Tone generator vs Kala speaker
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.
Kala speaker
Convert entered text into speech and play it repeatedly. This multilingual speaker app is useful for broadcasting messages like store greetings or safety reminders. It supports multiple languages for versatile communication needs.
- Text to voice conversion
- Repeated message broadcasting
- Multilingual support
- Customizable messages
- Simple interface
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Sometimes you need a speaker to play messages repeatedly: such as "Please show your ID", "Promotion is discounted", "Welcome to our store", "Please pay attention to safety!", "Please show your ID", so you need a multilingual speaker! The input text can be converted into voice and broadcast repeatedly. Support multiple languages
Screenshots
Verdict
The clearest difference is rating: Kala speaker at 5.0 against Tone generator's 4.0. Kala speaker also leads on ads (none vs shown) and update cadence (monthly vs every 5 months). Tone generator's advantage is ratings volume (152 vs 1). On price, in-app purchases, 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
Both are free to download. Tone generator sells 3 one-off in-app purchases and Kala speaker sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Kala speaker holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Tone generator has 152 ratings behind it against 1, so its average is the more settled of the two.
Tone generator ships an update every 5 months, Kala speaker monthly. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.
| Parameter | Tone generator | Kala speaker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (152 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 67.1% of reviews | — |
| Number of ratings | 152 — better | 1 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 27 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | michael heinz | 盛蜀 李 |
Customer experience
Tone generator
Kala speaker
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
Kala speaker
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
Kala speaker
- Full Version$4.99
- full Version$6.99
Questions
Is Tone generator free?
Is Kala speaker free?
Which has better reviews, Tone generator or Kala speaker?
Do Tone generator or Kala speaker have ads?
Which is updated more often, Tone generator or Kala speaker?
Other comparisons
