Sing vs Phaser Factory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sing
Visualize your singing or instrument playing pitch with a color-coded graph. This app analyzes audio input to show if you are on, sharp, or flat, helping you train your ear for accurate intonation.
- Color-coded pitch graph
- Real-time audio analysis
- Visualizes pitch accuracy
- Supports singing and instruments
- Pitch frequency spectrum display
- Monophonic pitch detection
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Can you sing in tune? Learn to sing (or play an instrument) accurately in tune with HotPaw Sing-inTuna's color-coded pitch graph. Sing-inTuna uses the built-in microphone on your iPhone or iPad to analyze and help you visualize if you are singing, or playing a musical instrument (such as a violin), precisely on the right pitch. It graphs pitch on a scrolling graph resembling a musical Grand Staff. Tones that are on-pitch (+-20 cents) are colored green; notes slightly sharp: red; notes a pinch flat: blue. You can also display an optional pitch frequency spectrum of your voice to see your timbre. Sing-inTuna requires a quiet environment with no accompaniment or harmony, and monophonic pitches that are at least a quarter second long. The pitch range using the built-in mic is about +-2 octaves from middle-C, depending on microphone use, loudness, and timbre. Note: This app produces no sounds and shows no sheet music. It only listens so that you can see your pitch, and how well your pitch matches that of a well tuned equal-temperament instrument.
Phaser Factory
Create custom phaser effects with this versatile audio plugin. Design unique sounds by adjusting stages, LFO, and feedback, and save your favorite presets. Developers can even export C++ code for their projects.
- Customizable phaser effects
- Adjustable number of stages (1-20)
- LFO width and offset control
- Feedback chain configuration
- Save and recall presets
- Export C++ class for developers
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GSi Phaser Factory is a versatile phase shifter effect in the likes of some famous guitar pedals such as the Phase 90, the Small Stone, and stuff like that. With Phaser Factory you can create your own phaser and even try to "clone" an existing model. Select the number of phase shifting stages, from 1 up to 20! Set the LFO width and offset. Configure the feedback chain, the output mix and the summing stages. The algorithm is simple and efficient, once you get the perfect vibe, save your presets. And if you're a plugin developer, you can even export a C++ Class that you can use in your project to play the exact preset you've created in Phaser Factory. Phaser Factory is not only a phaser, it's all of them.
Screenshots
Verdict
The clearest difference is rating: Phaser Factory at 5.0 against Sing's 3.0. Phaser Factory also leads on review sentiment (100% vs 63%) and iOS requirement (12.0 vs 15.6). Sing's advantage is update cadence (every 6 months vs every 39 months) and price ($4.99 vs $6.99). On ratings volume, ads, in-app purchases and monetization model 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
Sing costs $4.99 and Phaser Factory $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Phaser Factory holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 63% of Sing's written reviews are positive against 100% of Phaser Factory's.
Sing ships an update every 6 months, Phaser Factory every 39 months. The most recent releases landed on October 8, 2026 and September 24, 2026 respectively.
| Parameter | Sing | Phaser Factory |
|---|---|---|
| Price | $4.99 — better | $6.99 |
| Rating | 3.0 (2 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 62.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 6 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | HotPaw Productions | Genuine Soundware |
Customer experience
Sing
Phaser Factory
In-app purchases
Sing
No in-app purchases
Phaser Factory
No in-app purchases









