# Glow calculator vs Octuple Calc

The clearest difference is update cadence: Octuple Calc at every 2 weeks against Glow calculator's every 4 months. Glow calculator's advantage is iOS requirement (13.4 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.

Glow calculator ships an update every 4 months, Octuple Calc every 2 weeks. The most recent releases landed on June 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Glow calculator | Octuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/glow-calculator/id6450678181/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 18 MB | 36 MB |
| Requires iOS | **13.4** | 15.8.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FLYYRT UG (haftungsbeschrankt)](https://appshunter.io/developer/1433607476) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Glow calculator

[App page](https://appshunter.io/ios/app/glow-calculator/id6450678181)

A modern calculator with a clean interface and interactive glowing effects. Customize your experience with beautiful color themes for everyday math tasks.

**Highlights:** Modern and stylish interface, Interactive glowing effects, Customizable color themes, Smooth and responsive performance, Simple everyday math calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Octuple Calc

[App page](https://appshunter.io/ios/app/octuple-calc/id6742039735)

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

**In-app purchases:** none


## Frequently asked questions

### Is Glow calculator free?

Glow calculator is free to download, with no in-app purchases.

### Is Octuple Calc free?

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

### Do Glow calculator or Octuple Calc have ads?

Both Glow calculator and Octuple Calc show ads.

### Which is updated more often, Glow calculator or Octuple Calc?

Glow calculator ships an update every 4 months, and Octuple Calc every 2 weeks. Most recently, Glow calculator was updated on June 4, 2026 and Octuple Calc on September 10, 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.*