# Geometry Calculator vs Rereminder

The clearest difference is review sentiment: Geometry Calculator at 100% against Rereminder's 50%. Geometry Calculator also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 1). Rereminder's advantage is update cadence (every 3 days vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Rereminder sells 1 one-off in-app purchase. Geometry Calculator asks for nothing beyond the download.

Geometry Calculator holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews point the same way: 100% of Geometry Calculator's written reviews are positive against 50% of Rereminder's.

Geometry Calculator ships an update every 2 months, Rereminder every 3 days. The most recent releases landed on September 21, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Geometry Calculator | Rereminder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/geometry-calculator-triangle/id6448397954/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/rereminder-presentation-timer/id6752551268/reviews) |
| Number of ratings | **8** | 5 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 12 MB |
| Requires iOS | **17** | 26.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Russkin](https://appshunter.io/developer/1218455498) | [hyunho lee](https://appshunter.io/developer/1502508537) |

## What reviewers say

### Geometry Calculator

[App page](https://appshunter.io/ios/app/geometry-calculator-triangle/id6448397954)

Perform a wide range of geometric calculations for various shapes including triangles, rectangles, circles, and prisms. Features an intuitive interface with instant recalculations and interactive visualizations. Customize units and decimal places for precise results.

**Highlights:** Calculate angles, sides, perimeter, and area, Supports triangles, rectangles, circles, spheres, cones, trapezoids, parallelograms, cylinders, and rectangular prisms, Instant recalculations based on input, Interactive animated visualizations, Customizable units of measurement, Selectable number of decimal places

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

**In-app purchases:** none


### Rereminder

[App page](https://appshunter.io/ios/app/rereminder-presentation-timer/id6752551268)

Receive timely alerts before your timers expire, ensuring you're always prepared. Customize pre-alerts with specific messages and durations. Integrates with Dynamic Island and Apple Watch for seamless tracking.

**Highlights:** Pre-alerts before timer ends, Customizable alert timing and messages, Dynamic Island & Live Activity integration, Apple Watch support, Timer templates, Labels and colors for organization, Overtime tracking

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 두번알림 pro | $9.99 | one-time |


## Frequently asked questions

### Is Geometry Calculator free?

Geometry Calculator is free to download, with no in-app purchases.

### Is Rereminder free?

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

### Which has better reviews, Geometry Calculator or Rereminder?

Geometry Calculator is rated higher. Geometry Calculator averages 5.0 out of 5 from 8 ratings, while Rereminder averages 4.4 from 5 ratings.

### Do Geometry Calculator or Rereminder have ads?

Neither Geometry Calculator nor Rereminder shows ads.

### Which is updated more often, Geometry Calculator or Rereminder?

Geometry Calculator ships an update every 2 months, and Rereminder every 3 days. Most recently, Geometry Calculator was updated on September 21, 2026 and Rereminder on October 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.*