Timer 555 Calculator Pro vs 凯力朗智能
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
凯力朗智能
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The software controls the device through the mobile phone to realize remote control. It can control the telescopic expansion of the car pedal, the light of the pedal light, and the color and brightness. At the same time, it supports the mobile phone and the remote control to control the Bluetooth device and control the brightness change of the light color. More than 200 modes to choose, support streamer colorful, turn to streamer, support speed, brightness, pixel point adjustment; support electric trailer hook, electric sliding door;
Screenshots
Verdict
The clearest difference is price: 凯力朗智能 at Free against Timer 555 Calculator Pro's $0.99. 凯力朗智能 also leads on iOS requirement (8.0 vs 13.2). 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
凯力朗智能 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, 凯力朗智能 every 5 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Timer 555 Calculator Pro | 凯力朗智能 |
|---|---|---|
| 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 — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 | 8.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Wenzhou Yunjia Network Technology Co., Ltd. |
In-app purchases
Timer 555 Calculator Pro
No in-app purchases
凯力朗智能
No in-app purchases
Questions
Is Timer 555 Calculator Pro free?
Is 凯力朗智能 free?
Which has better reviews, Timer 555 Calculator Pro or 凯力朗智能?
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