Timer 555 Calculator Pro vs Quality Welding Time Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer 555 Calculator Pro
Calculate parameters for monostable and astable circuits. Find component combinations for desired pulse width or frequency. Share circuit files via iCloud Drive or AirDrop.
- Calculate monostable pulse width
- Calculate astable frequency
- Find component combinations
- Adjust component tolerance
- Unlimited combinations (Pro)
- Share circuit files
Read full descriptionHide full description
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 * Share file to iCloud Drive (For iOS8 or later) * Share file via AirDrop Additional Features in the Professional Edition * Unlimited number of combinations * Allow to change tolerance * No ads
Quality Welding Time Tracker
This app helps mobile users track their time spent on welding and fabrication tasks. It provides a simple interface for logging work hours for professional or personal projects.
- Time tracking for welding
- Time tracking for fabrication
- Mobile device support
- Simple logging interface
Read full descriptionHide full description
Time tracking for Quality Welding and Fab for mobile devices.
Screenshots
Verdict
The clearest difference is price: Quality Welding Time Tracker at Free against Timer 555 Calculator Pro's $0.99. Timer 555 Calculator Pro's advantage is rating (4.7 vs 1.0) and ratings volume (3 vs 1). On update cadence, ads, in-app purchases and device support 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
Quality Welding Time Tracker is free to download; Timer 555 Calculator Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Timer 555 Calculator Pro holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Timer 555 Calculator Pro ships an update every 3 months, Quality Welding Time Tracker every 2 months. The most recent releases landed on June 4, 2026 and July 10, 2026 respectively.
| Parameter | Timer 555 Calculator Pro | Quality Welding Time Tracker |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (3 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Pixis Consulting LLC |
Customer experience
Timer 555 Calculator Pro
Quality Welding Time Tracker
In-app purchases
Timer 555 Calculator Pro
No in-app purchases
Quality Welding Time Tracker
No in-app purchases
Questions
Is Timer 555 Calculator Pro free?
Is Quality Welding Time Tracker free?
Which has better reviews, Timer 555 Calculator Pro or Quality Welding Time Tracker?
Do Timer 555 Calculator Pro or Quality Welding Time Tracker have ads?
Which is updated more often, Timer 555 Calculator Pro or Quality Welding Time Tracker?
Other comparisons
