GCS Model 8 Mobile vs Foundry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GCS Model 8 Mobile
This pocket-sized music production tool simulates analog tape recording with a realistic physics engine. It offers 8-track recording, built-in instruments, drum machines, and samplers for creative sound design on the go.
- 8-track recording with tape transport controls
- Realistic analog tape physics simulation
- Built-in synthesizers and drum machines
- MPC-style pad sampler
- Support for various tape formats
- Bluetooth MIDI keyboard compatibility
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GCS Model 8 is a free, pocket-sized 8-track tape DAW for iPhone. It has a full blown physics engine which runs in the background and models classic reel-to-reel machines and various formats ranging from LoFi cassette to HiFi 1" tape. The engine is the exact same as the one used in the professional desktop recording version, but still runs very nicely on iPhone. GCS Model 8 for iPhone is completely free, with no in-app purchases, subscriptions, or ads. I really want people to have the engine as a fun tool for mobile settings without any sort of catch. Features: • 8-track recording with a real tape transport (play, record, rewind, fast-forward, punch, scrub) • Analog tape physics: adjustable wow, flutter, stickiness, head gap, hiss, and age • Built-in effects and tape techniques: reverse, SOS, punch, click track, loop • Built-in instruments: A-1 Mono Synth, A-10 Poly Synth, Glissandio (Ondes Martenot style slide synth), Stage Keyboard • Voxtone Drum Machine: synthesized analog drums with a dedicated step-sequencer (MATRIX) and live-trigger (PADS) view, plus two sample-based kits (808, Acetone) • 8-pad MPC-style Pad Sampler: load your own samples or mic them in directly, with pitch, trim, and gate controls • Reels: save, load, and share your sessions • Bluetooth MIDI keyboard support • Importing recordings to hit them to tape • Sound of Sound looping (Fripp style) • Formats: cassette, 1/4", 1/2" and 1" - along with various presets •Most of the features found on the desktop version Reels you create on iPhone move over to GCS Model 8 for iPad and GCS Model 8 for Mac/Windows, which add more tracks, more effects, and full export/mixdown for when you're ready to take a session further.
Foundry
This app is a powerful sampler designed for music producers. It automatically detects tempo and key, allowing for precise slicing and manipulation of audio samples. Perform and record on velocity-sensitive pads, then refine your performance on a timeline for professional results.
- Automatic BPM, key, and downbeat detection
- Beat-grid slicing with draggable markers
- Per-slice pitch, type, and length editing
- Velocity-sensitive pad grid
- Timeline editing with quantization
- On-device processing, no account needed
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Foundry is a sampler for producers who want to get right to chopping. Import a track from Files, and Foundry finds the tempo, key, and downbeat automatically. Slice it on a beat grid with draggable markers, audition each slice, and retune or restretch it to your project tempo, repitch for that classic sampler feel, or stretch to keep the key. Then play. Sixteen velocity-sensitive pads, a count-in, and a loop of any length. Arm, record, and your performance lands on a timeline where you can nudge hits, quantize them to a grid with adjustable strength, and bounce the result to a WAV in Files. CHOP • Automatic BPM, key, and downbeat detection • Beat-grid slicing with draggable markers and a minimap • Loop finder that confirms the grid on tricky tracks • Per-slice pitch, type, and length editing • Repitch or time-stretch slices to follow the project tempo • Project-wide transpose PADS • 4×4 pad grid with a scrolling waveform playhead • Adjustable loop length and count-in • Arm + record transport TIMELINE • Every hit recorded as a dot on its lane • Drag single hits or whole groups • Quantize grid and strength • Bounce takes to WAV, share to anywhere Sessions save automatically and pick up where you left off. Everything runs on-device - no account, no upload, no tracking. Foundry offers features under a pro subscription and will auto-renew at the end of the period, unless auto-renewal is turned off at least 24 hours before the end of the current period. Payments will be chaged to your AppleID. You can manage your subsctiption via the Apple App Store "Subscriptions" panel. You may cancel your subscription any time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is in-app purchases: GCS Model 8 Mobile at none against Foundry's 2. GCS Model 8 Mobile also leads on ads (none vs shown) and ratings volume (25 vs 3). On price, rating, review sentiment and update cadence 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
Both are free to download. Foundry sells 2 in-app purchases, starting at $8.99 per month. GCS Model 8 Mobile asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for GCS Model 8 Mobile against 5.0 for Foundry. That said, the two scores are not equally well evidenced: GCS Model 8 Mobile has 25 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
GCS Model 8 Mobile ships an update every 5 days, Foundry every 4 days. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.
| Parameter | GCS Model 8 Mobile | Foundry |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (25 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 25 — better | 3 |
| Update frequency | Every 5 days | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 135 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | will patterson | Querci |
Customer experience
GCS Model 8 Mobile
Foundry
In-app purchases
GCS Model 8 Mobile
No in-app purchases
Foundry
- Foundry Pro$8.991 Month
- Foundry Pro$59.991 Year









