VU950 vs Blueprint 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VU950
This app emulates the behavior of early digital samplers, focusing on sound shaping through intentional limitations and artifacts. It offers a full timestretch workflow, reduced bit depth processing, and MIDI control for a hands-on experience. Standalone mode includes multi-track sequencing, effects, and the ability to host other AUv3 apps.
- Classic sampler sound emulation
- Full timestretch workflow
- Reduced bit depth processing
- MIDI-controllable parameters
- Multi-track sequencing
- AUv3 hosting
- Built-in effects
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VU950 is not about realism. It is about behavior. Sound shaped by limits, gain interaction and audible artifacts — the same forces that defined early digital samplers. Draws inspiration from classic midi sequencers combined with samplers. Why it sounds the way it does Instead of emulating a single piece of hardware, VU950 recreates the way early samplers behaved internally. Resolution limits, imperfect filtering and non-linear stages are treated as musical decisions, not technical flaws. What shapes the sound VU950 sample rate: 7.5 kHz to 48 kHz Full timestretch workflow with classic hardware sampler tone Reduced bit depth processing for early-digital density User-adjustable anti-aliasing behavior Stereo signal path with selectable left or right input channel Dedicated input gain stage with drive and circuit bias Multiple filtering stages including bandwidth limitation Built-in low-pass filter for tone shaping Anti-aliasing tuned for musical artifacts, not transparency Non-linear processing across the entire signal path Output gain stage that affects tone and density, not just level MIDI-controllable parameters for hands-on workflow Maximum sample length: 63 seconds Truncate option to trim sample Precise mode for precise trimming on start and end screen One or eight voices of polyphony Precise start and end point control for trimming Chop function with selectable amount of slices And that was just VU950 AUv3 plugin. In Standalone: 8 tracks Support for hosting AUv3 apps to change VU950 sound engine to any sound You like. Build in multi sampler - VU20. Build in midi device - VUMIDI. Mixer with 4 inserts per track. 17 build in effects like filters, eq, compressors Possibility to use 4 AUv3 effects per channel Step Sequencer Piano Roll. Song Mode Live Mode Export wav with stems. Loading samples to build in turntable and record samples to VU950/VU20 or another AUv3 plugin with inputs Classic and modern UI template (Modern is fully customisable) In app purchases drumkits are downloadable after purchase (MPC60 drumkit for free) You can check also my another beatmaking app - VU202 - which is free and it is also a AUv3 instrument so You can use VU202 in VU950!
Blueprint 4
Record voice and instrument ideas with up to three additional tracks. This app offers a simple, offline recording experience with essential tools for capturing demos and first takes. Save and share your creations as WAV files.
- Four-track recording
- Built-in metronome
- Punch-in recording
- WAV file export
- Offline functionality
- No ads or subscriptions
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Great for demos, first takes, and fresh ideas: voice and guitar at the kitchen table, or a band passing one phone around the room. The sound of the machine is built in. Each track has its own set of knobs and there is no undo. - Records one track at a time, from the built-in mic, a headset mic, or a USB audio interface. - Sends any track through a space echo with spring reverb. - Bends pitch and tempo together with a varispeed knob in the master panel. - Has track merging/clearing, punch-in recording, and a metronome. - Your recordings are WAV files saved on your phone. Share the song, or export the whole session. - Works entirely offline and collects nothing. - Pay once. No subscription, no ads, no account. - Works on iPhone and iPad. TIPS - Overdub with wired headphones, so the mic doesn't pick up the other tracks. - Don't use Bluetooth headphones while recording: they add delay, and only play in mono. - Tap record while playing to punch in over a part you want to redo. - Tap the ? at the top left for a guide to the controls. Blueprint is made by one person. If something feels confusing or missing, email max@blueprintdaw.com and I will answer.
Screenshots
Verdict
The clearest difference is review sentiment: Blueprint 4 at 96% against VU950's 60%. Blueprint 4 also leads on in-app purchases (none vs 8) and rating (4.9 vs 4.5). VU950's advantage is update cadence (every 2 days vs every 2 weeks) and price ($1.99 vs $6.99). On ads, monetization model 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
VU950 costs $1.99 and Blueprint 4 $6.99 up front. VU950 sells 8 one-off in-app purchases. Blueprint 4 asks for nothing beyond the download.
Blueprint 4 holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 10 and 41 respectively. Written reviews point the same way: 60% of VU950's written reviews are positive against 96% of Blueprint 4's.
VU950 ships an update every 2 days, Blueprint 4 every 2 weeks. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.
| Parameter | VU950 | Blueprint 4 |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 4.5 (10 ratings) | 4.9 (41 ratings) — better |
| Positive reviews | 60.0% of reviews | 96.0% of reviews — better |
| Number of ratings | 10 | 41 — better |
| Update frequency | Every 2 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Best chart rank | — | #6 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 189 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Dariusz Chynek | MAX B HELGEMO |
Customer experience
VU950
Blueprint 4
In-app purchases
VU950
- EMAX drumkit$0.99
- S2400$0.99
- MPC2000$0.99
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- MPC2000 2$0.99
- MPC3000$0.99
- SP1200$0.99
- S900$0.99
- SP202$0.99
Blueprint 4
No in-app purchases









