# Isometric Paper vs Triangle & Angle calculator

The clearest difference is review sentiment: Isometric Paper at 59% against Triangle & Angle calculator's 5%. Isometric Paper also leads on in-app purchases (none vs 2) and iOS requirement (9.0 vs 15.0). Triangle & Angle calculator's advantage is rating (4.1 vs 3.5) and update cadence (every 3 months vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. Triangle & Angle calculator sells 2 one-off in-app purchases. Isometric Paper asks for nothing beyond the download.

Triangle & Angle calculator holds the better App Store score, 4.1 against 3.5. That said, the two scores are not equally well evidenced: Triangle & Angle calculator has 216 ratings behind it against 42, so its average is the more settled of the two. Written reviews complicate that: 59% of Isometric Paper's written reviews are positive against 5% of Triangle & Angle calculator's, so the app with the better star average is not the one people write more warmly about.

Isometric Paper ships an update every 16 months, Triangle & Angle calculator every 3 months. The most recent releases landed on October 24, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Isometric Paper | Triangle & Angle calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (42 ratings)](https://appshunter.io/ios/app/isometric-paper/id1045446163/reviews) | **[4.1 (216 ratings)](https://appshunter.io/ios/app/triangle-and-angle-calculator/id1278963382/reviews)** |
| Number of ratings | 42 | **216** |
| Positive reviews | **59.3% of reviews** | 4.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 7 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heiko Etzold](https://appshunter.io/developer/715739131) | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) |

## What reviewers say

### Isometric Paper

[App page](https://appshunter.io/ios/app/isometric-paper/id1045446163)

Create isometric drawings of various solid objects. This tool allows users to visualize and sketch 3D shapes in an isometric perspective.

**Highlights:** Draw isometric views, Visualize solid objects, 3D shape sketching

**In-app purchases:** none


### Triangle & Angle calculator

[App page](https://appshunter.io/ios/app/triangle-and-angle-calculator/id1278963382)

Easily solve geometry exercises and verify your calculations with this tool. It simplifies complex problems with a single click, making math more accessible.

**Highlights:** Solve geometry exercises, Check calculations, Simple click interface, Angle calculations, Formula solver

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deleting advertisements | $0.99 | one-time |
| Detail Calculations and formul | $1.99 | one-time |

**What reviewers like**

- 👍 Detailed calculations and formulas (rare)

**What reviewers complain about**

-  광고 Excessive and intrusive ads
- 💰 Forced payment for basic features
- 💸 Unclear payment for formulas
- 🚫 Ads obstruct usability
- 👎 Poor UI/UX

**Reported bugs**

- Pop-up obstructs initial use
- Cannot change settings due to pop-up
- Formulas not visible after payment
- App resets angles
- Menu covers solution

**Requested features**

- Metric version available
- Option to disable ads without payment


## Frequently asked questions

### Is Isometric Paper free?

Isometric Paper is free to download, with no in-app purchases.

### Is Triangle & Angle calculator free?

Triangle & Angle calculator is free to download, with in-app purchases available.

### Which has better reviews, Isometric Paper or Triangle & Angle calculator?

Triangle & Angle calculator is rated higher. Isometric Paper averages 3.5 out of 5 from 42 ratings, while Triangle & Angle calculator averages 4.1 from 216 ratings.

### Do Isometric Paper or Triangle & Angle calculator have ads?

Neither Isometric Paper nor Triangle & Angle calculator shows ads.

### Which is updated more often, Isometric Paper or Triangle & Angle calculator?

Isometric Paper ships an update every 16 months, and Triangle & Angle calculator every 3 months. Most recently, Isometric Paper was updated on October 24, 2026 and Triangle & Angle calculator on November 1, 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.*