# doodle write vs PPFD METER

The clearest difference is review sentiment: PPFD METER at 53% against doodle write's 0%. PPFD METER also leads on price (Free vs $2.99) and rating (4.6 vs 3.7). doodle write's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

PPFD METER is free to download; doodle write costs $2.99 up front. PPFD METER sells 3 in-app purchases, starting at $1.99 per month. doodle write asks for nothing beyond the download.

PPFD METER holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: PPFD METER has 128 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of doodle write's written reviews are positive against 53% of PPFD METER's.

doodle write ships an update every 14 months, PPFD METER every 3 weeks. The most recent releases landed on October 9, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | doodle write | PPFD METER |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/doodle-write/id584248966/reviews) | **[4.6 (128 ratings)](https://appshunter.io/ios/app/ppfd-meter-grow-light-meter/id6479329051/reviews)** |
| Number of ratings | 3 | **128** |
| Positive reviews | 0.0% of reviews | **52.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 115 MB | 46 MB |
| Requires iOS | **16.3** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Sigma Sky, LLC](https://appshunter.io/developer/320947305) | [Candas Pamukcu](https://appshunter.io/developer/1735587895) |

## What reviewers say

### doodle write

[App page](https://appshunter.io/ios/app/doodle-write/id584248966)

This app helps users practice writing letters, numbers, words, and sentences in both print and cursive. It also includes a doodle pad for creative expression. The app is accessible offline and free of ads or in-app purchases.

**Highlights:** Print and cursive letter practice, Print and cursive word practice, Print and cursive sentence practice, Number writing practice, Practice writing pads, Doodle pad, Offline access

**Features:** macOS Compatibility

**In-app purchases:** none


### PPFD METER

[App page](https://appshunter.io/ios/app/ppfd-meter-grow-light-meter/id6479329051)

This app measures light intensity for plants, converting LUX to PPFD and DLI. It offers advanced light mapping, uniformity analysis, and efficiency insights to optimize plant growth. Customize profiles for different environments and growth stages.

**Highlights:** LUX, PPFD, DLI, and PAR measurements, Light mapping and distribution analysis, Uniformity and PPF evaluation, Energy efficiency and consumption tracking, Customizable setting profiles, Bluetooth sensor integration

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium Plus | $2.99 | per month |
| Remove Ads | $29.99 | one-time |


## Frequently asked questions

### Is doodle write free?

doodle write costs $2.99, with no in-app purchases.

### Is PPFD METER free?

PPFD METER is free to download, with in-app purchases available.

### Which has better reviews, doodle write or PPFD METER?

PPFD METER is rated higher. doodle write averages 3.7 out of 5 from 3 ratings, while PPFD METER averages 4.6 from 128 ratings.

### Do doodle write or PPFD METER have ads?

PPFD METER shows ads; doodle write does not.

### Which is updated more often, doodle write or PPFD METER?

doodle write ships an update every 14 months, and PPFD METER every 3 weeks. Most recently, doodle write was updated on October 9, 2026 and PPFD METER on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*