# Strings Conferences vs DeepFocus Study

The clearest difference is update cadence: DeepFocus Study at weekly against Strings Conferences's every 11 months. Strings Conferences's advantage is iOS requirement (12.0 vs 15.0). On price, ads, 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.

Strings Conferences ships an update every 11 months, DeepFocus Study weekly. The most recent releases landed on September 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Strings Conferences | DeepFocus Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/strings-conferences/id448664822/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuji Tachikawa](https://appshunter.io/developer/378764358) | [Vladyslav Lavreniuk](https://appshunter.io/developer/1885541469) |

## What reviewers say

### Strings Conferences

[App page](https://appshunter.io/ios/app/strings-conferences/id448664822)

Explore two decades of String Theory progress through conference slides. Easily navigate presentations from 1998 to 2025 on your iPad.

**Highlights:** Access conference slides, Navigate presentations, String Theory content, Historical data (1998-2025), iPad optimized

**Features:** macOS Compatibility

**In-app purchases:** none


### DeepFocus Study

[App page](https://appshunter.io/ios/app/deepfocus-study/id6760655791)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Strings Conferences free?

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

### Is DeepFocus Study free?

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

### Do Strings Conferences or DeepFocus Study have ads?

Neither Strings Conferences nor DeepFocus Study shows ads.

### Which is updated more often, Strings Conferences or DeepFocus Study?

Strings Conferences ships an update every 11 months, and DeepFocus Study weekly. Most recently, Strings Conferences was updated on September 24, 2026 and DeepFocus Study on October 11, 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.*