# 555 Timer & Oscillators Guide vs Bench Reference

The clearest difference is price: 555 Timer & Oscillators Guide at Free against Bench Reference's $4.99. 555 Timer & Oscillators Guide also leads on iOS requirement (16.0 vs 26.2). Bench Reference's advantage is ads (none vs shown) and update cadence (weekly vs every 5 months). On in-app purchases and device support there is nothing between them.

555 Timer & Oscillators Guide is free to download; Bench Reference costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

555 Timer & Oscillators Guide ships an update every 5 months, Bench Reference weekly. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 555 Timer & Oscillators Guide | Bench Reference |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/bench-reference/id6757015545/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | — | Paid |
| Best chart rank | — | **#188** |
| Size | 24 MB | 3 MB |
| Requires iOS | **16.0** | 26.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Aaron brown](https://appshunter.io/developer/1864220001) |

## What reviewers say

### 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


### Bench Reference

[App page](https://appshunter.io/ios/app/bench-reference/id6757015545)

**Currently charting:** #188 Top Paid · Education (US App Store)

This professional jeweler's reference guide provides comprehensive information on gemstones, metals, and bench techniques. It includes calculators for pricing, measurements, and 3D printing, along with a personal library and learning tools. Essential for jewelers needing quick access to data and procedures without an internet connection.

**Highlights:** Gemstone and material reference, Bench technique guides, Metal properties and working notes, Repair procedures, Measurement and data conversions, Professional calculators, Personal library system

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

**In-app purchases:** none


## Frequently asked questions

### Is 555 Timer & Oscillators Guide free?

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

### Is Bench Reference free?

Bench Reference costs $4.99, with no in-app purchases.

### Do 555 Timer & Oscillators Guide or Bench Reference have ads?

555 Timer & Oscillators Guide shows ads; Bench Reference does not.

### Which is updated more often, 555 Timer & Oscillators Guide or Bench Reference?

555 Timer & Oscillators Guide ships an update every 5 months, and Bench Reference weekly. Most recently, 555 Timer & Oscillators Guide was updated on October 19, 2026 and Bench Reference on October 25, 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.*