# Custom Formulas vs Numeri

The clearest difference is price: Numeri at Free against Custom Formulas's $3.99. Custom Formulas's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

Numeri is free to download; Custom Formulas costs $3.99 up front. Numeri sells 2 in-app purchases, starting at $3.99 per month. Custom Formulas asks for nothing beyond the download.

Custom Formulas ships an update every 5 days, Numeri every 2 months. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Custom Formulas | Numeri |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/custom-formulas/id1623368630/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Paid | — |
| Best chart rank | **#186** | — |
| Size | 1 MB | 4 MB |
| Requires iOS | **15.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anthony Dunk](https://appshunter.io/developer/704471943) | [Alexey Kruhlik](https://appshunter.io/developer/1788687034) |

## What reviewers say

### Custom Formulas

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

**Currently charting:** #186 Top Paid · Utilities (US App Store)

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


### Numeri

[App page](https://appshunter.io/ios/app/numeri-notepad-calculator/id6752167937)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is Custom Formulas free?

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

### Is Numeri free?

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

### Do Custom Formulas or Numeri have ads?

Neither Custom Formulas nor Numeri shows ads.

### Which is updated more often, Custom Formulas or Numeri?

Custom Formulas ships an update every 5 days, and Numeri every 2 months. Most recently, Custom Formulas was updated on September 18, 2026 and Numeri on September 15, 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.*