Melthaven vs TEMPO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Melthaven
This app provides a note-triggered phase shifter for guitarists, bassists, and synthesizers. It offers organic, rhythmic movement that syncs to your playing, with analog-modeled filters for diverse sonic textures. Enhance loops or create experimental sounds with its input-dependent modulation.
- Note-triggered phase shifting
- Analog-modeled OTA filters
- Responds to guitar and bass transients
- Enhances pre-recorded loops
- Input-dependent synth modulation
- Low-latency engine
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Melthaven is a note-triggered phase shifter built to give guitarists and bassists organic, rhythmic movement that syncs to their playing, rather than a fixed LFO. It's also highly suited for a number of synth basses and sounds with sharp attacks and fast decays. Its analog-modeled OTA filters provide deep resonance and character, ranging from wah-like effects to complex, shifting formant textures or even experimental tones, like bubbling or hard, slappy effects. For bright, harmonically dense signals – such as saturated or overdriven tones and synthetic sounds – the effect range also includes growls and glistening sweeps. FOCUSED ON BASS & GUITARS The effect was specially developed to respond to the frequency response and transient peaks of electric guitars and basses. Every pluck, pop, or pick attack re-triggers the phase sweep, effectively turning your rhythmic timing into the "engine" of the effect. USING LOOPS? BREAK THEM OPEN Add various resonant effects like growls, or vintage bark / quacks "after the fact." This unlocks a level of control usually lost the moment a loop is bounced. Instead of being stuck with locked-in sound design, you can now reshape the envelope of any pre-recorded sample, breathing new life into your loop library. FOR SYNTHS & SOUND DESIGN: INPUT DEPENDENT Soft signals like pads or heavy/layered effects can produce wild, unpredictable responses. While such use is outside the plugin's core design, the smoothing feature can tame these re-triggers, yielding a flow that can feel organic and physical in its instability when operating beyond the plugin’s transient-focused comfort zone. MOVING BEYOND ENVELOPE FILTERS The plugin uses low-latency note detection paired with its own envelope generator and LFO, allowing sculpting and even reshaping each note’s modulation profile or filter envelope. It even detects notes that hide under a consistent signal amplitude when using a traditional envelope follower. BASE FEATURES: - Built around a versatile preset from the Pro version to suit a wide variety of applications - Controls: feedback & panoramic position, attack & hold timings, LFO Rate - Smoothing: from envelope shaping to creating a weighted, fluid response, giving note sequences a sense of physical momentum - Low-latency engine: preserves natural playing feel when used as a real-time effect PRO FEATURES - Requires Pro Edition Upgrade (In‑App Purchase): - Additional envelope parameters, several envelope flavors with pre-mapped control subsets - Pro presets encompassing both strong and milder effects, including the quintessential rubber bass - Enhanced stereo phaser modes & internal stereo re-imaging modulator (for formant-like effects and more) - Vintage-style phaser feedback that can optionally build or ramp with each note onset (non-rampable in the base version) - Instant visual feedback via an audio scope with dual-channel envelopes overlaid on the input waveform TECHNICAL NOTES: - Place before creative effects (unless experimenting). It can be used before or after harmonic processing (saturation, amp sims) depending on your preference - Response may vary on sustained notes with shifting harmonic content - Not optimized for upright bass due to its reliance on sharp signal transients - Note detection involves statistical signal processing and confidence intervals. Weak transients and phantom notes could lead to a loss of output determinism, i.e. sensitivity to changes in certain project settings - While it offers multiple layers of real-time control, Melthaven operates primarily as an automatic effect; for full manual filter manipulation, please refer to RealPhase, a separate app PLEASE NOTE: • The Pro Edition Upgrade is offered as a one‑time In‑App Purchase • An AUv3-compatible host is required to use this app • Suported sampling rates: 44.1, 48, 96 kHz
TEMPO
Create beats and build songs with this pocket-sized sampler groovebox and mini DAW. It allows you to play, sample, and sequence music, then arrange your patterns into full songs.
- Sampler groovebox and mini DAW
- 12 voices with modeled drums and samples
- 64-step patterns with advanced shaping
- Standalone Song Mode for arrangement
- Audio track recording and import
- AUv3 instrument compatibility
- Stereo WAV and stem export
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Make a beat. Build a song. TEMPO-1 is a sampler groovebox and a mini DAW in your pocket. Play, sample and sequence on iPhone and iPad, then turn your patterns into an arrangement with the new standalone Song Mode. BUILD THE GROOVE Play 12 voices with modeled drums and samples. Create patterns up to 64 steps and shape each hit with velocity, probability, microtiming, ratchets, conditions and pitch. Record pads or MIDI, add swing, and bring movement to your patterns with effects and automation. TURN PATTERNS INTO SONGS Bring saved Patterns straight into a timeline with up to eight Pattern/MIDI, Audio and Instrument tracks. Build sections, add markers and tempo changes, and use FILL to repeat whole clips into empty gaps. Keep reusable ideas in the Pattern Library and saved clip banks. RECORD, LAYER AND PLAY Record an Audio track from your microphone or a compatible connected interface. Trim takes, adjust gain and fades, and reuse phrases. Import compatible audio through the bottom Bank pattern chooser bar, then place it on a Song Audio track. Add separately installed compatible AUv3 instruments. SHAPE YOUR SOUND Record, import, edit and resample WAVs for the pads. Balance Song tracks with level, pan, mute and solo, then shape the mix with EQ, effects and track automation. TAKE THE IDEA FURTHER Export a stereo Song WAV or a mix with Song-track stems. Choose the entire Song, a loop or a selected time span, or share a Song project package. Pattern workflows retain loop WAV export, MIDI export and live WAV capture. CONNECT YOUR SETUP Use MIDI learn and external MIDI output, or run TEMPO-1's Pattern groovebox as an AUv3 in a compatible host. Gillespie Audio Built by a musician, for musicians.
Screenshots
Verdict
The clearest difference is rating: Melthaven at 5.0 against TEMPO's 4.3. Melthaven also leads on price ($2.99 vs $9.99). TEMPO's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 6 weeks). On ratings volume, 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
Melthaven costs $2.99 and TEMPO $9.99 up front. Melthaven sells 1 one-off in-app purchase. TEMPO asks for nothing beyond the download.
Melthaven holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 3 respectively.
Melthaven ships an update every 6 weeks, TEMPO every 4 days. The most recent releases landed on October 22, 2026 and October 31, 2026 respectively.
| Parameter | Melthaven | TEMPO |
|---|---|---|
| Price | $2.99 — better | $9.99 |
| Rating | 5.0 (4 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 4 — better | 3 |
| Update frequency | Every 6 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 23 MB | 354 MB |
| Age rating | 4+ | 4+ |
| Developer | quantovox | Richard Gillespie |
Customer experience
Melthaven
TEMPO
In-app purchases
Melthaven
- Melthaven Pro$4.99
TEMPO
No in-app purchases









