Isotope MIDI Keyboard vs SampleFit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Isotope MIDI Keyboard
This app offers an intuitive and accessible way to play music and learn music theory. Its unique isomorphic grid layout simplifies chord playing and understanding note relationships, making it ideal for both beginners and experienced musicians.
- Isomorphic grid layout for intuitive playing
- Built-in Element sound engine
- Audio Unit v3 plugin support
- MIDI and MIDI over Bluetooth connectivity
- Velocity-based touch and accelerometer input
- Customizable themes and layouts
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Isotope is an isomorphic MIDI keyboard app for iOS. Isotope makes playing music fun and intuitive, while also making music theory more accessible. Unlike traditional keyboard, Isotope's isomorphic grid layout is based on mathematical and geometrical properties of sound itself. When you play it, it's much more intuitive. When you want to learn about music, it shows how notes relate to one another. # Isomorphic Keyboard - If the interval stays the same, the form of your hand stays the same. For instance, when you put your first finger on the C, third finger on the E and the second finger on the G, it's the C major chord. Now that your fingers are in a triangle, if you just go up by one row, now it becomes the F major chord. - Square-based isomorphic keyboards like Isotope resembles stringed instruments tuned in perfect 4th apart from one string to the next. Therefore, if you have an experience in playing stringed instruments like the guitar, the bass, the violin, or the cello, you will get learn to play Isotope quickly. # Element - Built-in Sound Engine for Isotope - Available as an Audio Unit v3 plugin - Element has a versatile sound characteristics resembles double bass and bass guitars in the lower range, electric piano in the mid range and woodwind in the higher frequency range. # Connectivity - Supports MIDI (Garageband, Drambo, FL Studio Mobile etcs.) - MIDI over Bluetooth (For connecting Isotope to your computers / or any other devices that support MIDI over Bluetooth) # Usability - Multi-window and Slide Over support on iPadOS - Velocity based on touch area and accelerometer - 3rd party Audio Unit instrument plugins # Customizability - Row Interval adjustment - Fully customizable themes - Resizable buttons / app windows
SampleFit
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SampleFit prepares entire PCM sample packs for hardware samplers and professional audio workflows. Select WAV or AIFF files, choose the exact output contract, and receive verified local copies with predictable filenames. Your originals are never modified. EXACT PCM OUTPUT • 44.1 kHz or 48 kHz sample rate • 16-bit or 24-bit depth • Mono or stereo channels • WAV or AIFF container BATCH-FIRST WORKFLOW Convert up to 100 samples in one batch instead of repeating the same settings file by file. SampleFit processes one item at a time to keep memory use predictable. BUILT FOR COMPATIBILITY Use clear sampler-ready presets or create a limited custom profile. Before conversion, SampleFit shows the exact output contract and previews deterministic filenames. PRIVATE BY DESIGN All processing happens on your iPhone or iPad. There is no account, upload, cloud service or tracking. Audio never leaves your device. FOCUSED SCOPE SampleFit supports uncompressed PCM WAV and AIFF files. It does not pretend to be an editor, player or universal codec toolbox. The app focuses on one paid outcome: compatible copies ready to move into your sampler workflow. Try three completed batches for free. Unlock unlimited batches with one lifetime purchase. No subscription.
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Verdict
The clearest difference is price: SampleFit at Free against Isotope MIDI Keyboard's $6.99. Isotope MIDI Keyboard's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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
SampleFit is free to download; Isotope MIDI Keyboard costs $6.99 up front. SampleFit sells 1 one-off in-app purchase. Isotope MIDI Keyboard asks for nothing beyond the download.
| Parameter | Isotope MIDI Keyboard | SampleFit |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 4.9 (10 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jaewon Choi | Arthur Borges |
In-app purchases
Isotope MIDI Keyboard
No in-app purchases
SampleFit
- SampleFit Lifetime$7.99
Questions
Is Isotope MIDI Keyboard free?
Is SampleFit free?
Do Isotope MIDI Keyboard or SampleFit have ads?
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