Comparison

Audio Function Generator vs DownLow ReBass

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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)
Features
Read full description

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

About

DownLow ReBass

This audio processing tool rebuilds and enhances the low-end frequencies in MP3s. It offers precise control over bass range and intensity, allowing users to create deeper, cleaner bass without complex software. Ideal for testing audio setups or making music hit harder.

Highlights
  • Rebuilds and enhances low-end frequencies
  • Precise control over bass range and intensity
  • Simple MP3 import and export
  • DSP-based bass replacement
  • No complex software needed
Features
Read full description

DownLow ReBass is a powerful audio processing tool designed for true bass enthusiasts. It doesn’t just boost bass — it rebuilds it. Using advanced DSP algorithms, DownLow ReBass lets you replace and enhance the low-end frequencies in your MP3s with precise control over the range and intensity. Known to the community as “rebassing,” this process brings out clean, deep bass without muddying your track. No need for complex tools like Audacity or FL Studio — just choose an MP3 from the Files app, set your low and high target frequencies, and adjust your boost level. DownLow ReBass handles the rest automatically. Whether you’re testing a new sub setup or just want your music to hit harder, DownLow ReBass helps you fine-tune your tracks for maximum low-end clarity. Features Dynamic low-end frequency control Clean DSP-based bass replacement Simple file import and export workflow Works directly with MP3 files DownLow ReBass is a one-time purchase — no ads, no subscriptions, and no hidden fees. Please submit feature requests from the About Page.

Screenshots

Audio Function Generator4 screens
DownLow ReBass3 screens

Verdict

The call

The clearest difference is price: Audio Function Generator at Free against DownLow ReBass's $1.99. Audio Function Generator also leads on review sentiment (77% vs 33%) and rating (4.7 vs 4.0). DownLow ReBass's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 6 weeks). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

Audio Function Generator is free to download; DownLow ReBass costs $1.99 up front. Audio Function Generator sells 1 one-off in-app purchase. DownLow ReBass asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 33% of DownLow ReBass's.

UpkeepUpdate frequency

Audio Function Generator ships an update every 6 weeks, DownLow ReBass weekly. The most recent releases landed on October 2, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
Audio Function Generator versus DownLow ReBass: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorDownLow ReBass
PriceFree — better$1.99
Rating4.7 (2.2K ratings) — better4.0 (6 ratings)
Positive reviews77.1% of reviews — better33.3% of reviews
Number of ratings2.2K — better6
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.5 — better16
Further details — not scored
Size14 MB1 MB
Age rating4+4+
DeveloperThomas GruberLane Messer

Customer experience

Audio Function Generator

All ratings2,191 ratings
Positive91.8%
Neutral3.1%
Negative5.1%
Written reviews271 reviews
Positive77.1%
Neutral6.3%
Negative16.6%

DownLow ReBass

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

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
Show 1 more
  • Improve accessibility (VoiceOver support)

DownLow ReBass

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99
None

DownLow ReBass

No in-app purchases

Questions

Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Is DownLow ReBass free?
DownLow ReBass costs $1.99, with no in-app purchases.
Which has better reviews, Audio Function Generator or DownLow ReBass?
Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while DownLow ReBass averages 4.0 from 6 ratings.
Do Audio Function Generator or DownLow ReBass have ads?
Neither Audio Function Generator nor DownLow ReBass shows ads.
Which is updated more often, Audio Function Generator or DownLow ReBass?
Audio Function Generator ships an update every 6 weeks, and DownLow ReBass weekly. Most recently, Audio Function Generator was updated on October 2, 2026 and DownLow ReBass on September 23, 2026.

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