AC Calculator vs Smart Firelog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AC Calculator
This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.
- Calculate BTU/h capacity
- Recommend equipment types
- Convert BTU, kW, Kcal, Tons
- Check price estimates
- Compare inverter vs. conventional
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AC Calculator makes HVAC sizing simple. Quickly calculate BTU/h capacity, get recommended equipment types, convert between BTU, kW, Kcal and Tons, check up-to-date price estimates, and compare inverter vs. conventional energy consumption. Unlock professional-grade features anytime with in-app purchases.
Smart Firelog
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Smart Firelog helps you manage fire safety systems efficiently and in real time. Key Features: • Scan NFC tags to instantly identify devices • Track inspections and maintenance history • Monitor fire panels, emergency lights, and safety equipment • View device status and fault reports • Organize buildings and locations • Stay compliant with safety checks and logs Designed for technicians and facility managers who need a fast and reliable fire safety management tool. Simple. Fast. Reliable.
Screenshots
Verdict
The clearest difference is in-app purchases: Smart Firelog at none against AC Calculator's 2. Smart Firelog also leads on update cadence (daily vs every 4 months). On price, ads, 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
Both are free to download. AC Calculator sells 2 one-off in-app purchases. Smart Firelog asks for nothing beyond the download.
AC Calculator ships an update every 4 months, Smart Firelog daily. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | AC Calculator | Smart Firelog |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (20 ratings) — better | — |
| Number of ratings | 20 — better | — |
| Update frequency | Every 4 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Melchisedec Martinez Rodriguez | monitored247 |
In-app purchases
AC Calculator
- Unlock View details$4.99
- Unlock Advanced mode$9.99
Smart Firelog
No in-app purchases
Questions
Is AC Calculator free?
Is Smart Firelog free?
Do AC Calculator or Smart Firelog have ads?
Which is updated more often, AC Calculator or Smart Firelog?
Other comparisons
