# SPIN Safe Browser vs CalcSpace

The clearest difference is rating: CalcSpace at 5.0 against SPIN Safe Browser's 4.4. CalcSpace also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.0). SPIN Safe Browser's advantage is ads (none vs shown) and ratings volume (2.7K vs 2). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. SPIN Safe Browser sells 2 in-app purchases, starting at $1.99 per month. CalcSpace asks for nothing beyond the download.

CalcSpace holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: SPIN Safe Browser has 2.7K ratings behind it against 2, so its average is the more settled of the two.

SPIN Safe Browser ships an update every 6 weeks, CalcSpace every 5 weeks. Both last shipped on October 14, 2026.

## The numbers

| Metric | SPIN Safe Browser | CalcSpace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (2.7K ratings)](https://appshunter.io/ios/app/spin-safe-browser/id1069119528/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calcspace/id6789995674/reviews)** |
| Number of ratings | **2.7K** | 2 |
| Positive reviews | 53.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 267 MB | 26 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [National Education Technologies Inc.](https://appshunter.io/developer/1053543709) | [Austin Ciminillo](https://appshunter.io/developer/6789995676) |

## What reviewers say

### SPIN Safe Browser

[App page](https://appshunter.io/ios/app/spin-safe-browser/id1069119528)

This app provides a secure browsing experience by automatically blocking adult content, pornography, and harmful websites. It offers enhanced safety features and ensures safe search results on popular engines.

**Highlights:** Automatic content blocking, Safe search enforcement, YouTube Restricted Mode, Passcode protection, Domain blocking/allowing, Ad-free experience (with subscription)

**Features:** macOS Compatibility, Family Sharing, Apple Wallet

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPIN+ Monthly Subscription | $1.99 | per month |
| SPIN+ Yearly Subscription | $19.99 | per year |

**What reviewers like**

- 🚀 Useful
- 🔒 Safe browsing
- 👍 Great app
- 🔒 Blocks inappropriate content

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Buggy and glitchy
- 🐛 Freezes when switching tabs
- 🐛 Doesn't load images/videos
- 🐛 Doesn't work offline

**Reported bugs**

- Can't delete the app
- YouTube videos not blocked
- Bypass filters using Google search
- Crashes when opening tabs

**Requested features**

- Add dark mode option
- Allow customization of blocked sites
- Improve tab management
- Better integration with iOS features


### CalcSpace

[App page](https://appshunter.io/ios/app/calcspace/id6789995674)

Perform multiple calculations simultaneously on a single screen with various calculator types. Organize up to eight workspaces with tabs and save your progress between sessions. Ideal for complex calculations or everyday tasks.

**Highlights:** Multiple calculators on one screen, Up to 8 tabs for separate workspaces, Variety of calculator types (Math, Money, Converters, Dates, Fun), Save tabs, layouts, and values, Works on iPhone and iPad, No account required

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

**In-app purchases:** none


## Frequently asked questions

### Is SPIN Safe Browser free?

SPIN Safe Browser is free to download, with in-app purchases available.

### Is CalcSpace free?

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

### Which has better reviews, SPIN Safe Browser or CalcSpace?

CalcSpace is rated higher. SPIN Safe Browser averages 4.4 out of 5 from 2.7K ratings, while CalcSpace averages 5.0 from 2 ratings.

### Do SPIN Safe Browser or CalcSpace have ads?

CalcSpace shows ads; SPIN Safe Browser does not.

### Which is updated more often, SPIN Safe Browser or CalcSpace?

SPIN Safe Browser ships an update every 6 weeks, and CalcSpace every 5 weeks. Most recently, SPIN Safe Browser was updated on October 14, 2026 and CalcSpace on October 14, 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.*