# Simple Units Converter lite vs Calculation Pad

The clearest difference is in-app purchases: Simple Units Converter lite at none against Calculation Pad's 5. Calculation Pad's advantage is update cadence (fortnightly vs every 8 months) and iOS requirement (13.0 vs 16.2). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Calculation Pad sells 5 one-off in-app purchases. Simple Units Converter lite asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Simple Units Converter lite against 5.0 for Calculation Pad. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Simple Units Converter lite ships an update every 8 months, Calculation Pad fortnightly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Simple Units Converter lite | Calculation Pad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/simple-units-converter-lite/id599423578/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/calculation-pad/id1473259620/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 3 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mind Trends LLC](https://appshunter.io/developer/582509215) | [Yukio Tajima](https://appshunter.io/developer/1473259619) |

## What reviewers say

### Simple Units Converter lite

[App page](https://appshunter.io/ios/app/simple-units-converter-lite/id599423578)

Easily convert between various units of measurement with this user-friendly calculator. It offers a wide range of dimensions and units for everyday use and specific applications.

**Highlights:** Extensive unit library, 22 different dimensions, User-friendly interface, General-purpose calculator, Lite version

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

**In-app purchases:** none


### Calculation Pad

[App page](https://appshunter.io/ios/app/calculation-pad/id1473259620)

This calculator app keeps a history of your calculations, allowing you to easily reuse past results. It offers enhanced security features like fingerprint or password protection for sensitive data. Despite its advanced functionality, it remains free to use.

**Highlights:** Calculation history, Reuse past calculations, Add taxes, Fingerprint/password/face protection, Free to use

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer Support | $0.99 | one-time |
| Small tip | $0.99 | one-time |
| Medium tip | $3.99 | one-time |
| Developer Support | $6.99 | one-time |
| Large tip | $6.99 | one-time |


## Frequently asked questions

### Is Simple Units Converter lite free?

Simple Units Converter lite is free to download, with no in-app purchases.

### Is Calculation Pad free?

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

### Which has better reviews, Simple Units Converter lite or Calculation Pad?

Simple Units Converter lite and Calculation Pad are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Simple Units Converter lite or Calculation Pad have ads?

Neither Simple Units Converter lite nor Calculation Pad shows ads.

### Which is updated more often, Simple Units Converter lite or Calculation Pad?

Simple Units Converter lite ships an update every 8 months, and Calculation Pad fortnightly. Most recently, Simple Units Converter lite was updated on November 6, 2026 and Calculation Pad on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*