# Calculate84 Plus vs MiaoPiano

The clearest difference is update cadence: MiaoPiano at every 3 weeks against Calculate84 Plus's every 2 months. Calculate84 Plus's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Calculate84 Plus sells 10 in-app purchases, starting at $2.99 per month and MiaoPiano sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Calculate84 Plus ships an update every 2 months, MiaoPiano every 3 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Calculate84 Plus | MiaoPiano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (306 ratings)](https://appshunter.io/ios/app/calculate84-plus/id1472933065/reviews)** | — |
| Number of ratings | **306** | — |
| Positive reviews | 64.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 99 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480) | [Hoang Viet](https://appshunter.io/developer/1752353160) |

## What reviewers say

### Calculate84 Plus

[App page](https://appshunter.io/ios/app/calculate84-plus/id1472933065)

This app provides advanced scientific and graphing calculator functionality. It allows users to plot multiple functions, perform complex mathematical operations, analyze data with statistics, and manage matrices. An optional subscription unlocks even more features.

**Highlights:** Natural textbook equation input, Plot multiple functions with touch controls, Advanced math, number, and probability functions, 1- and 2- Variable statistics, Matrix arithmetic and equation solving, Extensive command catalog

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Yearly | $19.99 | per year |
| HyperCalc - Yearly | $19.99 | per year |
| HyperCalc - Lifetime | $29.99 | one-time |
| HyperCalc - Lifetime | $39.99 | one-time |

**What reviewers like**

- 👍 Similar to TI-84
- 👍 Good for stats
- 👍 Accurate calculations
- 👍 No ads
- 👍 Fresh design

**What reviewers complain about**

- 💰 Many features require payment
- 💰 Not free as advertised
- 💰 Subscription model disliked
- 💰 Lifetime purchase issues
- 💰 Expensive ($30)

**Reported bugs**

- Domain incorrect in y= table
- App closes when pulling up table
- Cannot input negative matrices
- App freezes during IAP search
- Cannot drag functions

**Requested features**

- Dark mode
- Numeric solver (free)
- 2nd function
- Chinese language support
- Tutorial videos


### MiaoPiano

[App page](https://appshunter.io/ios/app/miaopiano/id6504453281)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MiaoPiano 1 month subscription | $2.99 | per month |
| MiaoPiano 1 year subscription | $29.99 | per year |
| Life Time Access | $99.99 | one-time |


## Frequently asked questions

### Is Calculate84 Plus free?

Calculate84 Plus is free to download, with in-app purchases available.

### Is MiaoPiano free?

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

### Do Calculate84 Plus or MiaoPiano have ads?

Neither Calculate84 Plus nor MiaoPiano shows ads.

### Which is updated more often, Calculate84 Plus or MiaoPiano?

Calculate84 Plus ships an update every 2 months, and MiaoPiano every 3 weeks. Most recently, Calculate84 Plus was updated on October 24, 2026 and MiaoPiano on October 19, 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.*