# Trigonometry calc vs Colloque Istanbul 2026

The clearest difference is in-app purchases: Colloque Istanbul 2026 at none against Trigonometry calc's 1. Colloque Istanbul 2026 also leads on ads (none vs shown) and update cadence (daily vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Trigonometry calc sells 1 one-off in-app purchase. Colloque Istanbul 2026 asks for nothing beyond the download.

Trigonometry calc ships an update every 3 months, Colloque Istanbul 2026 daily. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Trigonometry calc | Colloque Istanbul 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-calc/id1306864057/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 6 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bo Kalvslund](https://appshunter.io/developer/572272193) | [LATIF ALPER GAGA](https://appshunter.io/developer/1895872551) |

## What reviewers say

### Trigonometry calc

[App page](https://appshunter.io/ios/app/trigonometry-calc/id1306864057)

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

**Highlights:** Calculate side lengths, Calculate angles, Pythagorean Theorem, Trigonometry functions, Learn simple trigonometry, General triangle calculator (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


### Colloque Istanbul 2026

[App page](https://appshunter.io/ios/app/colloque-istanbul-2026/id6764671371)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry calc free?

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

### Is Colloque Istanbul 2026 free?

Colloque Istanbul 2026 is free to download, with no in-app purchases.

### Do Trigonometry calc or Colloque Istanbul 2026 have ads?

Trigonometry calc shows ads; Colloque Istanbul 2026 does not.

### Which is updated more often, Trigonometry calc or Colloque Istanbul 2026?

Trigonometry calc ships an update every 3 months, and Colloque Istanbul 2026 daily. Most recently, Trigonometry calc was updated on November 6, 2026 and Colloque Istanbul 2026 on November 5, 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.*