# 555 Timer & Oscillators Pro vs SewSkillz

The clearest difference is price: SewSkillz at Free against 555 Timer & Oscillators Pro's $4.99. SewSkillz also leads on update cadence (every 3 weeks vs every 3 months). 555 Timer & Oscillators Pro's advantage is in-app purchases (none vs 8). On ads, device support and iOS requirement there is nothing between them.

SewSkillz is free to download; 555 Timer & Oscillators Pro costs $4.99 up front. SewSkillz sells 8 one-off in-app purchases. 555 Timer & Oscillators Pro asks for nothing beyond the download.

555 Timer & Oscillators Pro ships an update every 3 months, SewSkillz every 3 weeks. The most recent releases landed on September 24, 2026 and June 20, 2026 respectively.

## The numbers

| Metric | 555 Timer & Oscillators Pro | SewSkillz |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 22 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Riohs Originate](https://appshunter.io/developer/1609456944) |

## What reviewers say

### 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


### SewSkillz

[App page](https://appshunter.io/ios/app/sewskillz/id6676999870)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.99 | one-time |
| Style Surge | $9.99 | one-time |
| Designer's Deluxe | $29.99 | one-time |
| Trendsetter | $29.99 | one-time |
| Creative Saver | $49.99 | one-time |
| Fashion Flash | $49.99 | one-time |
| Style Surge | $99.99 | one-time |
| Designer’s Deluxe | $99.99 | one-time |


## Frequently asked questions

### Is 555 Timer & Oscillators Pro free?

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

### Is SewSkillz free?

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

### Do 555 Timer & Oscillators Pro or SewSkillz have ads?

Neither 555 Timer & Oscillators Pro nor SewSkillz shows ads.

### Which is updated more often, 555 Timer & Oscillators Pro or SewSkillz?

555 Timer & Oscillators Pro ships an update every 3 months, and SewSkillz every 3 weeks. Most recently, 555 Timer & Oscillators Pro was updated on September 24, 2026 and SewSkillz on June 20, 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.*