# Constructive Calculator vs HaPi Funny Calculator

The clearest difference is ads: Constructive Calculator at none against HaPi Funny Calculator's shown. Constructive Calculator also leads on update cadence (every 8 days vs monthly). HaPi Funny Calculator's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

Constructive Calculator ships an update every 8 days, HaPi Funny Calculator monthly. The most recent releases landed on July 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Constructive Calculator | HaPi Funny Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/constructive-calculator/id6778157421/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Monthly |
| Monetization | Free | — |
| Size | 1 MB | 22 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Mayorov](https://appshunter.io/developer/6778157423) | [LedaPremium](https://appshunter.io/developer/1896533700) |

## What reviewers say

### 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


### HaPi Funny Calculator

[App page](https://appshunter.io/ios/app/hapi-funny-calculator/id6781326759)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Constructive Calculator free?

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

### Is HaPi Funny Calculator free?

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

### Do Constructive Calculator or HaPi Funny Calculator have ads?

HaPi Funny Calculator shows ads; Constructive Calculator does not.

### Which is updated more often, Constructive Calculator or HaPi Funny Calculator?

Constructive Calculator ships an update every 8 days, and HaPi Funny Calculator monthly. Most recently, Constructive Calculator was updated on July 16, 2026 and HaPi Funny Calculator on September 14, 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.*