Timer 555 Calculator Pro vs Loan Calculator Plus
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
Loan Calculator Plus
Easily calculate loan payments using flat and reducing interest rate methods. Designed for a simple and fast user experience on iPhone and iPad.
- Flat interest rate calculation
- Reducing interest rate calculation
- Simple input interface
- Rapid user experience
- iPhone and iPad optimized design
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Just entering your loan inputs then App will calculate your loan by Flat interest rate method & Reducing interest rate method to let you consider carefully! App has been designed separately for iPhone & iPad to bring the simplest & rapidest experience ever.
Screenshots
Verdict
The clearest difference is review sentiment: Timer 555 Calculator Pro at 100% against Loan Calculator Plus's 67%. Loan Calculator Plus's advantage is update cadence (every 3 days vs every 3 months). On price, ads, in-app purchases and monetization model 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
Timer 555 Calculator Pro costs $0.99 and Loan Calculator Plus $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, Loan Calculator Plus every 3 days. The most recent releases landed on October 23, 2026 and October 4, 2026 respectively.
| Parameter | Timer 555 Calculator Pro | Loan Calculator Plus |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 — better | 14.0 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Dao Duy Quang |
Customer experience
Timer 555 Calculator Pro
Loan Calculator Plus
In-app purchases
Timer 555 Calculator Pro
No in-app purchases
Loan Calculator Plus
No in-app purchases
Questions
Is Timer 555 Calculator Pro free?
Is Loan Calculator Plus free?
Do Timer 555 Calculator Pro or Loan Calculator Plus have ads?
Which is updated more often, Timer 555 Calculator Pro or Loan Calculator Plus?
Other comparisons
