# Glo vs ShadowCalc

The clearest difference is in-app purchases: Glo at none against ShadowCalc's 3. Glo also leads on iOS requirement (15.1 vs 26.0). ShadowCalc's advantage is ratings volume (23 vs 1) and update cadence (weekly vs every 3 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. ShadowCalc sells 3 one-off in-app purchases. Glo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Glo against 5.0 for ShadowCalc. That said, the two scores are not equally well evidenced: ShadowCalc has 23 ratings behind it against 1, so its average is the more settled of the two.

Glo ships an update every 3 weeks, ShadowCalc weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Glo | ShadowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/glo-calculato/id6760606910/reviews)** | [5.0 (23 ratings)](https://appshunter.io/ios/app/shadowcalc-phantom-calculator/id6788065061/reviews) |
| Number of ratings | 1 | **23** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 27 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DeJahn Bell](https://appshunter.io/developer/1869800473) | [Ahmed Aslam Juvale](https://appshunter.io/developer/6788065063) |

## What reviewers say

### Glo

[App page](https://appshunter.io/ios/app/glo-calculato/id6760606910)

This scientific calculator features a unique rainbow glow animation and haptic feedback for each button press. It offers a full range of scientific functions, DEG/RAD mode switching, and a calculation history that can be easily copied to your clipboard.

**Highlights:** Scientific functions (sin, cos, tan, log, ln, sqrt, exponents), DEG/RAD mode switching, Calculation history, Copy results to clipboard, Haptic feedback on button press, Rainbow glow animation

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

**In-app purchases:** none


### ShadowCalc

[App page](https://appshunter.io/ios/app/shadowcalc-phantom-calculator/id6788065061)

Calculate in style with this persona-inspired calculator app. It offers unique themes, customizable icons, and haptic feedback, all with hand-drawn assets.

**Highlights:** Persona-inspired themes, Customizable icons, Haptic feedback, Unique hand-drawn assets, Multiple theme support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Level 1 Tip | $0.99 | one-time |
| Level 2 Tip | $2.99 | one-time |
| Level 10 Tip | $9.99 | one-time |


## Frequently asked questions

### Is Glo free?

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

### Is ShadowCalc free?

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

### Which has better reviews, Glo or ShadowCalc?

Glo is rated higher. Glo averages 5.0 out of 5 from 1 ratings, while ShadowCalc averages 5.0 from 23 ratings.

### Do Glo or ShadowCalc have ads?

Neither Glo nor ShadowCalc shows ads.

### Which is updated more often, Glo or ShadowCalc?

Glo ships an update every 3 weeks, and ShadowCalc weekly. Most recently, Glo was updated on October 31, 2026 and ShadowCalc 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.*