Comparison

Check1.2 vs EQ Ear

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

Head to head
About

Check1.2

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Check1.2 finds the frequencies most likely to feed back, in Hz. Before the show, you cannot tell which frequency to pull down. At the FOH desk, the analyzer's red line shows the bands most likely to feed back. The iPhone microphone is all you need. No measuring instrument, no external microphone. The Full version is a one-time purchase. It is not a subscription. FREE AND FULL - Stereo recording: free is 5 minutes a take, 2 saved. Full records a whole show in one take and keeps all. - Monitor check results: free keeps 3. Full keeps as many as you like, compares with your last visit to the same venue, and keeps what you changed. - Normalize: free works on takes up to 5 minutes. Full works on longer takes too. - Frequency quiz: free is Beginner, 6 bands, 2 sets a day. Full adds Advanced, 21 bands, unlimited sets. - Accuracy by band: free today, Full all time. - A/B comparison: free is Pop. Full has four genres. - Instrument views: free All. Full adds drums, bass, guitar, vocal, piano. - Spectrogram: free 3 times a day. Full unlimited. - Speaker check "Measure with the mic", export of results, Pan position quiz, Band Timing Check: Full. Use Restore Purchases on a new device. Analyzer, Monitor check, voice registration, Metronome, Tuner and Speaker check are free. Spectrogram 3 times a day. No account needed. Try Full free for 7 days; it returns to free with no charge. Works on iPad too. For people learning PA, people doing the PA on the day at a small venue with no dedicated engineer, and people training new PA staff at a live house. FEATURES - Stereo recording, no compressor and no limiter. - Metronome with a volume slider and a beat-1 accent you can turn on or off. - Tuner. Press a note name to hear it as a sine tone. - Speaker check. MONITOR CHECK (BEFORE THE SHOW) From 15 seconds of ambient sound and your voice, it lists the bands most likely to feed back, as a number and a word, like "about 250 Hz (muddy)". While recording, a green, yellow or red lamp warns you when feedback is close. Register your voice and it also reports muddy (200-500 Hz), boomy low end (63-125 Hz), harsh (2-5 kHz) and sibilance (5-8 kHz). A tone that stays after your voice stops is close to feedback. It listens 3 seconds to tell it from reverberation. Results stay on your iPhone with the venue name and a note, so you can compare next time. What you do next is the real work. Turn the level down. Move the speakers or the microphone. If it still feeds back, cut the band you found with EQ, a little at a time. ANALYZER (DURING THE SHOW) 50 Hz to 18,000 Hz, about 11.7 Hz steps, redrawn about 23 times a second. - Green line: the sound now. White: Peak Hold. Orange dashed: the strong band. - A tone that stands out from its neighbours and keeps doing so gets a solid red line. Musical notes are told apart by their harmonics and get no red line. - Drag the screen to read the frequency there. Pick an instrument (All, Drums, Bass, Guitar, Vocals, Piano) for notes written for it. - If the waveform goes flat on top, it tells you it is clipping. FREQUENCY QUIZ Name the frequency of a sine tone, or compare a band track with and without EQ and name the band that changed. With headphones and Advanced (full version), 63 Hz and 125 Hz join in. HOW TO USE Monitor Check measures the ambient sound for 15 seconds. Record your voice, press "See results" and wait 3 seconds. Read the bands most likely to feed back and what to do next. PRIVACY Recording, analysis, voice registration, results and venue notes stay on your iPhone. The app only connects for Apple's in-app purchase. If you email us, we get your address and message. No ads, no tracking. NOTES This app is not a measuring instrument. Start quiet and raise the level slowly. Stereo recording works on supported models only; others record in mono, and the app tells you first. Below 150 Hz the iPhone microphone cannot measure accurately, so feedback detection is off there. dB is not calibrated.

About

EQ Ear

Features
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Most producers learn to see a mix before they can hear one. EQ Ear works the other way round. Every question is audio first. You hear a loop, you make a call, and you find out exactly how close you were โ€” in hertz and decibels. FIVE WAYS TO LISTEN EQ โ€” Move four faders until your curve locks onto the track. Bass, low-mid, high-mid, treble. Compare โ€” Two mixes, one band moved. The sliders are locked, so you diagnose by ear alone: which band, and was it boosted or cut? Pinpoint โ€” Forget four broad bands. Name the exact frequency, from 125 Hz to 8 kHz, on a logarithmic scale that shows you where each one really sits. Tempo โ€” Drum loops from 60 to 200 BPM. Tap along, read your pulse, lock your internal clock before you open the DAW. Recall โ€” Hear a take. Five seconds of silence. Hear it again. Did the tone change, or is your memory filling in the gaps? A PATH, NOT A QUIZ 900+ questions across nine categories of music. Every lesson mixes three of the five modes, so you never settle into one kind of listening. Start with First Training โ€” four bands, no genre, nothing to memorise. Then move into vocals, guitar, piano, pop, electronic, rock, classical, jazz and hip-hop. Each one carries its own frequency problems: sibilance in a vocal, mud in a guitar, sub weight in an 808. SEE EXACTLY WHAT YOU MISSED Getting it wrong is the lesson. After every round you see your curve drawn against the track, band by band, with the hertz and decibels you were off by. Then you can play the loop again with the correct EQ applied and hear the difference you could not hear a minute ago. Retrying a lesson is always free. Take a level as many times as you need. SURVIVAL MODE When you want to stop studying and start competing: all five modes, every category, endless. Speed feeds your score, one miss ends the run, and your best resets every week. BUILT FOR EARS THAT WORK Four bands mapped to real ranges โ€” 20-250 Hz, 250-500 Hz, 500 Hz-4 kHz, 4-20 kHz โ€” colour-coded everywhere in the app so the map stays in your head. Clean filters, seamless A/B switching with no click, and loops that keep running while you decide. Practice mode lets you pull any single mode out of the lessons you have finished and drill it on its own. Weak on tempo? Run tempo only. Streaks, XP and ranks track the long game, from Tin Ear upward. WHO IT IS FOR Producers and mixing engineers who want faster decisions. Musicians who want to hear what an engineer hears. Anyone who has stared at an EQ curve wondering whether they are fixing the sound or just moving it. No theory. No notation. No prior training. PASSES AND PLUS Passes open new lessons. You start with ten and get more every day, so you can work through the app for free at a steady pace. EQ Ear Plus removes the limit: every category, every lesson, unlimited Survival runs, no waiting. The full tutorial is free and always will be. Headphones or monitors strongly recommended. Phone speakers cannot reproduce the low end, and the low end is half the training. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://eqear.candevecioglu.com/support.html Terms of Use: https://eqear.candevecioglu.com/terms.html Privacy Policy: https://eqear.candevecioglu.com/privacy.html

Screenshots

Check1.24 screens
EQ Ear4 screens

Verdict

The call

The clearest difference is update cadence: Check1.2 at every 2 days against EQ Ear's every 8 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Check1.2 sells 2 one-off in-app purchases and EQ Ear sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Check1.2 ships an update every 2 days, EQ Ear every 8 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard1 real difference ยท 5 level
Check1.2 versus EQ Ear: the parameters behind the verdict, then further details
ParameterCheck1.2EQ Ear
PriceFreeFree
Update frequencyEvery 2 days โ€” betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details โ€” not scored
Size19 MB142 MB
Age rating4+9+
DeveloperDaisuke KawaueCan Devecioglu

In-app purchases

2 purchases

Check1.2

One-time2
  • Try the full version for 7 daysFree
  • Full version$6.99
2 purchases

EQ Ear

Subscriptions2
  • Monthly Plus$7.991 Month
  • Yearly Plus$34.991 Year

Questions

Is Check1.2 free?
Check1.2 is free to download, with in-app purchases available.
Is EQ Ear free?
EQ Ear is free to download, with in-app purchases available.
Do Check1.2 or EQ Ear have ads?
Neither Check1.2 nor EQ Ear shows ads.
Which is updated more often, Check1.2 or EQ Ear?
Check1.2 ships an update every 2 days, and EQ Ear every 8 days. Most recently, Check1.2 was updated on October 24, 2026 and EQ Ear on October 16, 2026.

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