# OmniCounter vs Constructive Calculator

The clearest difference is in-app purchases: Constructive Calculator at none against OmniCounter's 10. Constructive Calculator also leads on update cadence (every 8 days vs every 4 months). OmniCounter's advantage is ratings volume (4 vs 1) and device support (3 vs 1). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. OmniCounter sells 10 one-off in-app purchases. Constructive Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for OmniCounter against 5.0 for Constructive Calculator. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

OmniCounter ships an update every 4 months, Constructive Calculator every 8 days. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | OmniCounter | Constructive Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/omnicounter/id1569846314/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/constructive-calculator/id6778157421/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 14 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [留传 于](https://appshunter.io/developer/1569844705) | [Dmitriy Mayorov](https://appshunter.io/developer/6778157423) |

## What reviewers say

### OmniCounter

[App page](https://appshunter.io/ios/app/omnicounter/id1569846314)

This app is a comprehensive calculator with support for basic, scientific, and advanced mathematical functions. It features a customizable keyboard, multiple input bases, and expression beautification. Enjoy a powerful, ad-free calculation experience.

**Highlights:** Supports over a dozen computing categories, Customizable keyboard with auto-completion, Multiple input bases (binary, octal, decimal, hex), Beautified input expressions, Optional historical features, Copy inputs and outputs

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Datetime | $0.99 | one-time |
| Calculus | $2.99 | one-time |
| Combinatorics | $2.99 | one-time |
| Economics | $2.99 | one-time |
| Geometry | $2.99 | one-time |
| Matrix & Vector | $2.99 | one-time |
| SpecialFunction | $2.99 | one-time |
| NumberTheory | $2.99 | one-time |
| Statistics | $2.99 | one-time |
| Trigonometry | $2.99 | one-time |


### Constructive Calculator

[App page](https://appshunter.io/ios/app/constructive-calculator/id6778157421)

This calculator performs calculations with arbitrary precision, avoiding rounding errors common in standard calculators. It provides an extensive scientific keypad and can display an unlimited number of digits for exact results.

**Highlights:** Arbitrary-precision calculations, Unlimited digit display, Scientific keypad, Exact results for large numbers, Running tape of calculations, Locale-aware digit grouping

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OmniCounter free?

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

### Is Constructive Calculator free?

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

### Which has better reviews, OmniCounter or Constructive Calculator?

OmniCounter and Constructive Calculator are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do OmniCounter or Constructive Calculator have ads?

Neither OmniCounter nor Constructive Calculator shows ads.

### Which is updated more often, OmniCounter or Constructive Calculator?

OmniCounter ships an update every 4 months, and Constructive Calculator every 8 days. Most recently, OmniCounter was updated on October 4, 2026 and Constructive Calculator on October 5, 2026.

---

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