Timer 555 Calculator Pro vs Netility
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
Netility
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Netility can help you search for Megatec’s device LAN IP. The APP and device in question must be connected to the same router. Once the device is found, user can also use APP to reset the device to factory default.
Screenshots
Verdict
The clearest difference is price: Netility at Free against Timer 555 Calculator Pro's $0.99. Netility also leads on update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases, 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
Netility 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, Netility every 3 weeks. The most recent releases landed on June 4, 2026 and May 16, 2026 respectively.
| Parameter | Timer 555 Calculator Pro | Netility |
|---|---|---|
| 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 | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.2 | 12.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Mega System Technologies Inc. |
In-app purchases
Timer 555 Calculator Pro
No in-app purchases
Netility
No in-app purchases
Questions
Is Timer 555 Calculator Pro free?
Is Netility free?
Do Timer 555 Calculator Pro or Netility have ads?
Which is updated more often, Timer 555 Calculator Pro or Netility?
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