# iPTE vs Equation

The clearest difference is price: Equation at Free against iPTE's $1.99. Equation also leads on update cadence (monthly vs every 9 months). iPTE's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.1). On in-app purchases and device support there is nothing between them.

Equation is free to download; iPTE costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iPTE ships an update every 9 months, Equation monthly. The most recent releases landed on November 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | iPTE | Equation |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Paid | — |
| Size | 98 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [建锋 宋](https://appshunter.io/developer/1098794568) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### iPTE

[App page](https://appshunter.io/ios/app/ipte/id1502419058)

Explore the periodic table with extensive data on chemical elements and over 5500 isotopes. Features include element images, electron configurations, discovery history, and a solubility chart. Ideal for students, teachers, and science enthusiasts.

**Highlights:** Extensive element data, Over 5500 isotopes, Solubility chart, Element images and electron configurations, Discovery history, Search functionality

**Features:** Vision Pro support

**In-app purchases:** none


### Equation

[App page](https://appshunter.io/ios/app/equation-solver/id1618982230)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iPTE free?

iPTE costs $1.99, with no in-app purchases.

### Is Equation free?

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

### Do iPTE or Equation have ads?

Equation shows ads; iPTE does not.

### Which is updated more often, iPTE or Equation?

iPTE ships an update every 9 months, and Equation monthly. Most recently, iPTE was updated on November 3, 2026 and Equation on October 12, 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.*