# Calculator vs SPMS

The clearest difference is in-app purchases: SPMS at none against Calculator's 2. SPMS also leads on iOS requirement (8.1 vs 26.1). Calculator's advantage is update cadence (every 4 months vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Calculator sells 2 one-off in-app purchases. SPMS asks for nothing beyond the download.

Calculator ships an update every 4 months, SPMS every 11 months. The most recent releases landed on October 20, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Calculator | SPMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculator-all-in-one/id939574640/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | Free | — |
| Size | 5 MB | 51 MB |
| Requires iOS | 26.1 | **8.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Juan Fullana](https://appshunter.io/developer/692107580) | [Advantech](https://appshunter.io/developer/413213069) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-all-in-one/id939574640)

This comprehensive utility app consolidates numerous calculators for scientific, health, date, and unit conversions. It offers a wide array of tools, from basic arithmetic to complex calculations and timers, all within a single application. No internet connection is required for its built-in functions.

**Highlights:** 33+ diverse calculator functions, Scientific, health, and date calculators, Unit and numerical system converters, Timers and clocks, Offline functionality, Mathematical competition game

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation + 1 Extra day. Thanks | $0.99 | one-time |
| No time limit | $1.99 | one-time |


### SPMS

[App page](https://appshunter.io/ios/app/spms/id1278902005)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is SPMS free?

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

### Do Calculator or SPMS have ads?

Neither Calculator nor SPMS shows ads.

### Which is updated more often, Calculator or SPMS?

Calculator ships an update every 4 months, and SPMS every 11 months. Most recently, Calculator was updated on October 20, 2026 and SPMS on October 26, 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.*