# Timer 555 Calculator vs 222 Self Storage

The clearest difference is rating: 222 Self Storage at 5.0 against Timer 555 Calculator's 3.9. 222 Self Storage also leads on in-app purchases (none vs 1). Timer 555 Calculator's advantage is update cadence (every 3 months vs every 13 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Timer 555 Calculator sells 1 one-off in-app purchase. 222 Self Storage asks for nothing beyond the download.

222 Self Storage holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 8 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Timer 555 Calculator ships an update every 3 months, 222 Self Storage every 13 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Timer 555 Calculator | 222 Self Storage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/timer-555-calculator/id834044557/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/222-self-storage/id1618619117/reviews)** |
| Number of ratings | **8** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 1 MB |
| Requires iOS | 13.2 | 13.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Reading Berks Storage, LLC.](https://appshunter.io/developer/1447477017) |

## What reviewers say

### Timer 555 Calculator

[App page](https://appshunter.io/ios/app/timer-555-calculator/id834044557)

Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.

**Highlights:** Monostable circuit pulse width calculation, Astable circuit frequency calculation, Component combination finder, Save component values to CSV, Upload CSV via AirDrop/iCloud Drive, Multi-language support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro feature | $0.99 | one-time |


### 222 Self Storage

[App page](https://appshunter.io/ios/app/222-self-storage/id1618619117)

Manage your self-storage account with ease. This app provides location details, payment options, and the ability to rent units directly. Access contact information and get directions to your storage facility.

**Highlights:** Location information, Account payment, Unit rental, Contact details, Directions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Timer 555 Calculator free?

Timer 555 Calculator is free to download, with in-app purchases available.

### Is 222 Self Storage free?

222 Self Storage is free to download, with no in-app purchases.

### Which has better reviews, Timer 555 Calculator or 222 Self Storage?

222 Self Storage is rated higher. Timer 555 Calculator averages 3.9 out of 5 from 8 ratings, while 222 Self Storage averages 5.0 from 4 ratings.

### Do Timer 555 Calculator or 222 Self Storage have ads?

Neither Timer 555 Calculator nor 222 Self Storage shows ads.

### Which is updated more often, Timer 555 Calculator or 222 Self Storage?

Timer 555 Calculator ships an update every 3 months, and 222 Self Storage every 13 months. Most recently, Timer 555 Calculator was updated on October 21, 2026 and 222 Self Storage on October 14, 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.*