# Glow calculator vs ConvertCalc

The clearest difference is in-app purchases: Glow calculator at none against ConvertCalc's 1. Glow calculator also leads on iOS requirement (13.4 vs 17.0). ConvertCalc's advantage is update cadence (every 8 days vs every 4 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. ConvertCalc sells 1 one-off in-app purchase. Glow calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Glow calculator against 5.0 for ConvertCalc. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Glow calculator ships an update every 4 months, ConvertCalc every 8 days. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Glow calculator | ConvertCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/glow-calculator/id6450678181/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/convertcalc/id6756512186/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 18 MB | 28 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FLYYRT UG (haftungsbeschrankt)](https://appshunter.io/developer/1433607476) | [Michael Riehl](https://appshunter.io/developer/1861093934) |

## 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


### ConvertCalc

[App page](https://appshunter.io/ios/app/convertcalc/id6756512186)

This app combines a powerful calculator with an advanced unit converter, offering over 200 units across 19 categories. It allows for unified calculations and conversions in one step, with features like live currency exchange and date conversions. An optional pro version unlocks advanced customization and organizational tools.

**Highlights:** Unified calculation and conversion workflow, Over 200 units across 19 categories, Live currency conversion, Multiple calendar system conversions, Age calculator, Customizable themes and layouts, Offline functionality (excluding live currency)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ConvertCalc Pro | $8.99 | one-time |


## Frequently asked questions

### Is Glow calculator free?

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

### Is ConvertCalc free?

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

### Which has better reviews, Glow calculator or ConvertCalc?

Glow calculator and ConvertCalc are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Glow calculator or ConvertCalc have ads?

Both Glow calculator and ConvertCalc show ads.

### Which is updated more often, Glow calculator or ConvertCalc?

Glow calculator ships an update every 4 months, and ConvertCalc every 8 days. Most recently, Glow calculator was updated on October 21, 2026 and ConvertCalc on October 23, 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.*