# Trigintuple Calc vs Solar Potential Tracker

The clearest difference is update cadence: Trigintuple Calc at every 2 weeks against Solar Potential Tracker's every 4 weeks. Solar Potential Tracker's advantage is iOS requirement (13.0 vs 15.8.3). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Trigintuple Calc ships an update every 2 weeks, Solar Potential Tracker every 4 weeks. The most recent releases landed on November 4, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Trigintuple Calc | Solar Potential Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Size | 37 MB | 67 MB |
| Requires iOS | 15.8.3 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Zia Ur Rahman](https://appshunter.io/developer/1529429081) |

## What reviewers say

### Trigintuple Calc

[App page](https://appshunter.io/ios/app/trigintuple-calc/id6742363481)

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

**In-app purchases:** none


### Solar Potential Tracker

[App page](https://appshunter.io/ios/app/solar-potential-tracker/id6769672233)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigintuple Calc free?

Trigintuple Calc is free to download, with no in-app purchases.

### Is Solar Potential Tracker free?

Solar Potential Tracker is free to download, with no in-app purchases.

### Do Trigintuple Calc or Solar Potential Tracker have ads?

Both Trigintuple Calc and Solar Potential Tracker show ads.

### Which is updated more often, Trigintuple Calc or Solar Potential Tracker?

Trigintuple Calc ships an update every 2 weeks, and Solar Potential Tracker every 4 weeks. Most recently, Trigintuple Calc was updated on November 4, 2026 and Solar Potential Tracker on November 13, 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.*