# BigCalcMini vs Smart Adding Machine

The clearest difference is update cadence: Smart Adding Machine at every 3 weeks against BigCalcMini's every 2 months. BigCalcMini's advantage is price ($0.99 vs $3.99) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

BigCalcMini costs $0.99 and Smart Adding Machine $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BigCalcMini ships an update every 2 months, Smart Adding Machine every 3 weeks. Both last shipped on September 9, 2026.

## The numbers

| Metric | BigCalcMini | Smart Adding Machine |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 0 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [r2r660cc](https://appshunter.io/developer/372976464) | [Harry Detrick](https://appshunter.io/developer/1698895959) |

## What reviewers say

### BigCalcMini

[App page](https://appshunter.io/ios/app/bigcalcmini/id373058441)

This calculator app features large buttons and a clear, bright display for easy input and visibility, even outdoors. It calculates equations in the order they are entered, unlike some other mobile calculators that prioritize operator precedence.

**Highlights:** Large, easy-to-press buttons, Big, bright display for outdoor visibility, Input order calculation (not operator precedence), Audible key press feedback

**Features:** Vision Pro support

**In-app purchases:** none


### Smart Adding Machine

[App page](https://appshunter.io/ios/app/smart-adding-machine/id6452400755)

**In-app purchases:** none


## Frequently asked questions

### Is BigCalcMini free?

BigCalcMini costs $0.99, with no in-app purchases.

### Is Smart Adding Machine free?

Smart Adding Machine costs $3.99, with no in-app purchases.

### Do BigCalcMini or Smart Adding Machine have ads?

Neither BigCalcMini nor Smart Adding Machine shows ads.

### Which is updated more often, BigCalcMini or Smart Adding Machine?

BigCalcMini ships an update every 2 months, and Smart Adding Machine every 3 weeks. Most recently, BigCalcMini was updated on September 9, 2026 and Smart Adding Machine on September 9, 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.*