SPL vs Reelgrain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SPL
This professional-grade digital sound level meter measures decibels with advanced modes and filters meeting ANSI Type 1 standards. It allows storing, exporting, and calibrating measurements, and can be used with external calibrated microphones for precise results.
- Professional-grade digital sound level meter
- ANSI/IEC Type 1 standards compliant filters and modes
- Store, recall, and export GPS/time-stamped results
- Supports external calibrated microphones
- Adjustable calibration for accuracy
- Internal mic compensation filter
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SPL is a professional-grade digital sound level meter (decibel meter) for your iPad, iPhone or iPod touch. It includes all of the modes, filters, and features that you would expect from a professional ANSI or IEC Sound Level Meter. All filters and averaging modes meet or exceed the criteria for ANSI Type 1 standards or better. SPL is created from the same team who brought you the Audio Toolbox and ATB Plus. Store Results -- Uses the same powerful Save / Recall engine as our premier app, AudioTools. Allows storing GPS and time-stamped results, and exporting them to your computer. You can also use SPL with our calibrated iPhone measurement mic, iTestMic, or iAudioInterface. The screen flips if you turn the phone upside down, so that you can point the built-in iPhone mic directly at the sound source. *** Modes: Slow, Fast, Impulse, Peak, and Leq. *** Filters: A and C weighting, and 10 octave band filters. *** Includes a resettable Max field to track the highest reading. *** Includes a reference field (except in Leq mode) so that you can set a reference level and do seat-to-seat comparisons. The SPL meter can be fully calibrated. It comes preset with the calibration for a typical iPad, iPhone, and iPod Touch. Most iOS devices will be within a few dB of this reading. If you have access, even temporarily, to a calibrated sound level meter, just use the calibration field on the settings scree to match the meter, and you will be accurately calibrated. Also, see our other professional-grade audio apps: AudioTools, our premier suite of professional-caliber audio and acoustics test apps, Speaker Pop, to test speaker polarity, and RTA, a real-time analyzer for the iPhone. And, we have a group of calibrated, accurate measurement microphones, including iTestMic,iTestMic2, and iAudioInterface2, that allows full professional results for Type 1 or Type 2 measurements. This will allow measuring a range from approximately 30 dB SPL to 130 dB SPL. Each mic will include a calibration factor that you will enter into the SPL app for calibrated measurements. This mic will also work with Speaker Pop, our speaker polarity tester, FFT, RTA, ETC, and other acoustical measurement apps in our AudioTools app that is available now. Also, see our iAudioInterface2 system, which supports any pro test and measurement mic. Now includes an iPhone internal mic compensation filter, to cancel out the low-frequency roll-off present in the iPhone and other iOS devices. See our other audio apps, including AudioTools.
Reelgrain
Transform your audio with analog tape effects. Add warmth, texture, and instability to your sound. Export high-quality audio or transcribe it into MIDI notes for further manipulation.
- Analog tape sound simulation
- Saturation, wow, flutter, hiss, crackle
- Audio-to-MIDI transcription
- MIDI manipulation
- AUv3 plugins
- Stereo image fine-tuning
- Preset saving
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Give your sound a past. Reelmoire is a hands-on tape sound studio for iPhone, iPad, and Mac. Import an audio file, choose from six machine profiles—studio reels, cassette decks, and compact recorders—and dial in anything from gentle warmth to worn, unstable texture. SHAPE THE SOUND • Add saturation, wow and flutter, head bump, hiss, dropouts, and crackle. • Play and loop your track, then compare the original with the processed sound. • Fine-tune the stereo image and save your favorite settings as presets. TAKE IT FURTHER • Export finished audio as WAV, M4A, AIFF, or CAF. • Transcribe audio into MIDI notes, including chords and overlapping parts. • Import MIDI to shape note timing, pitch, and velocity, with original/processed preview. MAKE MUSIC IN YOUR HOST Use three AUv3 plug-ins in compatible music apps: a tape audio effect, a MIDI processor, and a polyphonic instrument. Reelmoire's tape character and tactile controls follow you into your session. Audio-to-MIDI results depend on the source and may need editing. MIDI does not retain the original timbre or tape effects.
Screenshots
Verdict
The clearest difference is rating: Reelgrain at 5.0 against SPL's 3.0. Reelgrain also leads on price ($2.99 vs $8.99). SPL's advantage is ratings volume (4 vs 1) and iOS requirement (15.0 vs 17.0). 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
SPL costs $8.99 and Reelgrain $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Reelgrain holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
| Parameter | SPL | Reelgrain |
|---|---|---|
| Price | $8.99 | $2.99 — better |
| Rating | 3.0 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 67.6% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 6 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 29 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Smith | 宁 徐 |
Customer experience
SPL
Reelgrain
In-app purchases
SPL
No in-app purchases
Reelgrain
No in-app purchases









