Olarm vs Calculator VAT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Olarm
Control and manage your home alarm system directly from your smartphone. This app allows you to arm, disarm, and monitor your system in real-time, receive notifications, and manage users. It also offers features like silent panic and gate control.
- Arm, Disarm, Sleep, Stay modes
- Arming reminders
- Real-time zone activity log
- Silent Panic
- Cancel Responder
- User management
- Gate and light control
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This is the companion app to the Olarm device. Plug and play into your existing home alarm system and you can control and manage your home alarm system from your phone. Please visit our website for more information. Features: - Set your alarm system to Arm, Disarm, Sleep or Stay - Set reminders to arm your system - Real-time zone activity log and notifications - Silent Panic - Cancel Responder - User management - Monitor electric fence - Control gates and lights
Calculator VAT
Quickly calculate VAT, net price, tax, or price inclusive of tax. Supports any two input values to find the remaining two. Also handles general percentage and tip calculations with commercial rounding.
- Calculate VAT, net price, and tax
- Handles price inclusive of tax
- General percentage and tip calculator
- Commercial rounding of results
- Save VAT value for multiple calculations
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Enter any two values (of: VAT, netPrice, tax, price inclusive tax) and get the other two values calculated. Any other percent or tip calculation is possible. Results are commercially rounded. A button keeps the VAT value for multiple calculations.
Screenshots
Verdict
The clearest difference is review sentiment: Calculator VAT at 100% against Olarm's 54%. Olarm's advantage is price (Free vs $0.99) and update cadence (every 3 weeks vs every 3 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
Olarm is free to download; Calculator VAT costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Olarm ships an update every 3 weeks, Calculator VAT every 3 months. Both last shipped on October 21, 2026.
| Parameter | Olarm | Calculator VAT |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.9 (32 ratings) — better | — |
| Positive reviews | 54.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 32 — better | — |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Olarm (Pty) Ltd | Ulrich Pade |
Customer experience
Olarm
Calculator VAT
In-app purchases
Olarm
No in-app purchases
Calculator VAT
No in-app purchases
Questions
Is Olarm free?
Is Calculator VAT free?
Do Olarm or Calculator VAT have ads?
Which is updated more often, Olarm or Calculator VAT?
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