Tone generator vs QR Studio(Pro)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tone generator
Create various periodic signals with adjustable frequency and amplitude for testing electronic circuits or tuning instruments. Features include a metronome, a real-time tuner, and options for generating different noise types and tone sequences. It also offers unique features for hearing tests and party games.
- Generate periodic signals
- Adjustable frequency and amplitude
- Integrated instrument tuner
- Metronome for practice
- Hearing ability tests
- Generate white/pink noise
- Create tone sequences
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Generate various periodic signals with different waveforms with adjustable frequency and amplitude. These are used to test electronic circuits such as amplifiers and filters. Also suitable for musicians to tune their instruments. As soon as a note sounds, the integrated tuner recognizes the pitch and displays the note name and deviation. For any instrument that produces an even tone. A metronome also helps you to practise. Drive insects away or compare your hearing ability with your friends and relatives and share your results! Or watch others straining their ears to find the sounds that cannot locate you. Party fun is guaranteed! optional features (Purchase): - free of Ads - manual frequency input - support app functionality for connected Bluetooth devices, e.g. speaker - different signals - white/pink noise - tuner for tuning instruments (real-time tone recognition C1-C8) with tuning whistle - metronome for a steady tempo - note/tone for frequency - Left/right channel, stereo - create a tone sequence for playing several different frequencies in particular time slot - loop for tone sequence - save and delete tone sequences - load saved tone sequences - send your tone sequence as an audio file (.caf format) - option to compress audio files Attention: If you want to share your results with others, first test your audible frequencies, then mark under the speakers your lowest audible tone and your highest audible tone (stored only temporarily). A small hint: the chart will show you what other frequencies of your age are still possible to reach.
QR Studio(Pro)
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QR Studio is a powerful and easy-to-use app for creating, scanning, and managing custom QR codes. Whether you’re designing for business, branding, or personal use, QR Studio gives you full control over how your QR codes look and function. The app is divided into three main tabs: Create Tab: The Create tab offers a wide range of customization options for generating QR codes. Users can adjust visual elements such as eye shape and color, data shape and color, and choose the desired error correction level. Additional settings include control over QR structure (gapless or standard), position, size, and rotation. The app also supports background customization, including color and border properties like radius, color, style, and width. Text can be added with flexible styling options—covering decoration, color, font style, weight, alignment, position, and rotation. Images can also be incorporated into the QR code, with control over their position, alignment, scale, and rotation, enabling the creation of designs tailored to individual branding or personal preferences. Scan Tab: Quickly scan any QR code using your camera or by selecting an image from your gallery. The scanner is fast, reliable, and compatible with all standard QR formats. History Tab: Access a complete history of all the QR codes you’ve created or scanned. This makes it easy to revisit, reuse, or share previous designs and scans. QR Studio is built for designers, developers, marketers, and everyday users who want complete freedom in how they create and manage QR codes. Developed by Anvaysoft Programmers – Nishita Panchal, Hrishi Suthar Made with love in India
Screenshots
Verdict
The clearest difference is price: Tone generator at Free against QR Studio(Pro)'s $2.99. QR Studio(Pro)'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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
Tone generator is free to download; QR Studio(Pro) costs $2.99 up front. Tone generator sells 3 one-off in-app purchases. QR Studio(Pro) asks for nothing beyond the download.
| Parameter | Tone generator | QR Studio(Pro) |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.0 (155 ratings) — better | — |
| Positive reviews | 66.8% of reviews | — |
| Number of ratings | 155 — better | — |
| Update frequency | Every 5 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 27 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | michael heinz | Hrishi Suthar |
Bugs and requests
Tone generator
Reported bugs
10 issues- Doesn't go lower than 10hz
- Crashes before I can export even though I paid for the feature
- Fake app. Buying the upgrade doesn't do anything. There is no support. You can't export like it says you can. It's a scam.
- app is modified
- No tone
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- Frozen on my iPad
- Doesn't produce any sound
- No sound
- Faulty
- No sound
Requested features
7 requests- Wish I had a manual that explains a couple functions
- More precise way to select the frequency
- Playing of multiple tomes
- Manually enter a frequency
- More than one voice
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- Dark mode option
- Advanced analytics dashboard
QR Studio(Pro)
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tone generator
- Extra-Feature 1$1.99
- No advertising$1.99
- Upgrade to full version$3.99
QR Studio(Pro)
No in-app purchases
Questions
Is Tone generator free?
Is QR Studio(Pro) free?
Do Tone generator or QR Studio(Pro) have ads?
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