# Past Code vs Periodic Table Watch

The clearest difference is price: Past Code at Free against Periodic Table Watch's $0.99. Past Code also leads on update cadence (every 6 days vs every 9 months) and iOS requirement (14.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Past Code is free to download; Periodic Table Watch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Past Code ships an update every 6 days, Periodic Table Watch every 9 months. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Past Code | Periodic Table Watch |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/past-code/id1551535957/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 9 months |
| Monetization | Free | — |
| Size | 32 MB | 6 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Omar Rayyan](https://appshunter.io/developer/1551535959) | [Jim Haungs](https://appshunter.io/developer/1498282259) |

## What reviewers say

### Past Code

[App page](https://appshunter.io/ios/app/past-code/id1551535957)

Instantly find mark schemes for IGCSE and A-Level past papers by scanning their codes with your camera. Save time and effort by accessing the correct resources directly.

**Highlights:** Scan past paper codes with camera, Instant mark scheme retrieval, Supports IGCSE papers, Supports A-Level papers, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Periodic Table Watch

[App page](https://appshunter.io/ios/app/periodic-table-watch/id1551884849)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Past Code free?

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

### Is Periodic Table Watch free?

Periodic Table Watch costs $0.99, with no in-app purchases.

### Do Past Code or Periodic Table Watch have ads?

Neither Past Code nor Periodic Table Watch shows ads.

### Which is updated more often, Past Code or Periodic Table Watch?

Past Code ships an update every 6 days, and Periodic Table Watch every 9 months. Most recently, Past Code was updated on September 26, 2026 and Periodic Table Watch on September 30, 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.*