Comparison

Fastsound vs FieldKit Pro

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

Head to head
About

Fastsound

Features
Read full description

Fastsound is applied to connect the hearing aid to the smart phone, and customize the hearing aid via phone. listening mode change, volume adjustment, noise reduction, etc.

About

FieldKit Pro

Capture high-fidelity audio with studio-quality recording, real-time waveform and spectrogram monitoring, and advanced editing tools. Organize and export your recordings with metadata and custom tags.

Highlights
  • Studio-quality 24-bit, 48kHz WAV recording
  • Real-time waveform and spectrogram monitoring
  • Geotagging and custom tagging for organization
  • Non-destructive trimming and editing
  • Silence detection and auto-cropping
  • Export in multiple formats with embedded metadata
  • External microphone support
Features
Read full description

FieldKit is a focused, no-nonsense field recorder built for sound designers, foley artists, ambient musicians, and anyone who needs to capture the world in high fidelity. RECORD IN STUDIO QUALITY Capture 24-bit, 48kHz WAV audio with real-time waveform monitoring. Adjust input gain, apply a low-cut filter to tame wind and handling noise, and monitor your input live — all before you hit record. SEE THE SOUND Watch a real-time spectrogram as you record, so you can spot frequency content the waveform alone won't show you. Perfect for catching hums, resonances, and details you'd otherwise only notice on playback. STAY ORGANIZED Every recording can be automatically geotagged, so you always know where a sound was captured. Tag recordings by type, add timestamped markers while recording or editing, and search your entire library instantly. EDIT WITHOUT LEAVING THE APP Trim recordings non-destructively, drop markers to bookmark key moments, normalize levels, adjust gain with one-tap undo, and automatically detect and strip silence — all without needing a separate editor. EXPORT YOUR WAY Export to WAV, AIFF, M4A, or FLAC with embedded metadata (title, location, tags, markers). Split a recording into separate files at your markers, or batch export your whole library at once. BUILT FOR EXTERNAL MICS FieldKit supports external microphones and includes a screen-flip mode for rigs where your phone ends up mounted upside-down. PRIVACY FIRST All processing happens on your device. FieldKit doesn't collect any data, doesn't use analytics or tracking, and doesn't require an account. Your recordings never leave your phone unless you export them yourself. FieldKit Pro is a one-time purchase — not a subscription — and unlocks: • Unlimited recordings • Real-time spectrogram view • Unlimited tags • Batch export • Export as slices • Normalize & gain tools • Silence detection & auto-crop Everything else is free, forever.

Screenshots

Fastsound3 screens
FieldKit Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Fastsound at none against FieldKit Pro's 1. Fastsound also leads on iOS requirement (13.0 vs 18.0). FieldKit Pro's advantage is update cadence (every 5 weeks vs every 6 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FieldKit Pro sells 1 one-off in-app purchase. Fastsound asks for nothing beyond the download.

UpkeepUpdate frequency

Fastsound ships an update every 6 months, FieldKit Pro every 5 weeks. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Fastsound versus FieldKit Pro: the parameters behind the verdict, then further details
ParameterFastsoundFieldKit Pro
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size19 MB2 MB
Age rating17+4+
Developer杭州发声者声学科技有限公司John Reading

In-app purchases

None

Fastsound

No in-app purchases

1 purchases

FieldKit Pro

One-time1
  • FieldKit Pro Unlock$8.99

Questions

Is Fastsound free?
Fastsound is free to download, with no in-app purchases.
Is FieldKit Pro free?
FieldKit Pro is free to download, with in-app purchases available.
Do Fastsound or FieldKit Pro have ads?
Neither Fastsound nor FieldKit Pro shows ads.
Which is updated more often, Fastsound or FieldKit Pro?
Fastsound ships an update every 6 months, and FieldKit Pro every 5 weeks. Most recently, Fastsound was updated on October 13, 2026 and FieldKit Pro on October 25, 2026.

Other comparisons