# Green Thumbometer vs Sun Mapper

The clearest difference is price: Sun Mapper at Free against Green Thumbometer's $2.99. Sun Mapper also leads on rating (5.0 vs 2.0) and update cadence (every 3 weeks vs every 3 months). Green Thumbometer's advantage is in-app purchases (none vs 6) and iOS requirement (15.6 vs 17.0). On review sentiment, ratings volume, ads and device support there is nothing between them.

Sun Mapper is free to download; Green Thumbometer costs $2.99 up front. Sun Mapper sells 6 one-off in-app purchases. Green Thumbometer asks for nothing beyond the download.

Sun Mapper holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Green Thumbometer ships an update every 3 months, Sun Mapper every 3 weeks. The most recent releases landed on September 27, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Green Thumbometer | Sun Mapper |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/green-thumbometer/id1501761092/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sun-mapper/id6475697058/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 119 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Forrest Anderson](https://appshunter.io/developer/1356423799) | [Michael Ceryak](https://appshunter.io/developer/1719839845) |

## What reviewers say

### Green Thumbometer

[App page](https://appshunter.io/ios/app/green-thumbometer/id1501761092)

This app helps gardeners plan and track their tasks with customizable monthly checklists, a gardening journal, and a shopping list. It provides seasonal task guidance based on hemisphere and includes a map to find local gardening stores.

**Highlights:** Customizable monthly gardening checklists, Gardening journal with notes and photos, In-app shopping list, Gardening store locator map, Seasonal task customization by hemisphere, Task sharing and integration with other apps

**Features:** macOS Compatibility

**In-app purchases:** none


### Sun Mapper

[App page](https://appshunter.io/ios/app/sun-mapper/id6475697058)

Easily track sunlight in your garden by creating detailed sun maps. Upload photos or take new ones at intervals to visualize light patterns throughout the day. Trace sunlight areas to understand daily exposure for optimal gardening.

**Highlights:** Add and manage multiple gardens, Create sun maps with timed photo intervals, Upload photos or use in-app camera, View sun maps as a slideshow, Trace sunlight areas for detailed analysis, Compare multiple sun maps side-by-side

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free Rein | $0.99 | one-time |
| Premium | $0.99 | one-time |
| 1 Sunlight Tracing | $0.99 | one-time |
| 3 Sunlight Tracings | $1.99 | one-time |
| 6 Sunlight Tracings | $2.99 | one-time |
| 10 Sunlight Tracings | $3.99 | one-time |


## Frequently asked questions

### Is Green Thumbometer free?

Green Thumbometer costs $2.99, with no in-app purchases.

### Is Sun Mapper free?

Sun Mapper is free to download, with in-app purchases available.

### Which has better reviews, Green Thumbometer or Sun Mapper?

Sun Mapper is rated higher. Green Thumbometer averages 2.0 out of 5 from 1 ratings, while Sun Mapper averages 5.0 from 1 ratings.

### Do Green Thumbometer or Sun Mapper have ads?

Neither Green Thumbometer nor Sun Mapper shows ads.

### Which is updated more often, Green Thumbometer or Sun Mapper?

Green Thumbometer ships an update every 3 months, and Sun Mapper every 3 weeks. Most recently, Green Thumbometer was updated on September 27, 2026 and Sun Mapper on June 4, 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.*