# Solar Panel Calculator Plus vs Goal Tracker

The clearest difference is price: Goal Tracker at Free against Solar Panel Calculator Plus's $2.99. Goal Tracker also leads on rating (5.0 vs 3.3) and update cadence (every 3 months vs every 47 months). Solar Panel Calculator Plus's advantage is in-app purchases (none vs 3) and ratings volume (23 vs 1). On ads and device support there is nothing between them.

Goal Tracker is free to download; Solar Panel Calculator Plus costs $2.99 up front. Goal Tracker sells 3 in-app purchases, starting at $1.49 per month. Solar Panel Calculator Plus asks for nothing beyond the download.

Goal Tracker holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Solar Panel Calculator Plus has 23 ratings behind it against 1, so its average is the more settled of the two.

Solar Panel Calculator Plus ships an update every 47 months, Goal Tracker every 3 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Solar Panel Calculator Plus | Goal Tracker |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.3 (23 ratings)](https://appshunter.io/ios/app/solar-panel-calculator-plus/id1358184660/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/goal-tracker-life-progress/id6502180081/reviews)** |
| Number of ratings | **23** | 1 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 3 months** |
| Monetization | Paid | **Freemium** |
| Size | 8 MB | 15 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Andrey Zhukov](https://appshunter.io/developer/1614487312) |

## What reviewers say

### Solar Panel Calculator Plus

[App page](https://appshunter.io/ios/app/solar-panel-calculator-plus/id1358184660)

Calculate custom off-grid solar home power systems. Determine the exact number of solar panels and battery capacity needed for your energy usage. Helps plan system size, inverter requirements, and battery bank specifications.

**Highlights:** Calculate solar panel requirements, Determine battery capacity, Calculate inverter size, Estimate daily energy usage, Plan days of autonomy, Optimize battery life calculations

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

**In-app purchases:** none


### Goal Tracker

[App page](https://appshunter.io/ios/app/goal-tracker-life-progress/id6502180081)

This application helps users set and achieve meaningful life goals. It allows for organization and tracking of progress across various life areas with customizable features and reminders. Users can monitor their achievements through simple charts and summaries.

**Highlights:** S.M.A.R.T. goal setting, Organize goals by life areas, Customizable area colors, Progress monitoring with charts, Goal reminders, iCloud synchronization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.49 | per month |
| Premium | $6.99 | per year |
| Premium Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Solar Panel Calculator Plus free?

Solar Panel Calculator Plus costs $2.99, with no in-app purchases.

### Is Goal Tracker free?

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

### Which has better reviews, Solar Panel Calculator Plus or Goal Tracker?

Goal Tracker is rated higher. Solar Panel Calculator Plus averages 3.3 out of 5 from 23 ratings, while Goal Tracker averages 5.0 from 1 ratings.

### Do Solar Panel Calculator Plus or Goal Tracker have ads?

Neither Solar Panel Calculator Plus nor Goal Tracker shows ads.

### Which is updated more often, Solar Panel Calculator Plus or Goal Tracker?

Solar Panel Calculator Plus ships an update every 47 months, and Goal Tracker every 3 months. Most recently, Solar Panel Calculator Plus was updated on October 24, 2026 and Goal Tracker on October 22, 2026.

---

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