# FormulizeIT Formula Calculator vs Custom Formulas

The clearest difference is rating: Custom Formulas at 5.0 against FormulizeIT Formula Calculator's 3.8. Custom Formulas also leads on review sentiment (100% vs 78%) and update cadence (every 5 days vs every 11 days). FormulizeIT Formula Calculator's advantage is ratings volume (8 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

FormulizeIT Formula Calculator costs $4.99 and Custom Formulas $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Custom Formulas holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: FormulizeIT Formula Calculator has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 78% of FormulizeIT Formula Calculator's written reviews are positive against 100% of Custom Formulas's.

FormulizeIT Formula Calculator ships an update every 11 days, Custom Formulas every 5 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FormulizeIT Formula Calculator | Custom Formulas |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/formulizeit-formula-calculator/id848267869/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/custom-formulas/id1623368630/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 78.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 3 MB | 1 MB |
| Requires iOS | **15.0** | 15.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Auro Information Technology Co., Ltd](https://appshunter.io/developer/848267872) | [Anthony Dunk](https://appshunter.io/developer/704471943) |

## What reviewers say

### FormulizeIT Formula Calculator

[App page](https://appshunter.io/ios/app/formulizeit-formula-calculator/id848267869)

Create custom calculators from your own formulas. Save and reuse them for quick calculations like project quotes or discounts. Supports offline use and local storage.

**Highlights:** Create, edit, save, and delete custom formulas, Define variables with display names and default values, Reuse saved defaults and copy results, Supports mathematical functions including square roots, Light/dark mode and language settings, Offline formula editing and calculation, Local data storage, no account required

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

**In-app purchases:** none


### Custom Formulas

[App page](https://appshunter.io/ios/app/custom-formulas/id1623368630)

This utility app allows users to create and manage complex calculations with multiple inputs and outputs. Formulas can be linked, grouped into categories, and customized for display precision. Share your custom calculations easily via email.

**Highlights:** Multiple input/output formula support, Linked formulas via variable names, Formula categorization, Customizable variable display order, Adjustable output decimal precision, Email formula sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is FormulizeIT Formula Calculator free?

FormulizeIT Formula Calculator costs $4.99, with no in-app purchases.

### Is Custom Formulas free?

Custom Formulas costs $3.99, with no in-app purchases.

### Which has better reviews, FormulizeIT Formula Calculator or Custom Formulas?

Custom Formulas is rated higher. FormulizeIT Formula Calculator averages 3.8 out of 5 from 8 ratings, while Custom Formulas averages 5.0 from 1 ratings.

### Do FormulizeIT Formula Calculator or Custom Formulas have ads?

Neither FormulizeIT Formula Calculator nor Custom Formulas shows ads.

### Which is updated more often, FormulizeIT Formula Calculator or Custom Formulas?

FormulizeIT Formula Calculator ships an update every 11 days, and Custom Formulas every 5 days. Most recently, FormulizeIT Formula Calculator was updated on November 6, 2026 and Custom Formulas on November 3, 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.*