Ax Collector vs FabFilter Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ax Collector
Catalog your guitar and bass collection with detailed specs, serial numbers, and history. Store photos and sound clips for each instrument. Easily share collection details via email for insurance or sales.
- Instrument gallery creation
- Detailed specification logging
- Photo and sound clip organization
- Email sharing of instrument details
- Full collection export
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Every guitar you own has a story: where it came from, how it's set up, what it sounds like. Ax Collector keeps all of it in one place, instead of spread across a spreadsheet, a notes app and a camera roll. THE WHOLE RECORD, ONE GUITAR AT A TIME - Make, model, year, where it was made and the serial number. - Body and fretboard woods, pickups, tuning, string brand and gauge. - Setup notes and ownership notes, so you remember what was done to it and where it came from. - Photos from your camera or your library. Pinch in on the details. - Sound clips recorded right in the app. Capture how it sounds today, fresh strings and all. GUITARS AND BASSES, YOUR WAY - Search, filter and sort the whole collection. - Keep the ones you've sold on record, marked as sold. - Works on iPhone and iPad. SHARE A SPEC SHEET - Turn one guitar or the whole collection into a PDF spec sheet, ready for Mail, Messages, Files or Print. - Choose what goes in: the main photo, details, specs, setup and ownership notes. - Handy when you're insuring a guitar, selling one, or just showing off. YOURS, AND PRIVATE - No account to make. - Your collection syncs between your iPhone and iPad through your own iCloud. - No ads and no tracking. The app sends anonymous usage statistics only, never linked to you. PAY ONCE One purchase. No subscription, no in-app purchases. UPGRADING FROM 2.x? Ax Collector 3.0 is a complete rebuild. It brings your 2.x collection across on first launch and keeps your old files as a backup until you choose to delete them. Privacy policy: https://www.prestosaurusrex.com/axcollector/privacy
FabFilter Pro
This professional audio plug-in offers flexible gate and expander functionality for mixing and mastering. It features multiple algorithms, precise metering, and customizable side chain options for real-time audio filtering. Requires a compatible host app to function as a plug-in.
- Multiple expander/gate algorithms
- Program-dependent attack/release
- Precise metering and level display
- Low CPU usage
- Adjustable range, hold, and knee
- External side chain and MIDI triggering
- Factory presets
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FabFilter Pro-G is a high quality gate/expander plug-in for mixing and mastering purposes, with flexible side chain options and great interface design. The Pro-G app filters the microphone input and plays it back in real-time. To use Pro-G as a plug-in, you need an AUv3-compatible host app like Auria, AUM or Cubasis. Pro-G will appear in the list of Audio Unit extensions for effect plug-ins in the host app. Key features: - Five perfectly fine-tuned expander/gate algorithms: Classic, Clean, Vocal, Guitar and an upward expansion style - Beautifully program-dependent attack and release curves - Precise and helpful metering, including a real-time level display - Low CPU usage - Adjustable range, hold time and knee settings - Optional look-ahead time up to 10 ms - Expert mode that offers highly customizable side chain and level options, conveniently hidden in normal mode - Mono, stereo or mid/side processing - Up to four times linear-phase oversampling - Zero-latency operation mode - External side chain option - MIDI triggering: open the gate/expander with your MIDI keyboard - Separate dry/wet level settings - Easy to set up for common gating/expansion situations with the included factory presets - Undo/redo and A/B comparison "FabFilter's slick, innovative interfaces make FabFilter Pro-G a joy to use. For pros and beginners alike, Pro-G is a superb tool!" — Music Tech Magazine
Screenshots
Verdict
The clearest difference is price: Ax Collector at $7.99 against FabFilter Pro's $29.99. FabFilter Pro's advantage is rating (5.0 vs 4.7) and review sentiment (100% vs 83%). On ratings volume, update cadence, ads and in-app purchases 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
Ax Collector costs $7.99 and FabFilter Pro $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.
FabFilter Pro holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 6 and 16 respectively. Written reviews point the same way: 83% of Ax Collector's written reviews are positive against 100% of FabFilter Pro's.
Ax Collector ships an update every 8 months, FabFilter Pro every 9 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Ax Collector | FabFilter Pro |
|---|---|---|
| Price | $7.99 — better | $29.99 |
| Rating | 4.7 (6 ratings) | 5.0 (16 ratings) — better |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 | 16 — better |
| Update frequency | Every 8 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 26.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Prestosaurus Rex LLC | FabFilter |
Customer experience
Ax Collector
FabFilter Pro
In-app purchases
Ax Collector
No in-app purchases
FabFilter Pro
No in-app purchases





