# iformula pro vs Circuit

The clearest difference is review sentiment: iformula pro at 56% against Circuit's 0%. iformula pro also leads on price ($2.99 vs $5.99). Circuit's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 4 months). On ads, monetization model and device support there is nothing between them.

iformula pro costs $2.99 and Circuit $5.99 up front. iformula pro sells 1 one-off in-app purchase. Circuit asks for nothing beyond the download.

iformula pro ships an update every 4 months, Circuit every 5 weeks. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | iformula pro | Circuit |
| --- | --- | --- |
| Price | **$2.99** | $5.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/iformula-pro/id327888781/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **55.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 88 MB | 31 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Tobias Werner](https://appshunter.io/developer/325337278) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### iformula pro

[App page](https://appshunter.io/ios/app/iformula-pro/id327888781)

This comprehensive math learning platform offers over 4000 equations and functions across various advanced topics. It features a powerful search, a scientific calculator, note-taking, and bookmarking capabilities to aid academic study and professional reference.

**Highlights:** Over 4000 math equations, Full-featured equation search, New scientific calculator, Notes system, Bookmarking for favorite equations, Dual language support (English & German)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| draw function graph | $0.99 | one-time |


### Circuit

[App page](https://appshunter.io/ios/app/circuit-design-pro/id1618696811)

Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, resistor calculations, and network conversions. Learn simplification steps graphically and study key electrical laws.

**Highlights:** Design and analyze electrical circuits, Solve resistor, capacitor, and inductor networks, Simplify complex circuit diagrams step-by-step, Convert between delta and wye networks, Convert between current and voltage sources, Design or find resistor values, Study electrical laws and formulas

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

**In-app purchases:** none


## Frequently asked questions

### Is iformula pro free?

iformula pro costs $2.99, and also offers in-app purchases.

### Is Circuit free?

Circuit costs $5.99, with no in-app purchases.

### Do iformula pro or Circuit have ads?

Neither iformula pro nor Circuit shows ads.

### Which is updated more often, iformula pro or Circuit?

iformula pro ships an update every 4 months, and Circuit every 5 weeks. Most recently, iformula pro was updated on September 11, 2026 and Circuit on September 8, 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.*