# 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 (every 2 weeks 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 every 2 weeks. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Decipher Physics | Qedra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 48 MB | 23 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-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 every 2 weeks. Most recently, Decipher Physics was updated on October 25, 2026 and Qedra on October 22, 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.*