# Calcsmos vs Stackby 2.0

Calcsmos and Stackby 2.0 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calcsmos ships an update fortnightly, Stackby 2.0 monthly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Calcsmos | Stackby 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (94 ratings)](https://appshunter.io/ios/app/calcsmos-calculator/id1590091618/reviews)** | — |
| Number of ratings | **94** | — |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 18 MB | 53 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [First Water Technologies Ltd](https://appshunter.io/developer/433671837) | [Relytree Technologies Pvt. Ltd](https://appshunter.io/developer/1528175769) |

## What reviewers say

### Calcsmos

[App page](https://appshunter.io/ios/app/calcsmos-calculator/id1590091618)

A customizable and powerful calculator for everyday tasks. Features include calculation history, dynamic editing, multiple spaces, and useful overlays like a tip calculator and unit converter. It offers iCloud sync and home screen widgets without ads or trackers.

**Highlights:** Customizable layout, color, style, and theme, Calculation history, Dynamic value editing and partial deletion, Multiple spaces for different tasks, iCloud Sync support, Tip calculator and unit converter overlays, Home screen widget

**Features:** macOS Compatibility

**In-app purchases:** none


### Stackby 2.0

[App page](https://appshunter.io/ios/app/stackby-20/id6790438013)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calcsmos free?

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

### Is Stackby 2.0 free?

Stackby 2.0 is free to download, with no in-app purchases.

### Do Calcsmos or Stackby 2.0 have ads?

Neither Calcsmos nor Stackby 2.0 shows ads.

### Which is updated more often, Calcsmos or Stackby 2.0?

Calcsmos ships an update fortnightly, and Stackby 2.0 monthly. Most recently, Calcsmos was updated on October 16, 2026 and Stackby 2.0 on October 17, 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.*