT MATTERS
Plants do not grow on lux. They grow on PAR, the light between 400 and 700 nm that photosynthesis can use. Too little gives pale, stretched growth. Too much wastes electricity and burns leaves. Measuring lets you hang your lamp at the right height, find the dark corners, and compare lamps.

FREE TO USE
Measuring PPFD, DLI and lux under daylight and white LED is free, with no time limit and no ads. The other light source types, saving measurements and calibration are available with a one-time fee or subscription, still at a fraction of the cost of a dedicated PAR meter.

Privacy Policy, https://contechity.com/par-meter/pp.html
End User License Agreement, https://contechity.com/par-meter/eula.html

DEDICATED SUPPORT
Your feedback helps improve the app. Contact us at apps@contechity.com for support or suggestions.

Turn your phone into a grow light meter today and give your plants the light they need.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Full Access (Month) | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Access (Lifetime) | $20.00 | one-time |


## Is PAR Meter safe?

Not enough ratings yet to assess PAR Meter.

## Is PAR Meter legit?

PAR Meter: Grow Light PPFD DLI appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for PAR Meter is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.2 — 2026-10-08

• Brand new app!

Please let us know what you think in a review!

## Apps similar to PAR Meter

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [LumenLeaf: PPFD Grow Light](https://appshunter.io/ios/app/lumenleaf-ppfd-grow-light/id6771374329) | — | Free | Utilities |
| [Leviathan Magic Organizer](https://appshunter.io/ios/app/leviathan-magic-organizer/id6460975870) | 3.3 (3) | Free | Utilities |
| [Plant Light Meter: Lux & PPFD](https://appshunter.io/ios/app/plant-light-meter-lux-and-ppfd/id1628111038) | 1.7 (11) | Free | Utilities |
| [Mars Hydro](https://appshunter.io/ios/app/mars-hydro/id6479227564) | 2.6 (27) | Free | Utilities |
| [Solar PV Forecast & Alerts](https://appshunter.io/ios/app/solar-pv-forecast-and-alerts/id6479313475) | 4.0 (28) | Free | Utilities |
| [Lux Tint & Light Meter - PPFD](https://appshunter.io/ios/app/lux-tint-and-light-meter-ppfd/id6741324393) | 4.7 (3) | Free | Utilities |

## More apps by Contechity AB

- [Flicker Meter for Light - PWM](https://appshunter.io/ios/app/flicker-meter-for-light-pwm/id1672848632)
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- [Colorimeter Camera Color Meter](https://appshunter.io/ios/app/colorimeter-camera-color-meter/id6449255688)
- [Light Spectrometer Wavelength](https://appshunter.io/ios/app/light-spectrometer-wavelength/id6450930820)
- [Lux Light Meter Photography](https://appshunter.io/ios/app/lux-light-meter-photography/id6478221966)
- [Screen Brightness Nits Meter](https://appshunter.io/ios/app/screen-brightness-nits-meter/id6749894754)

All apps by Contechity AB: https://appshunter.io/developer/1649290454

## Related topics

[growing plants light](https://appshunter.io/ios/topics/growing-plants-light) · [grow light meter](https://appshunter.io/ios/topics/grow-light-meter)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-13.*