# GO vs Formula

The clearest difference is price: Formula at Free against GO's $4.99. Formula also leads on update cadence (fortnightly vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Formula is free to download; GO costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GO ships an update every 6 weeks, Formula fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | GO | Formula |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.7 (23 ratings)](https://appshunter.io/ios/app/go-25-scirpn/id408249517/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Paid | — |
| Size | 18 MB | 2 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Mac, Apple TV** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Steve Lidie](https://appshunter.io/developer/1869780159) | [Rostislav Lyashko](https://appshunter.io/developer/6815340466) |

## What reviewers say

### GO

[App page](https://appshunter.io/ios/app/go-25-scirpn/id408249517)

This app faithfully recreates the HP-25C Programmable Scientific Calculator from 1976. It offers RPN input, a 10-digit LED display, and extensive mathematical functions. Users can program it with up to 99 steps and share programs via various methods.

**Highlights:** RPN input, 10-digit LED display, Four stack registers, Ten storage registers, Extensive math functions, 99-step programmability, Program import/export

**Features:** Vision Pro support

**In-app purchases:** none


### Formula

[App page](https://appshunter.io/ios/app/formula-editable-calculator/id6815340464)

**In-app purchases:** none


## Frequently asked questions

### Is GO free?

GO costs $4.99, with no in-app purchases.

### Is Formula free?

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

### Do GO or Formula have ads?

Neither GO nor Formula shows ads.

### Which is updated more often, GO or Formula?

GO ships an update every 6 weeks, and Formula fortnightly. Most recently, GO was updated on November 1, 2026 and Formula on October 31, 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.*