Timer 555 Calculator vs TouchBESO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer 555 Calculator
Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.
- 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
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This app is used to calculate monostable and astable circuit. Features * Calculate pulse width of monostable circuit * Calculate frequency of astable circuit * Find out combination of components making a desire pulse width in monostable circuit * Find out combination of components making a desire frequency in astable circuit * Saving component values in CSV file * Upload generated CSV files via AirDrop or iCloud Drive * Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Russian
TouchBESO
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TouchBESO is a digital design tool for educational purposes. This tool can generate innovative, lightweight, and efficient 2D structural designs. TouchBESO was developed based on the bi-directional evolutionary structural optimization (BESO) method, which was proposed by Emeritus Professor Yi Min 'Mike' Xie and Professor Xiaodong Huang. Compared with traditional topology optimization tools, TouchBESO allows the user to change loads, supports and other optimization parameters in real-time, helping the user understand the BESO method easily.
Screenshots
Verdict
The clearest difference is in-app purchases: TouchBESO at none against Timer 555 Calculator's 1. TouchBESO also leads on update cadence (every 2 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Timer 555 Calculator sells 1 one-off in-app purchase. TouchBESO asks for nothing beyond the download.
Timer 555 Calculator ships an update every 3 months, TouchBESO every 2 days. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.
| Parameter | Timer 555 Calculator | TouchBESO |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Zhi Li |
In-app purchases
Timer 555 Calculator
- Unlock Pro feature$0.99
TouchBESO
No in-app purchases
Questions
Is Timer 555 Calculator free?
Is TouchBESO free?
Do Timer 555 Calculator or TouchBESO have ads?
Which is updated more often, Timer 555 Calculator or TouchBESO?
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