Best Scale Finder App

0+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated June 2026

Every iPhone needs a few good scale finder app. We benchmark 0+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Scale Finder App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Auto-Key | Music key detectionAuto-Key | Music key detectionFree3.9★ (87)NoNoJul 2026
2Scale Finder: Guitar TheoryScale Finder: Guitar TheoryFreeNoYesMay 2026
3Guitar Scale Finder ToolGuitar Scale Finder Tool$7.994.2★ (19)NoNoMay 2026
4Piano Chords and ScalesPiano Chords and ScalesFree4.8★ (9.1K)NoYesJul 2026
5Key Finder - Musical ScalesKey Finder - Musical Scales$0.993.3★ (9)NoNoJul 2026
6CAT Scale LocatorCAT Scale LocatorFree4.0★ (7)NoNoJul 2026
7Scale For Grams: Digital ScaleScale For Grams: Digital ScaleFree4.5★ (3.3K)NoYesJul 2026
8Chord and Scale Finder IIChord and Scale Finder IIFree5.0★ (1)NoNoJun 2026

Top Picks for Scale Finder App

Auto-Key | Music key detection#1

Auto-Key | Music key detection by Antares Audio Technologies, LLC

Music key and scale detection
Editor's Choice
🎵 Music
3.9😐(87 ratings)
Free
Auto-Key | Music key detection screenshot 1
Auto-Key | Music key detection screenshot 2
Auto-Key | Music key detection screenshot 3
Auto-Key | Music key detection screenshot 4
Auto-Key | Music key detection screenshot 5
Auto-Key | Music key detection screenshot 6

Instantly identify the musical key and scale of any audio source, from studio tracks to live instruments and vocals. Seamlessly sync detected keys with your computer's Digital Audio Workstation (DAW) for enhanced music production.

What We Love

  • 👍 Accurate key detection (most of the time)
  • 👍 Useful for learning songs
  • 👍 Handy keyboard display for novice players
  • 👍 Free to use (initially)

Room to Improve

  • 🐛 Inconsistent key detection
  • 🐛 Often gives wrong keys
  • 🐛 Slow performance
Guitar Scale Finder Tool#3

Guitar Scale Finder Tool by School of McRock Ltd

Learn guitar scales fast!
Worth Considering
📚 Education
4.2(19 ratings)
$7.99
Guitar Scale Finder Tool screenshot 1
Guitar Scale Finder Tool screenshot 2
Guitar Scale Finder Tool screenshot 3
Guitar Scale Finder Tool screenshot 4
Guitar Scale Finder Tool screenshot 5
Guitar Scale Finder Tool screenshot 6

This tool helps guitarists learn and visualize a vast array of scales and arpeggios. It offers interactive charts, tablature, and practice modes to master note names, intervals, and fingerings across the fretboard.

More Scale Finder App apps to explore

4
Piano Chords and Scales
Piano Chords and Scales
Piano Chords and Scales
Learn, play and compose songs
Free

Explore chords, scales, and progressions to compose music. Visualize musical structures on a virtual piano and staff, with interactive tools and audio playback. Ideal for musicians of all levels seeking inspiration and understanding.

Chord and scale collectionsSong composer with recommendationsVirtual piano and staff views
🎵 Music
(9.1K)
free with in-app purchases
5
Key Finder - Musical Scales
Key Finder - Musical Scales
Key Finder - Musical Scales
Explore by notes or chords!
$0.99

Identify musical scales based on selected notes or chords. Explore over 1000 scales, from common to exotic, to aid in music production, auto-tune, and creative inspiration.

Identify scales from notes/chordsOver 1056 scales availableFind Auto-Tune/Pitch-Correction keys
🎵 Music
(9)
paid
6
CAT Scale Locator
CAT Scale Locator
CAT Scale Locator
Find The Nearest CAT Scales!
Free

Easily find the closest CAT Scale locations using your current GPS or by custom search. Save your favorite locations for quick access. This app helps truckers and drivers locate essential weighing stations on the go.

Locate nearest CAT ScalesGPS-based searchCustom location search
🗺️ Navigation
(7)
free
7
Scale For Grams: Digital Scale
Scale For Grams: Digital Scale
Scale For Grams: Digital Scale
Scale For Weighing Gram Weight
Free

Estimate the weight of objects using only your phone's camera. This AI-powered app transforms your device into a smart scale, providing instant weight and size estimates for various items from food to furniture. It also offers additional tools like text translation and calorie detection.

AI weight estimation from photosMeasure length from photosInstant text translation via camera
🔧 Utilities
(3.3K)
free with in-app purchases
8
Chord and Scale Finder II
Chord and Scale Finder II
Chord and Scale Finder II
Increase your musical literacy
Free

This interactive tool helps musicians understand music theory and visualize fretboards for various stringed instruments. It supports custom tunings and scales, allowing for deep exploration of harmony and fretboard relationships. Ideal for all skill levels, from beginners to advanced players.

Supports numerous stringed instruments and tuningsCreate and save custom tunings and scalesVisualize chords, scales, and intervals on fretboard
📚 Education
(1)
free
9
arboleaf
arboleaf
arboleaf
For Arboleaf Smart Scale
Free

Track your body composition and weight loss progress with this smart scale companion app. It syncs data from compatible scales to provide detailed insights and helps you set and achieve fitness goals. Integrates with popular health platforms for a holistic view of your well-being.

Body weight trackingBody fat percentageBMI calculation
💪 Health & Fitness
(17)
free with in-app purchases
10
줄자어플 - 길이측정 · 거리측정
줄자어플 - 길이측정 · 거리측정
줄자어플 - 길이측정 · 거리측정
증강현실눈금자 - 측정기 · 수평계
Free

This app functions as a digital measuring tool, allowing you to measure objects and distances with accuracy. It also enables you to create sketches with text annotations and share your measurements and designs.

Digital ruler and measuring tapeImperial and Metric unitsRangefinder for distance measurement
🔧 Utilities
(4.2K)
free with in-app purchases
11
iScale: Kitchen Scale
iScale: Kitchen Scale
iScale: Kitchen Scale
Kitchen Scale
Free

This app transforms your device into a digital kitchen scale. Weigh ingredients and manage your cooking with precision. It's a handy tool for any culinary enthusiast.

Digital kitchen scale functionalityIngredient weighingCooking precision tool
🔍 Reference
(4.8K)
ad-supported
12
Scale for Grams & Weights・Kilo
Scale for Grams & Weights・Kilo
Scale for Grams & Weights・Kilo
Digital Scale for Grams
Free

Transform your phone into a digital scale using AI. Simply take a photo of an object to instantly get its weight in various units. Ideal for precise measurements of small items, food portions, or packages without needing a physical scale.

Instant weight estimates from photosScale for grams precisionDigital scale accuracy with ML
🔧 Utilities
(606)
subscription
13
Measuring Tape, Photo Ruler
Measuring Tape, Photo Ruler
Measuring Tape, Photo Ruler
Meter: measure length, height
Free

This app offers precise measurements using augmented reality and on-screen tools. It caters to both professional and everyday needs with features like a flexible measuring tape, bubble level, and photo ruler. Save and manage your measurements within projects for easy access.

Augmented reality measurementsOn-screen ruler (1D/2D)Photo ruler for object measurement
📊 Productivity
(2.6K)
freemium
14
Scale for grams - weight scale
Scale for grams - weight scale
Scale for grams - weight scale
Digital scale to weight grams
Free

Transform your phone into a digital scale using AI. Simply take a photo of an object, and the app will instantly estimate its weight in grams. It's a convenient, portable tool for quick measurements on the go.

AI-powered weight estimationInstant measurement from photosSmart history log
🔧 Utilities
(119)
free with in-app purchases
15
Digital scale: grams & weights
Digital scale: grams & weights
Digital scale: grams & weights
Scale For Weighing Gram Weight
Free

Transform your iPhone into a digital scale using AI. Estimate the weight of objects by taking a photo or uploading an image, with results available in grams, pounds, or kilograms. Track your measurements and use the AI-powered algorithm for accurate estimations.

Estimate weight from photosSupports grams, pounds, and kilogramsAI-powered weight estimation
🔧 Utilities
(66)
free with in-app purchases
16
Weigh My Truck
Weigh My Truck
Weigh My Truck
by CAT Scale Company
Free

Professional drivers can now weigh their trucks and pay for the service directly from their mobile device while on the scale. Store truck and trailer details, track weigh history, and receive PDF copies of weigh tickets. The app automatically locates the nearest scale and offers features for compliance and easy access to support.

Weigh truck and pay from phoneStore truck and trailer informationTrack weigh history
💼 Business
(157)
free
17
Scale-Tec POINT
Scale-Tec POINT
Scale-Tec POINT
by Scale-Tec Ltd.
Free

This app acts as a remote display and support tool for compatible weighing devices. View live weight readings, zero or tare scales, and adjust display settings. It also facilitates direct connection with the support team for remote diagnosis and troubleshooting.

Remote scale display via BluetoothLive weight readings up to 1000 ftRemote zero and tare functions
🔧 Utilities
(14)
free
18
OKOK·International
OKOK·International
OKOK·International
by Shenzhen Careyou Health Science and Technology Co., LTD
Free

Track and manage your weight and body composition with a smart Bluetooth scale. Monitor key health indicators, view weight trends, and sync data with Apple Health. Supports multiple family members.

Bluetooth smart scale integrationTrack weight, body fat, body water, muscleWeight records and trend analysis
💪 Health & Fitness
(14K)
free with in-app purchases
19
Scale for Grams & Weighing RA
Scale for Grams & Weighing RA
Scale for Grams & Weighing RA
Fun Photo Weight Guessing Game
Free

Estimate object weights using just a photo with this fun guessing game. It utilizes local algorithms for privacy and offers challenges and statistics. Remember, results are approximate and for entertainment only.

Photo weight estimationWeight-guessing challengesAchievement unlocks
🔧 Utilities
(352)
ad-supported
20
E-Weigh: Scale for Grams
E-Weigh: Scale for Grams
E-Weigh: Scale for Grams
Digital Phone Weight / Measure
Free

Transform your smartphone into a versatile measurement tool. Accurately estimate the weight and dimensions of objects using your camera with advanced AR and computer vision. Ideal for chefs, DIYers, shippers, and anyone needing quick, precise measurements.

Estimate object weight via photoCalculate length, width, height with AROn-screen digital ruler for precise length
🔧 Utilities
(71)
free with in-app purchases

FAQ about Scale Finder App

What is the best scale finder app for iPhone?
Auto-Key | Music key detection tops our scale finder app ranking as of June 2026, with a 3.9-star average from 87 App Store ratings, and it's free to download.
Yes — 18 of the top scale finder app we rank are free to download, including Auto-Key | Music key detection and Scale Finder: Guitar Theory.
Auto-Key | Music key detection has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
Auto-Key is a mobile application designed to detect the musical key and scale of any audio source. It can analyze audio from speakers, acoustic instruments, or vocals, providing instant results.
The app captures a few seconds of audio and analyzes it to determine the most likely musical key. It also identifies the diatonic key, offering comprehensive key information.