FastCalc lite vs Nixie Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastCalc lite
This calculator app offers a streamlined experience with large, easy-to-use keys and a permanent display of your calculations. It automatically shows results as you type, eliminating the need for an equals button.
- Large, easy-to-read keys
- Permanent expression display
- Automatic result display
- Gesture-based interface
- Integrated help videos
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FastCalc lite is a calculator recognized for its efficiency and ease of use. It stands out thanks to: • its large keys, which allow for fast and accurate input, • the permanent display of the expression entered by the user, • the automatic display of the result while typing: no “=” key required! FastCalc lite is thus a simple and efficient calculator, ideal for everyday calculations. BASICS OF USE The interface of FastCalc lite is innovative and minimalist, entirely based on simple gestures: • Select a side symbol on a key: slide your finger in its direction. • Delete the last entered elements: make a small swipe to the left on the display. • Clear the entire expression: swipe quickly to the left across the whole display. FEATURES • Large, practical, and easy-to-read keys. • Permanent display of the current expression. • Integrated help videos and user guide (in ⓘ).
Nixie Calculator
This calculator app features a digital paper tape to display entries, which can be copied or shared. It offers various customization options like color schemes, rounding, and display modes, blending retro aesthetics with modern device technology.
- Paper tape for entry display
- Copy and paste functionality
- Customizable color schemes
- Adjustable rounding and exponential modes
- Classic Nixie font option
- Thousand separator styles
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Features of Nixie Calculator: • Paper tape to display what you have entered. Can be copied or shared • Copy and paste entries Settings available: • Color schemes • Color layouts (in-app purchase) • Rounding options • Exponential modes • Use classic Nixie font for the display • Separators embedded with the digits • Classic pyramid and illuminated thousand separators • Classic red filter The calculator is a rounding or truncating type to fit numbers into the fixed display. Please enjoy this calculator that combines one of the first display technologies with state of the art in phone and tablet technology.
Screenshots
Verdict
The clearest difference is rating: Nixie Calculator at 4.9 against FastCalc lite's 3.8. Nixie Calculator also leads on update cadence (monthly vs every 5 months) and iOS requirement (15.0 vs 26.0). FastCalc lite's advantage is in-app purchases (none vs 1). On price, review sentiment, ratings volume and ads 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. Nixie Calculator sells 1 one-off in-app purchase. FastCalc lite asks for nothing beyond the download.
Nixie Calculator holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 15 and 15 respectively. Written reviews complicate that: 73% of FastCalc lite's written reviews are positive against 67% of Nixie Calculator's, so the app with the better star average is not the one people write more warmly about.
FastCalc lite ships an update every 5 months, Nixie Calculator monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | FastCalc lite | Nixie Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (15 ratings) | 4.9 (15 ratings) — better |
| Positive reviews | 73.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 15 | 15 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Ponzo | UNB SYSTEMS PTY LTD |
Customer experience
FastCalc lite
Nixie Calculator
In-app purchases
FastCalc lite
No in-app purchases
Nixie Calculator
- Color Layouts$2.99









