Comparison

Turntabulator vs Audio Function Generator

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

Head to head
About

Turntabulator

Precisely measure your turntable's speed to ensure your vinyl sounds as the artist intended. This app uses advanced analysis to detect RPM accuracy, offering quick or exact measurement modes for audiophiles. Get detailed feedback on speed error and direction.

Highlights
  • Precise RPM measurement
  • Quick and Exact measurement modes
  • Displays percentage speed error
  • Indicates if turntable is fast or slow
  • Auto-sense 33⅓ or 45 RPM
  • No gyroscope required
Features
Currently charting
Read full description

If you’re a vinyl junkie, you want your music to sound exactly as the artist intended - and that means 33⅓ RPM, not 35. Previously, checking your turntable for accuracy was difficult and inexact. But no longer. Measuring your turntable’s speed is now as simple as setting your phone down. Just start Turntabulator, place it on your platter, and start spinning. In as little as a few seconds, Turntabulator will adapt its output to your turntable, revealing its analysis in a stabilized rotating display that has to be seen to be believed. No twisting your neck - just read and be delighted. Through the power of Musical Analysis with Gyroscopically Indifferent Calculations (MAGIC), no gyroscope is required, so Turntabulator works just fine on older devices. In fact, the results are more accurate than the gyroscope would provide. Turntabulator offers two measurement modes. Quick Mode will give you results within 0.1 RPM very quickly, typically in 15 seconds or less. Or, if you’re a perfectionist, use Exact Mode for more precise results, typically reaching 0.01 RPM error or less within one or two minutes. Turntabulator will auto-sense 33⅓ or 45 RPM, or can be fixed at either setting. It then displays the percentage error compared to the target RPM, and whether your turntable is running slow or fast. That’s it! Start using Turntabulator, and make sure your vinyl sounds as perfect as possible.

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

Screenshots

Turntabulator2 screens
Audio Function Generator4 screens

Verdict

The call

The clearest difference is price: Audio Function Generator at Free against Turntabulator's $1.99. Audio Function Generator also leads on rating (4.7 vs 4.2) and update cadence (every 6 weeks vs every 58 months). Turntabulator's advantage is in-app purchases (none vs 1) and chart position (#182 vs unranked). On review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Audio Function Generator holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 57, so its average is the more settled of the two. Written reviews point the same way: 75% of Turntabulator's written reviews are positive against 77% of Audio Function Generator's.

UpkeepUpdate frequency

Turntabulator ships an update every 58 months, Audio Function Generator every 6 weeks. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

Scorecard8 real differences · 3 level
Turntabulator versus Audio Function Generator: the parameters behind the verdict, then further details
ParameterTurntabulatorAudio Function Generator
Price$1.99Free — better
Rating4.2 (57 ratings)4.7 (2.2K ratings) — better
Positive reviews74.6% of reviews77.1% of reviews — better
Number of ratings572.2K — better
Update frequencyEvery 58 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#182 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.5
Further details — not scored
Size10 MB14 MB
Age rating4+4+
DeveloperMichael DoughertyThomas Gruber

Customer experience

Turntabulator

All ratings57 ratings
Positive77.2%
Neutral7.0%
Negative15.8%
Written reviews59 reviews
Positive74.6%
Neutral5.1%
Negative20.3%

Audio Function Generator

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

User reviews

Turntabulator

From 57 App Store ratings

What we love

  • 👍 Easy to use
  • ✅ Accurate readings
  • 💰 Good value for price
  • 💡 Ingenious functionality
  • ✨ Neat interface

Room to improve

  • ⚠️ Not for iPad users
  • ❌ Intermittent functionality
  • 📉 Accuracy concerns
  • 🚫 No refund policy
  • 💻 Outdated (32-bit)

Audio Function Generator

From 2.2K App Store ratings

What we love

  • 👍 Great app
  • 🎶 Helps with Tinnitus
  • 💯 Best app I've paid for
  • 🔍 Highly recommended
  • 🎨 Attention to detail

Room to improve

  • 🐛 Crashes
  • 💰 Deceptive/Money hungry
  • 🔒 Basic features paywalled
  • 🔒 Limited without paying
  • 🔒 Removed functionality to push paid version

Bugs and requests

Turntabulator

Reported bugs

9 issues
  • App doesn't detect speed
  • Consistently says 'Interrupted'
  • Phone spins on platter
  • Not accurate compared to tachometer
  • Gains to produce results sometimes
Show 4 more
  • 32-bit app will stop working with iOS 11
  • No response from developer for updates
  • Warning not to use with iPad after purchase
  • Keeps getting 'interrupted'

Requested features

7 requests
  • Support for 78 RPM
  • Support for 8 RPM
  • Support for 16⅔ RPM
  • Real-time readouts for adjustments
  • Live value display
Show 2 more
  • Custom RPM input field
  • Dark mode option

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)

In-app purchases

None

Turntabulator

No in-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99

Questions

Is Turntabulator free?
Turntabulator costs $1.99, with no in-app purchases.
Is Audio Function Generator free?
Audio Function Generator is free to download, with in-app purchases available.
Which has better reviews, Turntabulator or Audio Function Generator?
Audio Function Generator is rated higher. Turntabulator averages 4.2 out of 5 from 57 ratings, while Audio Function Generator averages 4.7 from 2.2K ratings.
Do Turntabulator or Audio Function Generator have ads?
Neither Turntabulator nor Audio Function Generator shows ads.
Which is updated more often, Turntabulator or Audio Function Generator?
Turntabulator ships an update every 58 months, and Audio Function Generator every 6 weeks. Most recently, Turntabulator was updated on September 28, 2026 and Audio Function Generator on October 5, 2026.

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