Audio Function Generator vs Sound Record Event
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio Function Generator
Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.
- Generate sine, square, triangle, and sawtooth tones
- Frequency and volume sweep generation
- Noise generation (white, pink, violet, etc.)
- Custom preset creation and saving
- Extended frequency range (PRO feature)
- Multi-tone playback (PRO feature)
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This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity. Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years. So, … what can you do with this App? • PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth. • PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency). • PLAY VOLUME SWEEPS (from minimum to maximum volume). • Try the SWEEP REPEAT / WOBBLE function. • Try the MUSIC TONES PLAYBACK. • Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION! • Or create your own CUSTOM PRESETS! • And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function. • Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported. The Function Generator is AMAZINGLY INTUITIVE and SIMPLE to use! AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required): => Extending The Frequency Range (1Hz - 21kHz) => Extending The Sweep Times (0.1s - 600s) => Changing Min/Max Slider Frequency Ranges => Changing Max Sweep Time Slider Range => Changing Signal Amplitude => Enabling Of The Sweep Repeat / Wobble Function => Frequency Slider Setting to Linear or Logarithmic => Left/Right Channel Individual Selection => Permanently Saving Custom Presets => Saving Of Endless Number Of Audio Configurations => Phase Out Setting (custom phase shift of the generated signal) => BPM (Beats per Minute) Feature => Dual Function Generator => MultiTone Generator (playback of up to eight individual tones) => Background Theme Selection (Light/Dark) Check out the tutorial page: www.ee-toolkit.com/audio-function-generator
Sound Record Event
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Start recording the sound at the time we indict after we tap the start button. After we tap the start button, the job list view will be displayed automatically. In this edition, when we tap the start button, after the job view is displayed, we need to keep the job list view in the foreground status in order to start recording the sound successfully. After the recording job has already been started successfully, then we could press the home key and the app will continue to record the sound in the background status, at this time, in the current iOS, a small red bar will be displayed at the top of the screen, in the current iPad OS, a small record icon which includes a white microphone will be displayed at the top right corner. However, if we need the next record job could start automatically, we still need to keep the job list view displayed in the foreground status. This app includes six kinds of sound recorder. The one time event sound recorder could record the sound at the specific time. The interval event sound recorder could start to record the sound every interval minutes. The every hour event sound record could record the sound at the indicted minutes every hour. The every day event sound record could record the sound at the indicted hour and minute every day. The every week event sound recorder could record the sound at the indicted week day and at the indicted hour and minutes. When we need to run all the sound recorders, just tap the start button from the main view. If we need to run one of the sound recorder, for example, the every hour event sound recorder only , then tap the every hour event button, then tap the start button at the bottom tools bar, so start the every hour event sound recorder only. Export the sound files: use iTune File Sharing. or use Email or iCloud. In the file list, select the sound file , tap the Email button , or tap to iCloud button. Using the email, need to set the default email box of the device. Basic Usage: When we first launch this app, its database is empty.So we need to add our own event first. Step 1: decide which kinds of sound recorder we need to add. For example, if we want to add a every hour event sound recorder, so we tap the Every Hour Event button, then we will view the Every Hour Event Sound Recorder list, at first , the list is empty. Step 2: tap the add button at the bottom of the view, after that, we will see the every hour event view. In this view, we could pick which minute the sound recorder will start. Then select the duration of the recording. After that, Tap the save button at the upper left corner. At last, we will see one row in the every hour event list. And tap the start button, we will see the job list of recording sound in the next 24 hours. Advanced Usage: In the main view, beside the event button, is the status button of the event. For example, if the button on the right side of Every hour event button is ON, then every hour sound recorder event is alive. When we tap the start button, the alive event will run. If the status button is OFF, then every hour sound recorder is sleep. When we tap the start button in the main view, the every hour sound recorder event will run.
Screenshots
Verdict
The clearest difference is price: Audio Function Generator at Free against Sound Record Event's $0.99. Audio Function Generator also leads on update cadence (every 6 weeks vs every 9 months). Sound Record Event's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 16.0). On ads 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
Audio Function Generator is free to download; Sound Record Event costs $0.99 up front. Audio Function Generator sells 1 one-off in-app purchase. Sound Record Event asks for nothing beyond the download.
Audio Function Generator ships an update every 6 weeks, Sound Record Event every 9 months. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.
| Parameter | Audio Function Generator | Sound Record Event |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.7 (2.2K ratings) — better | — |
| Positive reviews | 77.2% of reviews | — |
| Number of ratings | 2.2K — better | — |
| Update frequency | Every 6 weeks — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | 方 沈 |
Bugs and requests
Audio Function Generator
Reported bugs
4 issues- Crashes on launch
- Volume slider issues
- Airplay not working
- Sound distortion when display is active
Requested features
6 requests- Add download/save feature for custom sounds
- Improve sweep function (continuous mode, better frequency control)
- Add more multi-frequency rows
- Implement 432Hz base frequency option
- Add phase control for noise generators
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- Improve accessibility (VoiceOver support)
Sound Record Event
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Audio Function Generator
- Upgrade to PRO$14.99
Sound Record Event
No in-app purchases
Questions
Is Audio Function Generator free?
Is Sound Record Event free?
Do Audio Function Generator or Sound Record Event have ads?
Which is updated more often, Audio Function Generator or Sound Record Event?
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