Timer 555 Calculator Pro vs 武威慧停车
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
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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 * 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
武威慧停车
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武威慧停车产品集web端、移动手机端、后台运营端、移动巡检端、停车诱导屏等于一体，建立停车信息共享应用平台，实时发布泊位空闲信息诱导车辆的停泊路线，充分利用手机等自媒体移动设备方便、灵活、高效率等特点，使用户通过手机app、微信等手段随时随地掌握泊位动态信息和车辆停泊信息，并提供车位导航、预定等功能，真正实现全面、绿色、高效的静态交通管理及智能行车引导。
Screenshots
Verdict
The clearest difference is price: 武威慧停车 at Free against Timer 555 Calculator Pro's $0.99. 武威慧停车 also leads on iOS requirement (9.0 vs 13.2). Timer 555 Calculator Pro's advantage is update cadence (every 3 months vs every 11 months). On 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
武威慧停车 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 ships an update every 3 months, 武威慧停车 every 11 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.
| Parameter | Timer 555 Calculator Pro | 武威慧停车 |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.2 | 9.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | 松立控股集团股份有限公司 |
In-app purchases
Timer 555 Calculator Pro
No in-app purchases
武威慧停车
No in-app purchases
Questions
Is Timer 555 Calculator Pro free?
Is 武威慧停车 free?
Do Timer 555 Calculator Pro or 武威慧停车 have ads?
Which is updated more often, Timer 555 Calculator Pro or 武威慧停车?
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