# PrimeCalc vs Modulo Calculator

PrimeCalc and Modulo Calculator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

PrimeCalc ships an update every 5 weeks, Modulo Calculator monthly. The most recent releases landed on September 10, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | PrimeCalc | Modulo Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/modulo-calculator/id1514351751/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 12 MB | 14 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yutaka Nakao](https://appshunter.io/developer/1303008060) | [Takao Ichimura](https://appshunter.io/developer/1474061593) |

## What reviewers say

### PrimeCalc

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Modulo Calculator

[App page](https://appshunter.io/ios/app/modulo-calculator/id1514351751)

This app calculates quotients and remainders, useful for dispensing, inventory, and crafting. It displays input numbers alongside results for accuracy and features a set memory to store calculation history.

**Highlights:** Quotient and remainder calculation, Input and result visibility for accuracy, Set memory for calculation history, Independent memory function, Easy input number modification, Recall calculation history

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

**In-app purchases:** none


## Frequently asked questions

### Is PrimeCalc free?

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

### Is Modulo Calculator free?

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

### Do PrimeCalc or Modulo Calculator have ads?

Both PrimeCalc and Modulo Calculator show ads.

### Which is updated more often, PrimeCalc or Modulo Calculator?

PrimeCalc ships an update every 5 weeks, and Modulo Calculator monthly. Most recently, PrimeCalc was updated on September 10, 2026 and Modulo Calculator on September 12, 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.*