RP vs BFM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RP
This app offers dual stereo delay lines for a vast array of audio effects, from simple echoes to complex soundscapes. It features individual bypass, modulation routing, and tempo synchronization options.
- Dual stereo delay lines
- High- and Lowpass filters
- Stereo spread and Looping
- Separate modulation delay
- Tempo sync via AudioUnit Host or Ableton Link
- Delay times from 10ms to 2000ms
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RP-1 - Dual Digital Delay FX Two separate (stereo) delay lines allow for a wide range of effects ranging from basic slapback and ping-ping type echos to complex modulations and soundscapes. * Overview - Digital Stereo Delay with High- and Lowpass filters, Stereo spread and Looping - Separate modulation Delay for Chorus, Vibrato, Flanger, Panning, Phaser & Tremolo effects - Both sections can be bypassed individually - Mod section can be routed pre or post delay - Delay Times from 10ms to 2000ms (or 1/32 to 2bars) - Tempo Sync via AudioUnit Host or Ableton Link - Tap Temp and Manual Tempo - Normal, Dotted and Triplet - Stereo Spread - Simple 1-Button Looping * Connections - AudioUnitV3 Effect - Inter-App Audio Effect - Audiobus (Filter) - Ableton Link - USB Audio Interface - Microphone
BFM
This audio metering plugin offers a large, highly readable interface for monitoring audio levels across various modes like RMS, LUFS, and Peak. It provides multiple visual representations including text, bars, waveforms, VU meters, and spectrum analysis to help users keep their audio signals under control and avoid clipping.
- Large, readable interface
- Multiple metering modes (RMS, LUFS, Peak)
- Visualizations: Text, Bars, Waves, VU, Spectrum
- Adjustable sensitivity and peak hold
- Stereo image and phase response meters
- Frequency spectrum analysis
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BFM or Big F*ing Meters is a macOS, Windows, and soon to be iOS compatible Metering plug-in designed exactly how the name sounds... really f*ing big. With the main goal of readability we wanted to bring a meter that you can see from across the studio and keep your records clip-free. BFM currently offers 6 Modes with RMS, LUFs, Peak, and Peak Hold values, to give you a variety of views to keep your signal under control. The Text, Bars, Waves, VU Meters, Spectrum, & Time let you decide how you want to keep track of your signal with multiple fonts/formats to view them in. Text gives you a quick look at just the values easy to see from across the room. This view offers the most values with RMS, Peak, Peak Hold, and LUFs (Short Term & Momentary with Maximum values and LUFS range) values available. Controllable sensitivity & peak hold time for all pages. Reset Peak Hold with a click off the value. Bar offers a more traditional meter for seeing the range of values showing RMS, Peak, Peak Hold, and LUFS. Correlation & Balance meters included to set your stereo image and phase response. Peak Hold resets on value click. Sensitivity changes on bar click. LUFS readings select on click. Included reference points for -24 (EBU), -16 (Apple Music), & -7 as a suggested maximum for most genres. Wave view gives you a look at your waveform after your channel effects with the ability to quickly mark in dB where you want to see your signals peak. To freeze click the waveform. To reset Peak Hold click the value. VU Meter Designed for a quick look at your overall levels. Featuring controllable Attack, Release, Minimum, and Maximum value control. Left/Right, Mid/Side, PPM, and LUFS options available. Click VU to enter dark mode. Spectrum is a simplified frequency spectrum view with 3 quality modes. Great for getting an overall look at where your frequencies are when mixing or editing. Tap to freeze and inspect. There is also the PEAK value displayed on this page. To reset Peak Hold click the value.
Screenshots
Verdict
The clearest difference is rating: BFM at 4.6 against RP's 3.9. BFM also leads on review sentiment (100% vs 70%) and price ($4.99 vs $5.99). RP's advantage is update cadence (every 2 months vs every 5 months) and ratings volume (16 vs 5). On ads, in-app purchases, 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
RP costs $5.99 and BFM $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BFM holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 16 and 5 respectively. Written reviews point the same way: 70% of RP's written reviews are positive against 100% of BFM's.
RP ships an update every 2 months, BFM every 5 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | RP | BFM |
|---|---|---|
| Price | $5.99 | $4.99 — better |
| Rating | 3.9 (16 ratings) | 4.6 (5 ratings) — better |
| Positive reviews | 70.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 — better | 5 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 13 MB | 158 MB |
| Age rating | 4+ | 9+ |
| Developer | Kai Aras | OSC Audio |
Customer experience
RP
BFM
In-app purchases
RP
No in-app purchases
BFM
No in-app purchases









