Lambda vs Domino Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lambda
This app helps musicians and sound engineers convert between musical notes, frequencies, and wavelengths. It features a dynamic fader, built-in oscillator, and frequency tracker with waveform display. Customize tuning standards and speed of sound for precise audio analysis.
- Convert notes, frequencies, wavelengths
- Dynamic fader for real-time adjustment
- Built-in oscillator with waveform
- Frequency tracker with waveform
- Customizable tuning standards
- Adjustable speed of sound
- Share data via standard methods
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Musicians and Sound Engineers. Musical Notes and Frequencies and Wavelengths. Now there's an app from dgApps to convert between them all. The app features a sliding fader to dynamically change frequency, wavelength and musical note, with locks to step through standard third octave frequencies or whole musical notes. There's a built in oscillator so you can hear the frequency, and a frequency tracker so the app can tell you the frequency. Both the oscillator and the frequency tracker display the audio waveform. A settings section allows for different tuning standards, and variations in the speed of sound. Lambda can also receive calculated Speed of Sound in Air values from another dgApps app, Cair. Lambda is now a universal app, equally at home on an iPhone as on an iPad. In Split Mode on an iPad device, side by side with Cair, the calculated Speed of Sound in Air is passed in real time to the Lambda app. Lambda allows you to share frequency/wavelength/note data via all the usual sharing methods.
Domino Scanner
Effortlessly count points in your domino games by scanning up to 12 tiles at once. Optimize scanning by arranging tiles closely on a dark surface and selecting your lighting conditions. Supports multiple languages for a global gaming experience.
- Scan up to 12 dominos
- Quick point calculation
- Optimized scanning surface guidance
- Adjustable lighting settings
- Multi-language support
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Scan up to 12 dominos at once. Place white Dominos on a dark (preferably black), opaque surface for best results. Arrange dominos close together to quicken scanning speed. Select your current source of light. If you love playing Dominos, you'll love Domino Scanner! Available in: English, Spanish, French, Chinese (Simplified), Japanese, Arabic, and Portuguese
Screenshots
Verdict
The clearest difference is review sentiment: Lambda at 80% against Domino Scanner's 45%. Lambda also leads on rating (5.0 vs 4.6) and price ($2.99 vs $4.99). Domino Scanner's advantage is ratings volume (358 vs 1). On update cadence, 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
Lambda costs $2.99 and Domino Scanner $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Lambda holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Domino Scanner has 358 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Lambda's written reviews are positive against 45% of Domino Scanner's.
Lambda ships an update every 54 months, Domino Scanner every 53 months. The most recent releases landed on September 17, 2026 and October 4, 2026 respectively.
| Parameter | Lambda | Domino Scanner |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 5.0 (1 ratings) — better | 4.6 (358 ratings) |
| Positive reviews | 80.0% of reviews — better | 45.0% of reviews |
| Number of ratings | 1 | 358 — better |
| Update frequency | Every 54 months | Every 53 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.4 |
| Further details — not scored | ||
| Size | 6 MB | 28 MB |
| Age rating | 4+ | 9+ |
| Developer | dgApps | Clarity |
Customer experience
Lambda
Domino Scanner
Bugs and requests
Lambda
Not enough reviews yet to summarise bugs or requests.
Domino Scanner
Reported bugs
12 issues- Fails to add up pips
- Counts the same tiles differently
- Misses pips
- Includes additional pips not there
- Too many mistakes
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- Inaccurate scan
- Very slow
- Doesn’t count all the domino dots
- Counts reflections on the table
- Counts random points that weren’t there
- Does not scan too well
- Does not recognize all dominoes
Requested features
6 requests- Add player photos to profiles
- Keep game histories
- Option to adjust total (add/subtract)
- Reset to original scan button
- Add score keeping for players
Show 1 moreShow fewer
- Include actual game score functionality
In-app purchases
Lambda
No in-app purchases
Domino Scanner
No in-app purchases
Questions
Is Lambda free?
Is Domino Scanner free?
Which has better reviews, Lambda or Domino Scanner?
Do Lambda or Domino Scanner have ads?
Which is updated more often, Lambda or Domino Scanner?
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