iChromatic vs Grammy One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iChromatic
This app provides precise instrument tuning using your device's microphone and a visual strobe display. It offers frequency readouts and responsive waterfall strobes for accurate pitch matching. Configure reference frequencies and tune a wide range of notes.
- Visual strobe display for tuning
- Frequency readout in Hz and cents
- Accurate waterfall strobe panes
- Concert A reference frequency adjustment
- Wide tuning range
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The HotPaw iChromatic Strobe Tuner uses the built-in microphone on your iPhone to allow you to tune a musical instrument rapidly and precisely via an animated visual display. For your iPad, please see the iChromatic Strobe Tuner HD. For guitar tuning, please see the HotPaw inTuna Strobe Guitar Tuner. Both of these apps are also here in the iOS app store. iChromatic includes both a frequency readout and 3 highly accurate and responsive waterfall strobe panes which allow extremely precise tuning. When the waveform patterns line up vertically as well as stop moving sideways in the strobe panes, this indicates that the input pitch (or a strong harmonic of the pitch) matches the frequency of the nearest equal temperament note. With the waterfall strobe tuning window, even very slight differences in frequency between the pitch detected and the target perfect pitch will cause the abstract waveform to waver or move sideways as it cascades down the strobe window. iChromatic also includes a pitch frequency readout in Hz and cents. Configuration options include a Concert A reference frequency adjustment in both Hz and Cents. Please try the Free inTuna A440 app, also in the iOS App store, before purchasing iChromatic, to see if you appreciate the advantages of using a strobe tuner. Tuning range using the built-in iPhone microphone is from 2 octaves above middle-C to 2 octaves below.
Grammy One
Access essential updates, deadlines, and voting tools for the Grammy Awards. Stay informed with news, personalized alerts, and live winner updates, all in one convenient place.
- Grammy news and announcements
- Personalized alerts and reminders
- Live winner updates
- Biometric Member Portal login
- Secure voting for members
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Stay connected with the Grammy One app — anytime, anywhere. The official Grammy One app gives Recording Academy members and Grammy fans quick access to essential updates, deadlines, and voting tools — all in one place. Features include: • Grammy news and announcements • Personalized alerts and reminders • Live winner updates on Grammy Sunday • Biometric Member Portal login • Secure voting for Grammy Voting members during every round Built to simplify your experience and keep you in the loop, wherever you are.
Screenshots
Verdict
The clearest difference is review sentiment: Grammy One at 100% against iChromatic's 50%. Grammy One also leads on price (Free vs $19.99) and rating (4.8 vs 3.0). iChromatic's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases 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
Grammy One is free to download; iChromatic costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Grammy One holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Grammy One has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of iChromatic's written reviews are positive against 100% of Grammy One's.
iChromatic ships an update every 15 months, Grammy One every 9 days. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.
| Parameter | iChromatic | Grammy One |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 3.0 (1 ratings) | 4.8 (24 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 24 — better |
| Update frequency | Every 15 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 156 MB |
| Age rating | 4+ | 4+ |
| Developer | HotPaw Productions | National Academy of Recording Arts & Sciences, Inc. |
Customer experience
iChromatic
Grammy One
In-app purchases
iChromatic
No in-app purchases
Grammy One
No in-app purchases









