# Decipher Physics vs Qedra

The clearest difference is ads: Decipher Physics at none against Qedra's shown. Decipher Physics also leads on iOS requirement (15.0 vs 18.0). Qedra's advantage is update cadence (fortnightly vs monthly). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Decipher Physics ships an update monthly, Qedra fortnightly. The most recent releases landed on September 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Decipher Physics | Qedra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Size | 48 MB | 22 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Lione](https://appshunter.io/developer/1843340454) | [Matthew Wong](https://appshunter.io/developer/6774040057) |

## What reviewers say

### Decipher Physics

[App page](https://appshunter.io/ios/app/decipher-physics/id6754386558)

**Features:** macOS Compatibility

**In-app purchases:** none


### Qedra

[App page](https://appshunter.io/ios/app/qedra-university-math-solver/id6803934326)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decipher Physics free?

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

### Is Qedra free?

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

### Do Decipher Physics or Qedra have ads?

Qedra shows ads; Decipher Physics does not.

### Which is updated more often, Decipher Physics or Qedra?

Decipher Physics ships an update monthly, and Qedra fortnightly. Most recently, Decipher Physics was updated on September 18, 2026 and Qedra on October 5, 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.*