# Astro Tools vs GrowCalc

Astro Tools and GrowCalc are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Astro Tools sells 3 in-app purchases, starting at $0.99 per month and GrowCalc sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Astro Tools against 5.0 for GrowCalc. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Astro Tools ships an update every 2 weeks, GrowCalc every 9 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Astro Tools | GrowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/astro-tools/id1222414156/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/growcalc/id6786804897/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 35 MB | 53 MB |
| Requires iOS | **15** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [REINALDO CAMACHO](https://appshunter.io/developer/6786804899) |

## What reviewers say

### Astro Tools

[App page](https://appshunter.io/ios/app/astro-tools/id1222414156)

This comprehensive astronomy toolkit offers tools for planning celestial observations, finding and tracking targets, and capturing astrophotography. It includes AR sky planning, plate solving, and telescope control features for both observers and imagers.

**Highlights:** Augmented Reality Sky Planner, Astro Camera with manual controls, Plate Solver for astrophotos, Telescope aiming and control, Astronomy-focused weather forecasts, Satellite tracking and visibility

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astro Tools Pro Monthly | $0.99 | per month |
| Astro Tools Pro 6 Months | $2.99 | per 6 months |
| Astro Tools Pro Annual | $4.99 | per year |


### GrowCalc

[App page](https://appshunter.io/ios/app/growcalc/id6786804897)

This app is a comprehensive lawn care toolkit that uses precision math and live climate data to help users grow healthier lawns. It offers tools for calculating fertilizer rates, logging applications, diagnosing issues with AI, and tracking weather patterns. Manage multiple lawn zones and access global pest pressure data.

**Highlights:** Precision NPK calculator, Smart application logging, AI photo diagnosis for weeds and diseases, AI lawn assistant for expert advice, Live weather and spray window forecasts, Growing Degree Days (GDD) tracking, Global pest and disease pressure monitoring

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GrowCalc Pro | $4.99 | per month |
| GrowCalc Pro | $49.99 | per year |


## Frequently asked questions

### Is Astro Tools free?

Astro Tools is free to download, with in-app purchases available.

### Is GrowCalc free?

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

### Which has better reviews, Astro Tools or GrowCalc?

Astro Tools and GrowCalc are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Astro Tools or GrowCalc have ads?

Neither Astro Tools nor GrowCalc shows ads.

### Which is updated more often, Astro Tools or GrowCalc?

Astro Tools ships an update every 2 weeks, and GrowCalc every 9 days. Most recently, Astro Tools was updated on November 2, 2026 and GrowCalc on October 31, 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.*