# OffCalc vs Dirim

The clearest difference is in-app purchases: Dirim at none against OffCalc's 1. Dirim also leads on update cadence (every 2 months vs every 12 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. OffCalc sells 1 one-off in-app purchase. Dirim asks for nothing beyond the download.

OffCalc ships an update every 12 months, Dirim every 2 months. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OffCalc | Dirim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (24 ratings)](https://appshunter.io/ios/app/offcalc-discount-calculator/id1095824942/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 1 MB | 82 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Teboul](https://appshunter.io/developer/317689556) | [Lootah](https://appshunter.io/developer/1788071765) |

## What reviewers say

### OffCalc

[App page](https://appshunter.io/ios/app/offcalc-discount-calculator/id1095824942)

Quickly determine final prices after applying discounts. Input the original price and the discount percentage to see the sale price in seconds.

**Highlights:** Instant discount calculation, Enter original price, Apply discount percentage, View final sale price

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ad | $0.99 | one-time |


### Dirim

[App page](https://appshunter.io/ios/app/dirim/id6742146843)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OffCalc free?

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

### Is Dirim free?

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

### Do OffCalc or Dirim have ads?

Neither OffCalc nor Dirim shows ads.

### Which is updated more often, OffCalc or Dirim?

OffCalc ships an update every 12 months, and Dirim every 2 months. Most recently, OffCalc was updated on October 21, 2026 and Dirim on October 16, 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.*