PCalc Lite vs Firmware Manager for AR.Drone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PCalc Lite
This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.
- Optional RPN mode
- Multiple undo and redo
- Unit conversions and constants
- Two stylish themes
- Apple Watch app
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PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.PCalc Lite is a fully functional and free taste of our very popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design. A great choice for your new iPad! If you like what you see, the full version has many more settings and themes, a paper tape, engineering and scientific notation, and full support for hexadecimal, octal, and binary calculations. You can also now purchase extra features directly from inside PCalc Lite. Buy them individually, or buy everything. Includes an Apple Watch app, so you can calculate on your wrist!
Firmware Manager for AR.Drone
Easily upgrade or downgrade your AR.Drone's firmware to any desired version. Receive notifications when new firmware becomes available for your device. Troubleshoot firmware installation issues by following simple on-device reset instructions.
- Upgrade firmware
- Downgrade firmware
- Any firmware version support
- New firmware notifications
- Firmware reset guide
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Firmware Manager for upgrading and downgrading your AR.Drones firmware to any version. Push notification when new firmware available. If no new firmware is installed after successful transfer and restart of the AR.Drone, press the reset button on the AR.Drone and try again.
Screenshots
Verdict
The clearest difference is rating: PCalc Lite at 4.4 against Firmware Manager for AR.Drone's 3.7. PCalc Lite also leads on review sentiment (82% vs 49%) and ratings volume (214 vs 26). Firmware Manager for AR.Drone's advantage is in-app purchases (none vs 10) and iOS requirement (4.0 vs 15.0). On price, update cadence, ads 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
Both are free to download. PCalc Lite sells 10 one-off in-app purchases. Firmware Manager for AR.Drone asks for nothing beyond the download.
PCalc Lite holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: PCalc Lite has 214 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 82% of PCalc Lite's written reviews are positive against 49% of Firmware Manager for AR.Drone's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.
| Parameter | PCalc Lite | Firmware Manager for AR.Drone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (214 ratings) — better | 3.7 (26 ratings) |
| Positive reviews | 82.5% of reviews — better | 49.0% of reviews |
| Number of ratings | 214 — better | 26 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 4.0 — better |
| Further details — not scored | ||
| Size | 79 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | TLA Systems Ltd. | Max Bäumle |
Customer experience
PCalc Lite
Firmware Manager for AR.Drone
Bugs and requests
PCalc Lite
Reported bugs
3 issues- Calculations sometimes produce unexpected results
- Upside-down text censorship feature is problematic
- Purchased features not always accessible on Apple Watch
Requested features
4 requests- Add option to display thousands separators
- Implement a history function to review past calculations
- Provide more customization options for the widget
- Add support for sexagesimal angle input and conversion
Firmware Manager for AR.Drone
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PCalc Lite
- Theme Pack$0.99
- Power User Pack$0.99
- Multiple Line Pack$0.99
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- Conversion Pack$0.99
- Small Tip$0.99
- Medium Tip$1.99
- Programmer Pack$2.99
- Engineer Pack$2.99
- Large Tip$4.99
- Complete Pack$9.99
Firmware Manager for AR.Drone
No in-app purchases
Questions
Is PCalc Lite free?
Is Firmware Manager for AR.Drone free?
Which has better reviews, PCalc Lite or Firmware Manager for AR.Drone?
Do PCalc Lite or Firmware Manager for AR.Drone have ads?
Which is updated more often, PCalc Lite or Firmware Manager for AR.Drone?
Other comparisons
