Comparison

Turnit vs Frequency Counter Hz Tuner

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

Head to head
About

Turnit

This app offers a comprehensive scientific unit converter with over 2600 units across 70+ categories. Users can create custom converters and units, view calculation details, and access a history of conversions. It works offline and prioritizes user privacy.

Highlights
  • 2600+ units across 70+ categories
  • Create custom converters and units
  • View calculation details
  • Works completely offline
  • History section for review
  • Significant digit control
Features
Read full description

Turnit: Convert Everything, is a powerful, easy to use, customizable scientific unit converter. Massive library with over 2600 units across 70+ categories means with Turnit you can convert pretty much everything. Create your own converters to do the conversions you need quickly and easily. Create your own units. Learn about each unit and what it measures through detailed descriptions. Learn how conversions happen by seeing the calculations behind them. Turnit: Convert Units and Learn is fast and accurate with significant digit control. Features: -2600+ units across 70+ categories of measurement, each with description. -Create custom converters and units. -Fast, accurate, math engine with significant digits -See how each answer is obtained. -History section for review and reference. -Works completely offline. Does not collect data. -Search, sort, filter options Conversion Categories: -Acceleration -Acceleration - Angular -Angle -Area -Charge -Concentration - Molar -Concentration - Solution -Current -Data Bitrate -Data Storage -Density -Elastance -Electric Conductance -Electric Conductivity -Electric Field Strength -Electric Potential -Electric Resistance -Electric Resistivity -Electrostatic Capacitance -Energy -Energy Density -Fire Load Density -Flow -Flow - Mass -Flow - Molar -Force -Frequency Wavelength -Fuel Economy -Heat Flux -Heat Transfer -Illumination -Inductance -Length -Linear Charge Density -Linear Current Density -Luminance -Luminous Intensity -Magnetic Field Strength -Magnetic Flux -Magnetic Flux Density -Magnetomotive Force -Mass -Mass Flux Density -Moisture Vapor Transmission -Moment of Force -Moment of Inertia -Numbers -Permeability -Power -Pressure -Radiation -Radiation - Absorbed Dose -Radiation - Activity -Radiation - Exposure -Sound Level -Specific Energy -Specific Heat Capacity -Specific Volume -Speed -Surface Charge Density -Surface Current Density -Surface Tension -Temperature -Thermal Conductivity -Thermal Expansion -Thermal Resistance -Time -Torque -Velocity - Angular -Viscosity - Dynamic -Viscosity - Kinematic -Volume -Volume Charge Density

About

Frequency Counter Hz Tuner

This app offers guided instrument tuning for guitar and ukulele, a microphone-based frequency meter, and various tone generation tools. It also includes measurement history and an ultrasonic scanner for audio analysis.

Highlights
  • Guided instrument tuning
  • Microphone-based Hz meter
  • Measurement history
  • Tone and sweep tools
  • Ultrasonic scanner
  • Instrument tuner for guitar, bass, ukulele, violin
Features
Read full description

Frequency Counter Hz Tuner combines guided instrument tuning with a microphone-based Hz meter, measurement history, tone tools, and an ultrasonic scanner. Use the new guided flow to tune a guitar or ukulele one string at a time, or open the meter when you want to inspect the dominant frequency in a sound. GUIDED GUITAR AND UKULELE TUNING Choose guitar or ukulele and work through the strings in order. The guide listens to each string separately. When fresh readings stay within ±5 cents long enough to meet the stability check, the Confirm button becomes available. Tap it to save that string as verified. Each confirmed string records the observed Hz value, cents offset, and verification time. If you stop before finishing, the app saves the partial session and can offer to continue it after relaunch. INSTRUMENT TUNER The tuner includes standard string targets for guitar, bass, ukulele, and violin. Adjust the A4 reference when your tuning setup calls for a different reference. Guided string-by-string sessions are available for guitar and ukulele; the other instrument targets remain available in the regular tuner. DOMINANT FREQUENCY METER Use the microphone to view the dominant frequency of a sound in Hz. Select Auto, Music, Motor, or Hum mode to match the kind of reading you want to inspect. The meter and tuner provide distinct views, so you can move between a general Hz reading and instrument-focused pitch information without leaving the app. MEASUREMENT HISTORY Keep up to 500 measurement records for later reference. Add a note to identify a sound or session, and mark useful records as favorites. The history screen makes it easier to return to selected readings instead of relying on memory or separate notes. TONE AND SWEEP TOOLS Generate sine, square, triangle, or sawtooth waves from 20 Hz to 20 kHz. Use a steady tone when you need one frequency, or use sweep mode to move through a range. These controls are grouped in the Tone screen and can support listening, instrument, and audio experiments. ULTRASONIC SCANNER Scan the 17–24 kHz band, view the detected peak and a source hint, and review the recent detection log. Microphone response differs by device, especially at high frequencies, so the scanner does not promise that every phone can cover the entire band. A PRACTICAL MULTI-TOOL FOR SOUND • Tune guitar or ukulele with a guided string sequence • Continue a saved partial tuning session after relaunch • Use standard targets for guitar, bass, ukulele, and violin • Read dominant sound frequency in Hz through the microphone • Choose Auto, Music, Motor, or Hum meter modes • Keep measurement records with notes and favorites • Generate four waveform types in tone or sweep mode • Inspect peaks and recent events in the ultrasonic band Microphone permission is required for listening features. Readings and high-frequency coverage depend on the microphone, device hardware, the sound source, and the surrounding environment. The app is designed as an audio measurement, listening, and instrument-tuning aid.

Screenshots

Turnit4 screens
Frequency Counter Hz Tuner3 screens

Verdict

The call

The clearest difference is review sentiment: Turnit at 100% against Frequency Counter Hz Tuner's 0%. Turnit also leads on rating (5.0 vs 3.3) and ads (none vs shown). Frequency Counter Hz Tuner's advantage is in-app purchases (none vs 4) and update cadence (every 5 days vs every 3 months). On price 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

Both are free to download. Turnit sells 4 in-app purchases, starting at $0.49 per month. Frequency Counter Hz Tuner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Turnit holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 100% of Turnit's written reviews are positive against 0% of Frequency Counter Hz Tuner's.

UpkeepUpdate frequency

Turnit ships an update every 3 months, Frequency Counter Hz Tuner every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard8 real differences · 2 level
Turnit versus Frequency Counter Hz Tuner: the parameters behind the verdict, then further details
ParameterTurnitFrequency Counter Hz Tuner
PriceFreeFree
Rating5.0 (2 ratings) — better3.3 (6 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings26 — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPod — betteriPhone
Requires iOS12.2 — better17.0
Further details — not scored
Size44 MB98 MB
Age rating4+17+
DeveloperStanislav JidkovKyu-Hee Jang

Customer experience

Turnit

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Frequency Counter Hz Tuner

All ratings6 ratings
Positive50.0%
Neutral16.7%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

In-app purchases

4 purchases

Turnit

Subscriptions1
  • Monthly Donation$0.491 Month
One-time3
  • Small Donation$0.99
  • Medium Donation$1.99
  • Large Donation$2.99
None

Frequency Counter Hz Tuner

No in-app purchases

Questions

Is Turnit free?
Turnit is free to download, with in-app purchases available.
Is Frequency Counter Hz Tuner free?
Frequency Counter Hz Tuner is free to download, with no in-app purchases.
Which has better reviews, Turnit or Frequency Counter Hz Tuner?
Turnit is rated higher. Turnit averages 5.0 out of 5 from 2 ratings, while Frequency Counter Hz Tuner averages 3.3 from 6 ratings.
Do Turnit or Frequency Counter Hz Tuner have ads?
Frequency Counter Hz Tuner shows ads; Turnit does not.
Which is updated more often, Turnit or Frequency Counter Hz Tuner?
Turnit ships an update every 3 months, and Frequency Counter Hz Tuner every 5 days. Most recently, Turnit was updated on November 3, 2026 and Frequency Counter Hz Tuner on November 5, 2026.

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