# Simple Calculator. vs SOS Light

The clearest difference is in-app purchases: Simple Calculator. at none against SOS Light's 6. Simple Calculator. also leads on device support (3 vs 1). SOS Light's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 months). On price and iOS requirement there is nothing between them.

Both are free to download. SOS Light sells 6 in-app purchases, starting at $0.49 per month. Simple Calculator. asks for nothing beyond the download.

Simple Calculator. ships an update every 3 months, SOS Light every 5 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Simple Calculator. | SOS Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.6K ratings)](https://appshunter.io/ios/app/simple-calculator/id1324926551/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 65.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 5 MB | 49 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tasser gyati](https://appshunter.io/developer/1324926550) | [JinYouL You You](https://appshunter.io/developer/1692081145) |

## What reviewers say

### Simple Calculator.

[App page](https://appshunter.io/ios/app/simple-calculator/id1324926551)

A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.

**Highlights:** Real-world logic, no forced order of operations, Running total display, Cost, sell, margin calculations, Add/subtract percentages in one step, Clean, intuitive interface with large buttons, Minimal, non-intrusive ads

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 💡 Supports percentage calculations
- 🚀 Fast and responsive
- 🔒 No security issues reported

**What reviewers complain about**

- 🐛 Occasional display issues with underline artifacts
- 📢 Intrusive ads in free version
- 💰 Paid version not clearly advertised

**Reported bugs**

- Incorrect calculation results in some cases
- Ads appearing during critical usage scenarios

**Requested features**

- Add a dedicated 'C' clear button
- Provide more customization options for key layout
- Implement a history/memory function


### SOS Light

[App page](https://appshunter.io/ios/app/sos-light/id6814722088)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light | $0.49 | per month |
| Standard | $0.99 | per month |
| Plus | $1.99 | per month |
| Pro | $2.99 | per month |
| Business | $5.99 | per month |
| Unlimited | $11.99 | per month |


## Frequently asked questions

### Is Simple Calculator. free?

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

### Is SOS Light free?

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

### Do Simple Calculator. or SOS Light have ads?

Simple Calculator. shows ads; SOS Light does not.

### Which is updated more often, Simple Calculator. or SOS Light?

Simple Calculator. ships an update every 3 months, and SOS Light every 5 days. Most recently, Simple Calculator. was updated on October 24, 2026 and SOS Light on October 6, 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.*