# Basic Calc Plus vs PrimeCalc

The clearest difference is update cadence: PrimeCalc at every 5 weeks against Basic Calc Plus's every 17 months. PrimeCalc also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

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

Basic Calc Plus ships an update every 17 months, PrimeCalc every 5 weeks. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Basic Calc Plus | PrimeCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 5 weeks** |
| Size | 5 MB | 12 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Osamu Ishigami](https://appshunter.io/developer/901265058) | [Yutaka Nakao](https://appshunter.io/developer/1303008060) |

## What reviewers say

### Basic Calc Plus

[App page](https://appshunter.io/ios/app/basic-calc-plus/id926102502)

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

**In-app purchases:** none


### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc-modprime-factor/id1332239791)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Basic Calc Plus free?

Basic Calc Plus is free to download, with no in-app purchases.

### Is PrimeCalc free?

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

### Do Basic Calc Plus or PrimeCalc have ads?

Both Basic Calc Plus and PrimeCalc show ads.

### Which is updated more often, Basic Calc Plus or PrimeCalc?

Basic Calc Plus ships an update every 17 months, and PrimeCalc every 5 weeks. Most recently, Basic Calc Plus was updated on September 17, 2026 and PrimeCalc on September 10, 2026.

---

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