Comparison

GCS Model 8 Mobile vs Foundry

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

GCS Model 8 Mobile4 screens
Foundry4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
GCS Model 8 Mobile versus Foundry: the parameters behind the verdict, then further details
ParameterGCS Model 8 MobileFoundry
PriceFreeFree
Rating4.9 (25 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings25 — better3
Update frequencyEvery 5 daysEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better16.4
Further details — not scored
Size135 MB93 MB
Age rating4+4+
Developerwill pattersonQuerci

Customer experience

GCS Model 8 Mobile

All ratings25 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Foundry

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GCS Model 8 Mobile

No in-app purchases

2 purchases

Foundry

Subscriptions2
  • Foundry Pro$8.991 Month
  • Foundry Pro$59.991 Year

Questions

Is GCS Model 8 Mobile free?
GCS Model 8 Mobile is free to download, with no in-app purchases.
Is Foundry free?
Foundry is free to download, with in-app purchases available.
Which has better reviews, GCS Model 8 Mobile or Foundry?
Foundry is rated higher. GCS Model 8 Mobile averages 4.9 out of 5 from 25 ratings, while Foundry averages 5.0 from 3 ratings.
Do GCS Model 8 Mobile or Foundry have ads?
Foundry shows ads; GCS Model 8 Mobile does not.
Which is updated more often, GCS Model 8 Mobile or Foundry?
GCS Model 8 Mobile ships an update every 5 days, and Foundry every 4 days. Most recently, GCS Model 8 Mobile was updated on October 17, 2026 and Foundry on October 8, 2026.

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