Cruz GR vs Check1.2
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Cruz GR
Read full descriptionHide full description
Cruz GR turns your iPhone and iPad into a powerful MIDI controller. Create custom pad layouts in seconds. Build rich chords in any key and adapt every grid to your workflow. Three modes: Notes: Play melodies, basslines, leads, and trigger samples. Chords: Generate musical voicings from simple triads to rich 11ths, voiced Compact, Open or Wide, across any scale and key. Control: Map pads to MIDI CC. Pair instantly with Cruz GR Connect, the Mac companion app. Stable, persistent connectivity over Wi-Fi or USB with support for multiple devices. Cruz GR Connect is included with your purchase and available on the Mac App Store. Designed for music production on Mac. Works with Logic Pro, Ableton Live, FL Studio, and other major DAWs on Mac. Cruz GR is a MIDI controller and does not generate sound on its own. For live performance and studio recording, a USB connection is recommended.
Check1.2
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is price: Check1.2 at Free against Cruz GR's $4.90. Check1.2 also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (17.0 vs 26.4). Cruz GR's advantage is in-app purchases (none vs 2). On ads 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
Check1.2 is free to download; Cruz GR costs $4.90 up front. Check1.2 sells 2 one-off in-app purchases. Cruz GR asks for nothing beyond the download.
Cruz GR ships an update every 2 weeks, Check1.2 every 2 days. Both last shipped on October 24, 2026.
| Parameter | Cruz GR | Check1.2 |
|---|---|---|
| Price | $4.90 | Free โ better |
| Update frequency | Every 2 weeks | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, Mac โ better | iPhone, iPad |
| Requires iOS | 26.4 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 7 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | CRUZ Conseil | Daisuke Kawaue |
In-app purchases
Cruz GR
No in-app purchases
Check1.2
- Try the full version for 7 daysFree
- Full version$6.99









