# Trigonometric Calculation vs PlanningP3 Forms

The clearest difference is ads: PlanningP3 Forms at none against Trigonometric Calculation's shown. Trigonometric Calculation's advantage is update cadence (every 6 weeks vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Trigonometric Calculation ships an update every 6 weeks, PlanningP3 Forms every 4 months. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Trigonometric Calculation | PlanningP3 Forms |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 5 MB | 48 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Risako Asai](https://appshunter.io/developer/1671273580) | [Planningp3 spa](https://appshunter.io/developer/1891898611) |

## What reviewers say

### Trigonometric Calculation

[App page](https://appshunter.io/ios/app/trigonometric-calculation/id1636196284)

**Features:** macOS Compatibility

**In-app purchases:** none


### PlanningP3 Forms

[App page](https://appshunter.io/ios/app/planningp3-forms/id6761875124)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometric Calculation free?

Trigonometric Calculation is free to download, with no in-app purchases.

### Is PlanningP3 Forms free?

PlanningP3 Forms is free to download, with no in-app purchases.

### Do Trigonometric Calculation or PlanningP3 Forms have ads?

Trigonometric Calculation shows ads; PlanningP3 Forms does not.

### Which is updated more often, Trigonometric Calculation or PlanningP3 Forms?

Trigonometric Calculation ships an update every 6 weeks, and PlanningP3 Forms every 4 months. Most recently, Trigonometric Calculation was updated on September 27, 2026 and PlanningP3 Forms on September 17, 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.*