# Learn Blockchain Programming vs 555 Timer & Oscillators Pro

The clearest difference is update cadence: 555 Timer & Oscillators Pro at every 3 months against Learn Blockchain Programming's every 9 months. Learn Blockchain Programming's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Learn Blockchain Programming costs $4.99 and 555 Timer & Oscillators Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn Blockchain Programming ships an update every 9 months, 555 Timer & Oscillators Pro every 3 months. The most recent releases landed on September 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Learn Blockchain Programming | 555 Timer & Oscillators Pro |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 63 MB | 22 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Learn Blockchain Programming

[App page](https://appshunter.io/ios/app/learn-blockchain-programming/id6443554479)

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

**In-app purchases:** none


### 555 Timer & Oscillators Pro

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-pro/id6504415162)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Learn Blockchain Programming free?

Learn Blockchain Programming costs $4.99, with no in-app purchases.

### Is 555 Timer & Oscillators Pro free?

555 Timer & Oscillators Pro costs $4.99, with no in-app purchases.

### Do Learn Blockchain Programming or 555 Timer & Oscillators Pro have ads?

Neither Learn Blockchain Programming nor 555 Timer & Oscillators Pro shows ads.

### Which is updated more often, Learn Blockchain Programming or 555 Timer & Oscillators Pro?

Learn Blockchain Programming ships an update every 9 months, and 555 Timer & Oscillators Pro every 3 months. Most recently, Learn Blockchain Programming was updated on September 25, 2026 and 555 Timer & Oscillators Pro on October 1, 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.*