# 1Calc vs deep.space

The clearest difference is in-app purchases: deep.space at none against 1Calc's 3. deep.space also leads on ads (none vs shown) and update cadence (every 4 days vs fortnightly). On price there is nothing between them.

Both are free to download. 1Calc sells 3 in-app purchases, starting at $0.99 per month. deep.space asks for nothing beyond the download.

1Calc ships an update fortnightly, deep.space every 4 days. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 1Calc | deep.space |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 6 MB | 24 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Asim Roy](https://appshunter.io/developer/1703408134) | [Eudaimonic](https://appshunter.io/developer/1865512517) |

## What reviewers say

### 1Calc

[App page](https://appshunter.io/ios/app/1calc-one-calculator/id6502853473)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $3.99 | per year |
| Lifetime | $8.99 | one-time |


### deep.space

[App page](https://appshunter.io/ios/app/deepspace/id6757244371)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 1Calc free?

1Calc is free to download, with in-app purchases available.

### Is deep.space free?

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

### Do 1Calc or deep.space have ads?

1Calc shows ads; deep.space does not.

### Which is updated more often, 1Calc or deep.space?

1Calc ships an update fortnightly, and deep.space every 4 days. Most recently, 1Calc was updated on September 20, 2026 and deep.space 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.*