# Equip by PC&D vs 555 Timer & Oscillators Guide

The clearest difference is ads: Equip by PC&D at none against 555 Timer & Oscillators Guide's shown. On price, update cadence, 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.

Equip by PC&D ships an update every 3 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Equip by PC&D | 555 Timer & Oscillators Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/equip-by-pc-and-d/id1639907842/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | — |
| Size | 56 MB | 24 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Providence Consulting & Design, LLC](https://appshunter.io/developer/1639907844) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Equip by PC&D

[App page](https://appshunter.io/ios/app/equip-by-pc-and-d/id1639907842)

Access a library of training videos for physical plant maintenance. Order necessary equipment for your facility and easily contact support for any additional needs.

**Highlights:** Training video library, Equipment ordering, Facility maintenance resources, Direct contact support

**Features:** Vision Pro support

**In-app purchases:** none


### 555 Timer & Oscillators Guide

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-guide/id6504487994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Equip by PC&D free?

Equip by PC&D is free to download, with no in-app purchases.

### Is 555 Timer & Oscillators Guide free?

555 Timer & Oscillators Guide is free to download, with no in-app purchases.

### Do Equip by PC&D or 555 Timer & Oscillators Guide have ads?

555 Timer & Oscillators Guide shows ads; Equip by PC&D does not.

### Which is updated more often, Equip by PC&D or 555 Timer & Oscillators Guide?

Equip by PC&D ships an update every 3 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Equip by PC&D was updated on October 24, 2026 and 555 Timer & Oscillators Guide on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*