# NeuroCal vs String Theory!

The clearest difference is ads: NeuroCal at none against String Theory!'s shown. String Theory!'s advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On price and in-app purchases there is nothing between them.

Both are free to download. NeuroCal sells 3 one-off in-app purchases and String Theory! sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | NeuroCal | String Theory! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/neurocal-weekly-planner/id6754966647/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | — |
| Monetization | Free | — |
| Size | 22 MB | 56 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Romero](https://appshunter.io/developer/828236814) | [Synthify Inc](https://appshunter.io/developer/1089257745) |

## What reviewers say

### NeuroCal

[App page](https://appshunter.io/ios/app/neurocal-weekly-planner/id6754966647)

This planner is designed for individuals who find traditional systems overwhelming. It offers a calm space to capture thoughts and organize them naturally, without pressure or guilt. The app uses a minimalist interface and gentle features to reduce cognitive load and promote mental clarity.

**Highlights:** Natural thought capture, Automatic organization, Calm, minimalist interface, Week Focus Mode, Completed items fade away, Low friction, low anxiety design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |


### String Theory!

[App page](https://appshunter.io/ios/app/string-theory/id6757779491)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $24.99 | per year |
| One Time | $29.99 | one-time |


## Frequently asked questions

### Is NeuroCal free?

NeuroCal is free to download, with in-app purchases available.

### Is String Theory! free?

String Theory! is free to download, with in-app purchases available.

### Do NeuroCal or String Theory! have ads?

String Theory! shows ads; NeuroCal does not.

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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.*